| Names | |
|---|---|
| Preferred IUPAC name | Bis(1,3-benzothiazol-2-yl) disulfide |
| Other names | MBTS MBT disulfide Vulcanization accelerator MBTS Benzothiazyl disulfide Bis(benzothiazol-2-yl) disulfide |
| Pronunciation | /daɪˌbɛnzoʊˈθaɪəˌzoʊl ˈdaɪsʌlfaɪd/ |
| Identifiers | |
| CAS Number | 120-78-5 |
| Beilstein Reference | 1208539 |
| ChEBI | CHEBI:53043 |
| ChEMBL | CHEMBL1900621 |
| ChemSpider | 20359630 |
| DrugBank | DB11338 |
| ECHA InfoCard | 100.013.645 |
| EC Number | 215-548-8 |
| Gmelin Reference | 57087 |
| KEGG | C14107 |
| MeSH | D002932 |
| PubChem CID | 8492 |
| RTECS number | WN9625000 |
| UNII | 117671JF8X |
| UN number | UN3077 |
| Properties | |
| Chemical formula | C14H8N2S4 |
| Molar mass | 332.5 g/mol |
| Appearance | Light yellow powder |
| Odor | Odorless |
| Density | 1.45 g/cm³ |
| Solubility in water | Insoluble |
| log P | 2.9 |
| Vapor pressure | 1 mmHg (at 20°C) |
| Acidity (pKa) | 4.5 |
| Basicity (pKb) | 12.34 |
| Magnetic susceptibility (χ) | -74.0 × 10⁻⁶ cm³/mol |
| Refractive index (nD) | 1.765 |
| Viscosity | 400 mPa·s (at 60°C) |
| Dipole moment | 2.9 D |
| Thermochemistry | |
| Std molar entropy (S⦵298) | 512.3 J·mol⁻¹·K⁻¹ |
| Std enthalpy of formation (ΔfH⦵298) | −87.7 kJ·mol⁻¹ |
| Std enthalpy of combustion (ΔcH⦵298) | -1106 kJ/mol |
| Pharmacology | |
| ATC code | D21AF07 |
| Hazards | |
| Main hazards | May cause an allergic skin reaction. Causes serious eye irritation. Toxic to aquatic life with long lasting effects. |
| GHS labelling | GHS02, GHS07, GHS08 |
| Pictograms | GHS07, GHS09 |
| Signal word | Warning |
| Hazard statements | H302, H317, H319, H400 |
| Precautionary statements | P261, P264, P270, P271, P272, P302+P352, P321, P363, P405, P501 |
| NFPA 704 (fire diamond) | 2-1-0 |
| Flash point | > 260°C |
| Autoignition temperature | 540°C |
| Lethal dose or concentration | LD50 (oral, rat): >8,000 mg/kg |
| LD50 (median dose) | LD50 (oral, rat): 5,000 mg/kg |
| PEL (Permissible) | PEL: 0.1 mg/m³ |
| REL (Recommended) | 0.3 mg/m³ |
| IDLH (Immediate danger) | Not listed |
| Related compounds | |
| Related compounds | 2-Mercaptobenzothiazole Benzothiazole Diphenylguanidine N-Cyclohexyl-2-benzothiazolesulfenamide |
| Category | Details and Industrial Commentary |
|---|---|
| Product Name & IUPAC Name |
Product Name: Dibenzothiazole Disulfide IUPAC Name: Benzothiazol-2-yl disulfanylbenzothiazole In factory practice, this compound is recognized primarily in industrial and technical grade forms. Naming conventions may reflect slight differences due to regional standards or customer usage norms. |
| Chemical Formula |
C14H8N2S4 This empirical formula remains consistent across all pure grades but manufacturing impurities can influence practical downstream specification. Routine QC checks verify molecular integrity before batch release. |
| Synonyms & Trade Names |
Synonyms: MBTS, Vulcanization Accelerator MBTS, Benzothiazole disulfide Common Trade Names: Mercaptobenzothiazole disulfide; sometimes abbreviated as "MBTS" in technical procurement. Synonym use in actual procurement/lot traceability should match contract documentation to avoid ambiguity between grades or country-of-origin requirements. |
| HS Code & Customs Classification |
Example Classification: HS Code 2934.20 This code covers heterocyclic compounds containing sulfur. Sub-classification varies depending on importing country's customs interpretation and application end-use. For export compliance and customs clearance, harmonization with local regulatory interpretation is essential, especially for cross-border shipments. Discrepancies in precise sub-code allocation may arise and affect documentation, so technical input is often needed during pre-shipment review. |
In industrial settings, Dibenzothiazole Disulfide is most often isolated as a pale yellow to grayish powder or granule. The color and form vary by process control, impurity profile, and specific particle size distribution required by downstream compounding or rubber processing operations. Odor is typically faintly aromatic and may intensify if impurities or degradation occurs. Melting point for the main grade falls within a narrow range but can shift depending on trace contamination or particle treatment approach. Boiling and flash point data serve more as precautionary guides, since the product’s application never involves vapor-phase processing. Bulk density ranges according to granulation protocol and batch drying performance, affecting packaging, transport, and silo selection in the factory.
