| Names | |
|---|---|
| Preferred IUPAC name | Dichlorodifluoromethane |
| Other names | R-12 Freon-12 CFC-12 Genetron 12 FC 12 F12 Arcton 6 |
| Pronunciation | /daɪˌklɔːroʊˌdaɪˌflʊərəˈmiːˌθeɪn/ |
| Identifiers | |
| CAS Number | 75-71-8 |
| Beilstein Reference | 1200073 |
| ChEBI | CHEBI:3907 |
| ChEMBL | CHEMBL50486 |
| ChemSpider | 5666 |
| DrugBank | DB01357 |
| ECHA InfoCard | 13c869e4-e75d-4ded-8d57-828d6c8f8787 |
| EC Number | 200-937-8 |
| Gmelin Reference | 64229 |
| KEGG | C01439 |
| MeSH | D002953 |
| PubChem CID | 6296 |
| RTECS number | PA6300000 |
| UNII | BBR1M222W7 |
| UN number | UN1028 |
| Properties | |
| Chemical formula | CCl2F2 |
| Molar mass | 120.91 g/mol |
| Appearance | Colorless gas |
| Odor | Odorless |
| Density | 1.31 g/cm³ |
| Solubility in water | 20 mg/L (at 25 °C) |
| log P | 1.89 |
| Vapor pressure | 5910 mmHg (at 21.1°C) |
| Acidity (pKa) | ~15 |
| Magnetic susceptibility (χ) | -47.4×10⁻⁶ cm³/mol |
| Refractive index (nD) | 1.0011 |
| Viscosity | 0.221 cP (25°C) |
| Dipole moment | 0.51 D |
| Thermochemistry | |
| Std molar entropy (S⦵298) | 339.6 J·mol⁻¹·K⁻¹ |
| Std enthalpy of formation (ΔfH⦵298) | -334.9 kJ/mol |
| Std enthalpy of combustion (ΔcH⦵298) | -814.8 kJ·mol⁻¹ |
| Pharmacology | |
| ATC code | R01AA03 |
| Hazards | |
| GHS labelling | GHS02, GHS04, Danger, H220, H280 |
| Pictograms | GHS04, GHS07 |
| Signal word | Warning |
| Hazard statements | H220, H280 |
| Precautionary statements | P210, P261, P271, P304+P340, P403 |
| NFPA 704 (fire diamond) | NFPA 704: "Health: 1, Flammability: 0, Instability: 1, Special: |
| Autoignition temperature | 648°C |
| Explosive limits | Explosive limits: 7.5–15.5% |
| Lethal dose or concentration | Inhalation LC50 Rat: 1500 g/m³ 2h |
| LD50 (median dose) | 500000 mg/kg (rat, oral) |
| NIOSH | SA8180000 |
| PEL (Permissible) | 1000 ppm (TWA) |
| REL (Recommended) | 0.5 ppm (3.5 mg/m³) |
| IDLH (Immediate danger) | 1000 ppm |
| Related compounds | |
| Related compounds | Chlorodifluoromethane (CFC-22) Trichlorofluoromethane (CFC-11) 1,1,2-Trichlorotrifluoroethane (CFC-113) 1,2-Dichlorotetrafluoroethane (CFC-114) Chloropentafluoroethane (CFC-115) |
| Category | Details |
|---|---|
| Product Name | Dichlorodifluoromethane |
| IUPAC Name | 1,1,2,2-Tetrafluoroethane |
| Chemical Formula | CF2Cl2 |
| Synonyms & Trade Names | CFC-12, R-12, Freon-12 |
| CAS Number | 75-71-8 |
| HS Code & Customs Classification | 2903.39 |
Dichlorodifluoromethane, best known as CFC-12 or R-12, stands as a legacy product in the refrigerant and aerosol sectors. The chemical structure, CF2Cl2, comes from an established synthesis route employing chlorinated methanes and fluorinating agents. Raw material purity, particularly for methane and chlorine derivatives, directly determines yield and product consistency at plant scale. In a typical batch or continuous operation, the choice between different grades of initial chlorinated feed has a tangible effect on impurity profiles, corrosion management, and waste treatment needs.
Product specifications reflect these realities. Typical property values, including moisture content and stabilizing agent residues, only retain meaning in the context of grade and customer requirement. Refrigerant grades prioritize stringent controls for acidity, moisture, and non-condensable gases; these require specialized in-line drying, filtration, and gas chromatographic release checks, tailored to the customer’s compressor system tolerances. Industrial application grades for aerosol propellants or process agents may relax specific impurity limits, but maintain batch uniformity through internal process control criteria rather than external certification.
The release for shipment hinges on repeated, grade-specific analysis: every production run faces review against internal standards developed from both customer feedback and regulatory expectations. International movement of dichlorodifluoromethane now faces strong regulatory scrutiny. Customs authorities reference HS Code 2903.39 during import and export checks. Some regions enforce total bans or require evidence of use in critical legacy infrastructure, which forces us to adapt storage protocols to regulatory and end-user application needs.
From a processing angle, keeping chlorinated and fluorinated raw material inventories segregated, as well as controlling purity through distillation and molecular sieve drying, make the difference between batches that meet compressor manufacturer requirements and those that do not. Minor variations in upstream raw materials or downstream blending steps manifest as product that can require additional purification cycles or blending with prior off-specification lots. Each impurity, whether originating from side reactions, catalyst residues, or container leachables, needs tracked and quantified against the intended application and regulatory context.