Chemical stability hinges on environmental factors such as moisture uptake and exposure to acidic or basic media. Dibenzothiazole Disulfide retains its performance window in well-sealed, dry storage, but significant humidity or acidic dusts accelerate partial hydrolysis or sulfide cleavage. Shelf life decreases rapidly in the presence of reducing agents common in some compounding lines. Application-specific impurity buildup during storage can promote breakdown if not proactively screened.
This compound resists dissolution in water, reflecting its targeted application as a rubber accelerator. Compatibility with organic solvents varies; practical preparation of dispersions for rubber latex or solvent-based systems relies on matching carrier selection, agitation rate, and surfactant use with grade-specific particle size and surface area. Overly aggressive dispersion routines can generate fine dust or static, affecting material handling and compound uniformity in plant-scale blenders.
Production scales drive grade designation, with main grades differentiated by minimum active content, permissible ash levels, moisture content, and screening residue fraction. Detailed specifications are formalized for each product line and confirmed at batch release based on internal criteria as well as customer application demands. Special compounding grades may impose stricter impurity limits.
Sulfur and aromatic byproduct levels arise during synthesis and may vary by kettle type, raw material purity, and cycle timing. Industrial settings enforce limits for thiazole derivatives, free sulfur, and low molecular weight aromatic contaminants, with acceptance criteria validated through QC sampling routines. Surface active impurities impact downstream processing, especially in high-shear mixers or latex compounding.
Quality assessment depends on established wet chemistry and chromatographic methods, selected for reproducibility in day-to-day process monitoring. Differential scanning calorimetry for melting range, titrimetric moisture determination, and HPLC/GC for trace impurities represent standard practice. Exact analytical protocol depends on customer contract and export region regulatory expectations. The final release standard is subject to internal quality control criteria and contract specifications.
Main precursors include 2-mercaptobenzothiazole, oxidizing agents, and process-grade solvents. Supplier qualification prioritizes batch-to-batch consistency in sulfur source and absence of extraneous aromatic residues. Pre-treatment steps often filter out insoluble debris and minimize inorganic carryover.
Manufacturing typically follows oxidative coupling of 2-mercaptobenzothiazole with controlled addition of oxidant under managed temperature and agitation. Catalyst or promoter choice reflects plant scale, compliance needs, and downstream filtration compatibility. Selection of solvent, oxidation agent, and feed rate governs both yield and manageable impurity spectrum.
Synthesis quality depends on closed-loop reaction control, aggressive in-process monitoring of temperature ramps, and pH stability for impurity suppression. Downstream, multiple wash cycles and filtration steps remove unreacted starting material and water-soluble side-products. Evaporation, drying, and particle treatment settings require adjustment per grade and customer application, especially for low-dust or high-flowability versions.
Release hinges on consistency in active content, moisture, flowability, and dust index. Ongoing sampling before packaging checks for trace organics, surface sulfide, and color drift. Product destined for sensitive formulations, such as pharmaceutical or food-contact rubber, triggers additional contamination screening and trace metal assessment as agreed with the customer.
Function in rubber processing centers on accelerated vulcanization, where Dibenzothiazole Disulfide fragments under curing conditions to release active thiol and radical intermediates. The thermal and chemical stability of the molecule determines its suitability for controlled cure rates. Application-specific compounding may prompt further reaction with zinc oxide or stearic acid in custom accelerator blends.
Effective vulcanization demands careful tuning of temperature profile and sulfur donor compatibility. Optimal performance appears in established rubber stock formulations, where the precise catalyst or co-activator system ensures full consumption and high crosslink density. Solvent choice and temperature during modification steps reflect desired particle wetting and impurity minimization.
Reaction routes enable subsequent synthesis of monothiol analogues or tailored disulfide intermediates, which serve as starting points for specialized elastomer formulations. Selection logic for downstream conversion rests on both cost constraints and finished goods performance—specific application requirements often impose additional purity or reactivity controls upstream.
Extended shelf life aligns with storage in cool, dry, sealed environments, with temperature and humidity monitored by automated warehouse protocols. Bulk lots kept in direct sunlight risk surface oxidation and agglomerate development, disrupting handling ease. High-purity grades particularly benefit from inert gas overlay or low-oxygen packaging to forestall oxidative decomposition.
The product does not react with standard steel, fiber, or polymer drums, although bulk vessel selection must factor in dusting hazard and possible electrostatic buildup. Long-hold packaging should use inner linings or vapor barriers to suppress moisture ingression, especially in high-humidity shipping lanes. Recycled plastic occasionally sheds static-accumulating debris, which complicates high-speed unloading and blending.
Signs of advancing degradation include pronounced color change to brownish hues, shift in bulk particle texture, and rise in odor intensity. Agglomeration and dust fraction increase reflect both packaging performance and any incipient chemical breakdown. Monitoring protocols draw on monthly sampling and fast-screen analytical checks; shipment for performance-sensitive applications may trigger batch recertification at defined intervals.
Regulatory classification trends towards skin and eye irritation risk, with inhalation hazard in high-dust environments. Safety data sheets include skin sensitization warnings, and dust mask/PPE protocols are required at discharge and compound set-up. Bulk receiving lanes and handling bays rely on mechanical dust extraction and operator exposure monitoring during shift runs.
Acute exposure effects align with the broader thiazole disulfide chemical class, primarily dermal and ocular irritation. Long-term handling experience in production lines stresses the need for skin protection, direct-contact avoidance, and continuous workplace air monitoring. Preparation of dispersions or dry blends requires specialized containment for dust control. Operational limits for airborne particulates get set according to plant location and local health regulation; ongoing review and adjustment respond to any observed increase in operator sensitivity or air-borne residue measured in quarterly audits.
Production volume for dibenzothiazole disulfide at plant scale depends on installed reactor capacity, annual turnaround planning, and actual market demand pull. Output adjusts between technical grades and higher-purity grades based on confirmed customer schedules. Production can face constraints from upstream 2-mercaptobenzothiazole (MBT) supply fluctuations or utilities interruptions. Short-term increases require careful scheduling to avoid downstream bottlenecks.
Lead time for standard industrial-grade lots ties closely to inventory levels and real-time operation load of the plant. Minimum order quantities are primarily set by batch synthesis size and efficiency of downstream handling, rather than sales policy. Fine-tuned grades or specialty packaging request extra lead time due to off-standard QC and re-packing procedures.
Standard packaging includes multi-ply kraft paper bags with PE liners, but drum and custom one-tonne sacks are also available for high-volume contract customers. Packaging integrity must align with intended storage duration and transport method due to sensitivity to moisture uptake and cross-contamination, particularly in grades for high-performance tire formulations.
Ocean freight for global export shifts container availability and landed cost calculations, especially ahead of shipping peaks. Shipping terms can be CFR, CIF, or FOB main ports in China or India, subject to forwarder slot booking. Most buyers in Europe and the US negotiate based on LC at sight or net payment terms for contracted volumes; Indian and SE Asian buyers have more variation, sometimes relying on DP or TT with credit references.
The largest cost share derives from the price of MBT, which itself is tied to the spot cost of aniline, sulfur, and sodium hypochlorite. Periodically, volatility in crude derivatives and power costs in main producing regions (China, India) significantly impacts upstream MBT pricing. Production grade, extent of in-process purification, and compliance-driven sampling frequency directly affect conversion and downtime costs per ton.
Rapid swings in sulfur or aniline costs, especially when power rationing or environmental shut-ins hit upstream chemical facilities in China, have downstream effects, driving cost volatility for MBT and subsequently dibenzothiazole disulfide. Currency exchange movements affect real export prices for global customers, especially in times of RMB or INR instability.
Industrial buyers see significant per-kilo cost uplift for higher-purity, low-impurity grades required in sensitive rubber compounding processes. Custom packaging for cleaner-room or export-to-EU applications, as well as additional REACH, TSCA, or other regional certifications, drive further price differentiation. The premium reflects additional batch documentation, analytical verification, and compliance assurance rather than physical product variation alone.
Plants in China and India dominate world output for rubber accelerators, supplying both local tire majors and multinationals. US and EU demand remains tied to compounding for passenger and commercial tire sectors. Japanese consumption skews to high-specification compounds with enhanced QC traceability. Southeast Asia imports remain steady, reflecting expanding local auto component manufacturing.
In the US and EU, contract terms and close audit trails shape supply agreements more than spot price chasing. Japanese compounders focus on purity and traceability. In India, capacity additions have tempered import demand growth, while China exports are seasonally disrupted by government-led environmental controls and port congestion.
With demand anchored by automotive share and infrastructure rebound, price baselines are unlikely to retreat to early-2020s levels. Regulatory tightening on industrial emissions and energy, especially in large Chinese production zones, raises steady-state running costs. Market expects margin pressure for bulk grades, but premium for certified, high-purity lots will remain, especially under continued regulatory scrutiny on rubber compound contaminants.
Analysis combines internal historical pricing, buyer tender records, upstream raw material index tracking, reviews of regional export data, and customer feedback from annual procurement negotiations.
Short-term disruptions in 2023 from power shortages and raw material price jumps among Chinese producers rippled through global supply chains. Pushback from buyers on lead time and supply risk has led to reinforcement of longer-term contracts and vendor-managed inventory programs in key markets.
EU and US regulators have increased scrutiny on trace-level contaminants and environmental persistence of rubber accelerators. New reporting requirements in the EU for SVHC candidates and revised TSCA registration instructions in the US have led to additional analytical control steps at manufacturing sites, raising chain-of-custody documentation costs for compliant lots.
Increased QA/QC in pre-shipment verification, introduction of third-party trace analysis, and periodic manufacturing audits have become standard for lots targeting critical tire, medical, or export applications. Continuous process improvement, source diversification for key raw materials, and investment in logistical support help buffer some of the upstream volatility effects that characterized recent market periods.
Dibenzothiazole Disulfide, known in the industry as MBTS, operates primarily as a rubber accelerator across various sectors. Tire manufacturing absorbs the bulk of our production due to the specific kinetics required in large-scale vulcanization. Technical rubber goods—hoses, belts, gaskets—rely on its processing window to control cure speed and physical properties. Non-tire industrial rubber, footwear, and selected adhesive and sealant formulations also regularly adopt MBTS for its predictable scorch and cure characteristics.
| Primary Application | Preferred MBTS Grade | Key Parameters |
|---|---|---|
| Tire Manufacturing | Low Impurity, Granular or Powder | Impurity Profile, Particle Size Distribution, Dispersibility, Dust Control Additives |
| Technical Rubber Goods | Standard Technical Grade, Powder | Free Flow, Particle Size Cut, Ash Level |
| Footwear & Consumer Goods | Purified Grade (if color is critical) | Color Value, Purity, Odor Profile |
| Adhesive/Sealant Use | High Purity, Fine Powder | Sieved Fraction, Ultra-low Impurity |
Production lines with high throughput and automation generally require tight particle size controls to limit dust and maximize flow. Dust suppression additives or controlled granulation grades are common in tire and technical rubber sectors. Applications sensitive to discoloration or odor—such as white or light-colored footwear—call for refined, filtered grades with additional purification steps. For cured rubber where physical property consistency matters, batch impurity stability and controlled end-use rheology are prioritized.
Start with a clear assessment of where MBTS will function in your process. Tire, technical rubber, and precision adhesive applications set different demands regarding cure kinetics, color, flow, and contamination risk. Establish the downstream compatibility requirements—mixer configuration, process sequencing, and blend partners.
Evaluate geographic regulatory constraints early. Some regions impose limits on total impurities, specific nitrosamine precursors, or heavy metal traces. The technical department maintains updated dossiers mapping grade profiles against these external standards, and we recommend formal review with customer QA/RA teams to address compliance in high-profile or export markets.
Purity requirements typically follow application criticality. Tire compounds with dark color tolerance may operate with standard industrial grades, provided ash and trace organic levels fall within specified limits. For white goods or specialty uses, color stability demands further chemical purification with additional quality control checkpoints—process controls adjust for raw material variability and batch-to-batch consistency. All MBTS grades go through release assays for purity; detailed specifications depend on the selected grade and application sector.
Large-scale tire manufacturing secures economy at bulk volumes where packaging, transport mode, and batch scale impact landed cost. Lower-volume or specialty applications, especially those requiring high purity or fine sieved fractions, incur higher per-unit cost due to added processing and material selection. Technical sales can advise on balancing grade selection with overall economic goals based on forecast order profiles.
Process and formulation validation require functional confirmation on actual equipment. Submit requests specifying all known downstream process variables—application, standard mixing temperature range, processing order, and any unique batch or formulating challenges. Plant technicians and QA coordinate sample dispatch with full analytical records for critical properties, so customers can compare in-lab or in-line performance against internal standards before scaling up.
Our operations maintain a documented quality management system, which forms the baseline for process control, batch traceability, and deviation management in the manufacture of Dibenzothiazole Disulfide. Production follows process maps aligned with ISO-certified practices, where applicable, with deviation reporting and corrective action measures embedded in each facility’s management system.
Consistency between batches is driven by in-line process analytics and release testing, with critical control points set by historical variance analysis and risk assessment. Certificate of Analysis records reflect in-process controls, and deviations are documented alongside corrective measures. Audits and compliance checks occur on a routine schedule, triggered by both internal risk matrices and third-party audits where contractually required.
Certification coverage varies by grade and destination market. Common requests include compliance documentation related to REACH registration, TSCA listing, and regionally specific regulatory attestations. Fulfilling such certification requests draws on a combination of laboratory batch records, raw material origin tracing, and change management records that are maintained at the site level. Where product-specific certificates, such as purity confirmations or contaminant exclusions, are required, these are tied directly to the analytical data for the relevant production lot and detailed within supporting reporting packages.
Each delivery batch is supported by a set of documentation, encompassing Certificate of Analysis, production batch release record, and shipping lot traceability data. For traceability, sample retention and batch retention documents can be made available to accredited third parties for verification or incident investigation as needed. All customer-specific reporting requirements undergo initial technical review to ensure feasibility and data integrity prior to acceptance. For specialized downstream regulatory submissions, detailed impurity profiles and stability statements may be provided when dictated by the receiving industry segment.
Production scheduling allocates baseline volumes for standard grades, with capacity expansions reserved for seasonal or project-based adjustments. Advance planning with customers enables stepwise scale-up or reserve capacity allocation if an application calls for sustained or peak delivery periods. Our cooperative models range from annual commitment-backed supply plans to spot purchase arrangements, offering volume allocation flexibility while protecting core operational stability.
Stable supply draws from dedicated process lines, maintained by raw material supplier qualification and back-integration wherever feasible. Each production campaign is reviewed against historical yield and off-spec profiles to identify capacity bottlenecks, with preventive maintenance and forward purchase planning forming the backbone of reliability. Offtake agreements and rolling forecasts help align continuous output with market requirement, minimizing the risk of allocation shortfalls.
Sample provision adheres to a formal request protocol to ensure suitability and regulatory alignment for the receiving application. Upon inquiry, technical staff work through the end use intent, selecting the closest matching grade and packing specification. Documentation accompanying samples includes analytical verification drawn directly from the batch and a summary of grade specifications relevant to the declared application. Any deviations from standard grades or customer-driven requirements prompt a technical clarification step prior to dispatch.
Cooperation structures may adjust to customer project phases, ranging from R&D support batches, pilot-scale confirmation, through to long-term supply with performance and quality auditing rights. Framework agreements can capture project-driven flexibility, such as variable volume call-offs, variable delivery intervals, or split-parcel shipments. Where applicable, technical teams engage in root cause investigations for customer nonconformities, and adapt process parameters or logistical support based on findings. The mode of cooperation always reflects both the customer’s operational timeline and our core production safeguarding—keeping schedules, volumes, and quality commitments balanced throughout the supply chain cycle.
Process intensification continues to shape how technical teams approach batch-to-batch MBTS consistency. Direct improvements in throughput rely on optimizing temperature control, agitation efficiency, and raw material selection. Many laboratories scrutinize the sulfur donor profile and impurity carryover from precursor benzothiazole derivatives. Internal R&D often prioritizes minimizing residual free sulfur and controlling oil content or ash, since these impact downstream accelerator performance and shelf stability. Surface area, particle morphology, and dust suppression rank high on current agendas. These properties affect both processability in mixing lines and safety in handling, especially when addressing inhalation risk or dust explosions.
Demand for MBTS in low-nitrosamine elastomer compounds is driving interest in both modified grades and tighter impurity management. OEM tire manufacturers and rubber technical goods producers request custom grades adapted to their compound's aging resistance and cure kinetics. Certain advanced cable and seal formulations have moved to MBTS due to regulatory tightening around nitrosamine-generation. Continuous research explores blending MBTS with other accelerators for more precise vulcanization time and property control—especially for high-performance automotive, conveyor, and mining applications.
Consistent control of oligomeric byproducts and colored impurities stands as a main technical challenge in MBTS manufacture. Transition metal residues from catalysts often require customized chelation or filtration—especially for medical or food-contact rubber. Reducing batch-to-batch variation in activity and solubility demands sharp control at multiple process stages, starting from precursor synthesis through filtration and drying. Recycling of aqueous and organic waste streams has become a technical focus, as firms adopt more circular production logic. The greatest technical progress has emerged from inline monitoring and real-time adjustment to process variables, which safeguard active content uniformity and reactivity profile.
Rubber accelerator demand, particularly in emerging economies, continues to grow with automotive and infrastructure investment. MBTS consumption tracks closely with tire, footwear, conveyor belt, and cable production. Industrial buyers in Europe and North America increasingly shift to grades that satisfy upcoming REACH, TSCA, and stricter national green chemistry regulations. Regulatory focus on nitrosamine precursors is influencing long-term purchasing requirements and new product adoption. Tightening supply of suitable upstream raw materials can periodically impact pricing and availability. Grade segmentation—for both high-purity and specialty-dosed MBTS—will become more pronounced.
Automated quality control, advanced filtration, and continuous processing offer practical ways to improve MBTS purity and lower operating costs. Projects now focus on reducing energy consumption through process redesign and heat recovery strategies. Surface-treated MBTS grades receive more attention, especially for direct dusting applications and automated dosing environments. Increasingly, MBTS manufacturers integrate closed-cycle water management and off-gas scrubbing to minimize environmental load during production. Continuous improvement in yield and selectivity remains a strong focus, with technical teams aiming for higher active content and lower byproduct formation.
MBTS production adopts cleaner and more responsible chemistry practices. Internal initiatives target solvent reduction, alternate sulfurization agents with milder hazard profiles, and resource recovery from process streams. Environmental monitoring and waste minimization programs are now standard, especially for plants handling large MBTS throughput. Grades designed for customers with green certification targets require closer tracking of carbon footprint and detailed product stewardship documentation. Technical strategies move toward bio-based or lower-toxicity raw material sourcing, reflecting both regulatory and customer sustainability agendas. Any proposed process adjustment—such as catalyst modification or solvent swaps—must pass rigorous hazard and lifecycle evaluation before plant-scale adoption.
Onboarding support for new MBTS users centers on predictive behavior in their final compound recipes. Technical engineers assist with troubleshooting integration into masterbatches, advise on optimal addition points, and provide insight on likely process-compatibility factors. High loadings, high-shear mixing, or moisture-sensitive storage environments can trigger support requests. In recent years, technical teams increasingly share analysis on the relationship between MBTS particle size, oil content, and scorch safety or blooming in downstream products.
Our laboratory collaborates closely with customers developing new compound formulas or retuning legacy ones for tightened cure profiles. Joint trials focus on speed, reversion resistance, and final mechanical property targets. Support includes tailored analytical reports on accelerator activity, compatibility with co-agents, and troubleshooting premature vulcanization or incomplete crosslinking. Customers using automated feeder systems or micro-dosing equipment can request comparative testing on grade flowability and dust management. We also provide recommendations on storage, handling, and environmental controls based on real-world shipping and site feedback.
The technical and quality teams ensure documented traceability from lot release through shipment completion. In case of quality nonconformance or handling incidents, teams coordinate root-cause investigation and implement corrective actions. MBTS release testing draws on process- and customer-specific standards, prioritizing properties including active content, impurity profile, particle size, and dispersibility criteria, and delivers results within agreed response times. Regular feedback loops with key accounts help refine specification targets and shape ongoing process improvements. On-site training and technical education are available for customer engineering or R&D teams needing focused accelerator handling, safety, or usage guidance.
Rubber additives need consistent quality and reliable supply. In our plant, we have dedicated lines for Dibenzothiazole Disulfide (MBTS), producing it at scale to meet both local and global demand. Our synthesis process avoids variable feedstocks to ensure batch-to-batch consistency. High-purity raw materials and digital process controls stabilize product output and minimize impurities. Each production batch undergoes in-house analytical checks, including active ingredient content, ash, and loss on heating. This approach gives downstream processors a reliable base for their compounding lines.
MBTS plays a key role in the vulcanization of natural and synthetic rubber. It is widely used in tires, hoses, conveyor belts, and technical rubber parts. Factories rely on our product for its predictable scorch delay and vulcanization curve. Automotive, mining, and construction sectors run lines with minimal downtime, as our product keeps mixing and curing processes stable over long production runs.
Consistency is the foundation of our supply to OEMs and industrial processors. Our QMS ties laboratory testing to process control, reducing lot-to-lot variation. Independent audits confirm compliance with international quality systems. Retain samples from every batch are kept in climate-controlled storage, ready for re-check if a technical question comes from a downstream team.
We design packaging formats for both major converters and intermediate processors. Options include multi-layer paper bags with PE liners and flexible intermediate bulk containers (FIBCs). Our warehouse operations coordinate large-volume shipments on a fixed cycle to keep regional distribution hubs stocked. Our direct distribution model and volume flexibility enable steady supply during project expansions or seasonal demand peaks, without last-minute disruptions.
Application engineers are involved throughout the customer relationship. Our team routinely assists partners with process compatibility reviews, troubleshooting of compounding lines, and raw material change management. We regularly engage with user technical groups to gather feedback and support product trials, particularly for new or sensitive rubber formulations. Knowledge transfers cover analytical methods, mixing window determination, and production audits. This technical service reduces unplanned downtime for our partners.
Industrial buyers measure value by production continuity, cost predictability, and regulatory compliance. Our vertical integration, from raw input to final packaging, limits external fluctuations and supports price stability. Procurement teams gain direct access to quality records and shipment tracking logs. Distributors reduce risk of disputes with robust supporting documentation and rapid batch traceability. OEMs secure supply assurance, especially in expanding sectors such as green tires and specialty industrial rubber goods, by specifying a direct-manufactured material.
We focus resources on scalable manufacturing, rigorous chemistry control, and technical problem-solving. Rubber product plants worldwide rely on consistent MBTS performance, on-time delivery, and our technical expertise. This commitment keeps production lines running efficiently and supports the industry’s long-term growth.
Our core business relies heavily on the production of high-quality Dibenzothiazole Disulfide—commonly referred to as MBTS or “M” by technical specialists in the rubber sector. MBTS plays a direct role in modern rubber compounding, especially as a primary accelerator in the vulcanization of both natural and synthetic rubbers. In our own process, MBTS integrates seamlessly into the mixing systems, supporting the production of automotive tires, conveyor belts, industrial hoses, footwear, and various molded and extruded rubber goods.
MBTS extends the scorch time, making it easier to handle rubber batches without the risk of premature crosslinking during mixing, calendering, or extrusion. The moderate curing speed offered by MBTS compared with faster accelerators, such as the sulfenamides, allows better process control for compounders who require long processing windows or complex mold shapes. It also delivers consistent mechanical properties in the cured rubber, including resilience and aging resistance.
Our technical team selects MBTS for its stable disulfide structure and compatibility with commonly used sulfur curing systems. The molecular structure, featuring a dibenzothiazole core connected by a sulfur bridge, delivers predictability and reliability batch after batch. MBTS acts as a medium-speed accelerator in sulfur-based cures, which matters in formulations where balance between cure speed and scorch safety is crucial. We see strong requests for MBTS in compounds where product life, dimensional stability, and weathering resistance stand as key requirements.
As a manufacturer, consistent purity and controlled particle size have a direct impact on dispersion in the mixing process. We keep our MBTS free from insoluble matter and optimize it for compatibility with carbon black, mineral fillers, process oils, and plasticizers—all of which are common in rubber mixes. This supports the performance our customers demand, especially where the final product must pass rigorous abrasion, tensile, and tear resistance specifications.
Our production line engineers work closely with plant specialists to guarantee that MBTS is free-flowing and easy to handle in automated dosing units. We have seen reductions in dust exposure and improved batch consistency through continuous process improvements and the use of advanced granulation techniques. MBTS is less irritating compared to primary thiazoles, supporting safer workplace conditions in mixing rooms while reducing spoilage loss due to accidental scorching.
We provide MBTS in pellet and powder forms, with packaging tailored for both high-volume tire manufacturers and niche specialty rubber plants. Quality consistency comes from our strict raw material controls, continuous monitoring during synthesis, and end-of-line testing. Long shelf life and stability support both immediate use and inventory storage without worry of caking or degradation.
Rubber industry regulations grow stricter each year, shaping how we formulate and deliver MBTS. Our research team tracks developments around polycyclic aromatic hydrocarbons, nitrosamine formation, and hazardous substance restrictions. MBTS achieves accelerated curing without generating the levels of nitrosamines found with certain secondary accelerators. Product stewardship and technical support remain part of our daily operations—from handling recommendations to supporting sustainable application targets for tire and industrial rubber manufacturers.
Through our close cooperation with compounders and brand owners, we refine our MBTS to answer new industrial needs. As tire rolling resistance standards become more stringent and end-users push for better environmental profiles, our production and R&D teams are ready to implement the latest testing and process controls. MBTS continues to play a central role as a versatile accelerator that helps the global rubber industry meet modern challenges efficiently and reliably.
Producing Dibenzothiazole Disulfide at scale calls for a balance between operational efficiency and logistics. In real-world factory production, shipping small amounts does not match the resources poured into batch processing, drying, and safety controls. That’s why our minimum order quantity starts at 500 kilograms, packed as full pallet loads. This threshold allows uninterrupted workflow through our reactors, lets us maintain consistent product quality, and helps avoid waste tied to frequent start-stop cycles.
Many of our long-term customers use this chemical as a vulcanization accelerator in rubber compounding, so the 500 kg minimum ensures resin tank yields stay in step with downstream mixer and extruder throughput. Shipments below this margin rarely align with freight efficiencies, especially considering the safe packaging and regulatory compliance required.
Packaging directly at the production line, we have refined three main solutions for handling and transport. For bulk users, we provide Dibenzothiazole Disulfide in 25 kg heavy-duty woven bags lined with polyethylene for dust control and moisture resistance. These bags carry clear, permanent labeling, batch numbers, and barcodes to simplify warehouse tracking and traceability.
For factory environments with stricter containment policies or higher automation, we supply 25 kg fiber drums. Each drum has a food-grade polyethylene interior liner with sealed lids and steel clamps. This setup protects active ingredients during longer hauls, prevents cross-contamination in multi-product sites, and stacks well in automated warehouses. Both bags and drums load onto wooden pallets secured with stretch wrap and corner guards for secure shipping.
For select high-volume contracts, we run a bulk FIBC (flexible intermediate bulk container) system. Each FIBC holds up to 500 kg of product, fit for storage and unloading in compounding halls or masterbatch facilities.
Every production shift factors in global transport rules. Dibenzothiazole Disulfide’s dust potential and toxicity require packaging compatible with both local and international guidelines for solid chemical cargo. Our technical staff keeps documentation ready on liner materials, pallet treatments, and closure types. Clients receive support for large-volume containerization, safety labeling, and customs paperwork.
Quality locks in from the point of bagging. Our QC personnel pull samples from each batch at the bagging station, not just from lab-scale containers, to verify consistency through the entire run. This reduces breakdowns in supply for compounders counting on predictable scorch time and curing profiles.
Market dynamics shift quickly, so we offer further options for contract clients—such as labeling with customer logos, anti-static bagging for clean room deliveries, and just-in-time release from secure warehouse hubs. Our technical team provides detailed specifications, shelf-life guidance, and can tailor packaging to plant-specific handling machinery.
In our business, predictable operations drive trust. Robust minimum order quantities and standardized packaging keep lines running on both sides—ours and our customers’. Our direct control over formulation, packaging, and logistics means every shipment reflects our commitment to reliable delivery and production integrity.
Manufacturing Dibenzothiazole Disulfide—commonly known as MBTS—over decades teaches a lot about what it takes to move specialty chemicals safely and legally. Once MBTS leaves our facilities, everything from its chemical compatibility to regulatory paperwork sits under our responsibility as a direct producer. This knowledge comes from years handling compliance audits, safety training, and product stewardship, not from secondary sources or hearsay.
MBTS is classified as a hazardous material due to its potential risk to human health and the environment. Our team keeps up-to-date with international frameworks. The United Nations Recommendations on the Transport of Dangerous Goods assigns MBTS the proper shipping name “Environmentally hazardous substance, solid, n.o.s.” under UN3077. As a direct manufacturer, we print accurate labels and maintain up-to-date Safety Data Sheets with each shipment, so there’s no room for confusion about the actual contents. For sea freight, IMDG Code rules apply. Airfreight draws regulation from IATA DGR, and for ground transport, national ADR rules in the EU and DOT standards in the United States govern labelling, packing, and segregation rules.
Throughout shipment, the right packaging prevents chemical exposure or spills. Our product leaves the plant in well-sealed multi-layer bags or drums designed for chemical compatibility and containment strength. Each package receives hazard markings and UN labeling that match globally recognized standards—never omitted or minimized to save cost or effort.
We ship only in packaging types that pass drop and stacking tests, and our warehouses keep MBTS isolated from oxidizers and food products. All our logistics staff and transport partners undergo specialized training in hazardous goods handling. This is not a checkbox exercise. Our employees go through annual refreshers to keep safety procedures sharp. Strict documentation accompanies every shipment—transport documents, certificates of analysis, and clear hazard identification—meeting the demands of every regulatory audit or roadside inspection.
Environmentally responsible handling extends beyond compliance. We routinely review spill containment technologies and emergency response systems to prevent MBTS incidents along the route. Our trucks and containers carry spill kits and the drivers understand protocols for every stage of the journey, from loading docks to final unloading. We work closely with local authorities and registered waste contractors for any accidental release, ensuring rapid mitigation and reporting.
REACH registration applies to all MBTS volumes sold into the European Union, and our production batches adhere to limits on SVHCs and restricted substances. We provide full traceability for each lot number and maintain a transparent audit trail. GHS-compliant labeling is standard. We participate in Voluntary Responsible Care® programs and regularly invite regulatory site inspections to confirm our processes match current statutes.
In our experience, regulations do not stay static. We operate a dedicated compliance office to track rule changes and update processes immediately. This way, our customers know that our MBTS always leaves the plant with up-to-date certification, accurate documentation, and packaging that meets every applicable regulation—no shortcuts, no exceptions.
The obligation to ship hazardous chemicals like Dibenzothiazole Disulfide does not end at our factory gates. As a manufacturer, we commit to onward stewardship. We support our customers with training materials, updated safety datasheets, and full compliance support, because the chain of responsibility stretches from our reactors to the end application. Safe transit means correct classification, tested packaging, and regulatory certifications in hand—every shipment, every destination, every time.
For product inquiries, sample requests, quotations or after-sales support, please feel free to contact me directly via sales9@bouling-chem.com, +8615651039172 or WhatsApp: +8615651039172