Only a production framework rooted in ongoing quality data review and feedback loop management can support consistent supply to sectors still legally able to use CFC-12 in an environment of phase-downs and emerging alternatives.
Industrial production yields CFC-12 as a colorless, non-flammable gas at ambient conditions. Under pressure or low temperature, the material condenses to a clear, mobile liquid. Odor remains faintly sweet, with no perceptible impurities in properly manufactured product. Typical melting and boiling points differ by batch purity, but production consistently targets values compliant with international refrigerant-grade standards. Density readings may vary by grade; process control and product testing focus on minimizing deviation to meet customer system performance expectations.
CFC-12 maintains stability under manufacturing and standard handling conditions. Any significant deviation in reactivity or unexpected byproduct formation traces back to raw material or catalyst contamination. Chemical behavior shifts strongly in presence of strong alkali metals, sources of active hydrogen, or open flames—those are flagged in risk assessments during process design and plant operations.
Solubility in water and most common solvents stays extremely low, determining handling, washing, and waste management protocols. For customer solution prep, solubility figures guide compatibility checks with lubricants and system oils used in refrigeration or aerosol formulation.
| Parameter | Technical Grade | Refrigerant/Aerosol Grade | Test Method (Typical) |
|---|---|---|---|
| Purity (CFC-12 content) | Grade-dependent | Grade-dependent | Chromatography (GC/TCD/FID) |
| Moisture | As required by user/system | Tightest for refrigeration | Coulometric Karl-Fischer |
| Acidity (as HCl) | Process-dependent | Minimized for system protection | Titration |
| Non-volatile residue | Controlled as per application | Lowest for refrigeration | Gravimetric |
| Other halocarbons | Profile defines grade | Strictest for precision uses | GC or Mass Spec |
Final release standard depends on both internal QC and customer-specific quality requirements. Certain markets or regulatory environments require third-party verification and batch certification prior to shipment.
Manufacturing starts from selected chlorinated and fluorinated feedstocks—typically carbon tetrachloride and hydrogen fluoride. Supplier qualification focuses on material purity, impurity profiles (particularly heavy metal and water content), and supply chain reliability. Any deviation in raw input reflects directly in impurity levels in final output, tracked by both incoming QC and in-process analytics.
The classic route involves reacting carbon tetrachloride with hydrogen fluoride in the presence of an antimony pentachloride catalyst. Process selection reflects plant scale, energy balance, and environmental controls. Reactor metallurgy is critical due to system corrosion risk posed by HF and evolved byproducts, dictating use of corrosion-resistant alloys and lining treatments for continuous operation.
Unit operations demand precise temperature and pressure management; even minor excursions result in off-grade product or hazardous byproduct formation. Core purification relies on low-temperature distillation columns paired with filtration to manage trace moisture and acid halide carryover. Real-time process analytics oversee key impurity drags, and allow immediate adjustment or batch diversion if deviation rises.
QC protocols implement chain-of-custody from raw materials through packaged product. Retained sample protocols apply for every lot. Analytical fingerprinting (including GC profiles and water content) benchmark every batch against historical performance and standard QC criteria. Only product meeting both statutory standards and customer acceptance is released for sale or export.
CFC-12 resists most chemical transformations under neutral conditions. Under strong thermal or catalytic activation, it decomposes, releasing chlorine and fluorine-containing fragments. Process engineers treat all potential release scenarios as critical control points, especially during plant shutdown, maintenance, or waste treatment.
Engineered conversion to derivatives, such as halogen-terminated intermediates, requires high energy input or specialty catalysts. Any such route must account for rigorous process safety measures to contain highly toxic intermediates. Only facilities with advanced off-gas handling systems and emergency shutdown mechanisms address these conversion processes with confidence.
Bulk storage employs pressurized vessels built from select carbon steel or lined alloys. Temperature and pressure traceability ensures cylinders are protected from extremes that risk overpressure or thermal degradation. Humidity control revolves around leak integrity and valve maintenance.
Most industrial steel and select aluminum alloy tanks are suitable, provided elastomeric seals withstand trace acid formation and halogen attack. Handling protocols restrict use of copper, magnesium, and alloys prone to halide-induced stress corrosion cracking.
Shelf life extends years if containers remain sealed and free from temperature or UV extremes. Degradation generally manifests as elevated acid gas content, noted during periodic headspace analysis and by change in internal pressure profile over time.
GHS-compliant labeling is mandatory. CFC-12 is classified as a simple asphyxiant and suspect organ toxicant by chronic exposure. Stringent workplace monitoring and OEL adherence form part of mandatory plant policy. Inhalation or skin contact risks escalate sharply with pressurized liquid or gas release—standard PPE and engineering controls manage this risk.
Published data indicate low acute toxicity by dermal and inhalative routes at production levels. Chronic exposure assessment draws from industry epidemiological records. Final policy hinges on regulatory exposure limits in force at plant location and the specifics of local process conditions.
Plant operators rely on fixed and portable gas detection, robust ventilation, and rapid-response spill kits. Cylinder filling and transfer stations call for regular process audits and strictly enforced permit-to-work systems.
Manufacturing output for Dichlorodifluoromethane (CFC-12) directly reflects regulatory limitations and raw material sourcing reliability. Production typically depends on both the installed reactor volume and the consistency of feedstock quality. Producers must allocate capacity not only based on market demand but also on phased-out policies in several regions. Production lines remain calibrated to minimize by-product formation, requiring careful balance between yield rates and environmental compliance. Availability for international shipment is affected by quota systems or phaseout schedules enforced by Montreal Protocol guidelines in major markets.
Lead time varies with plant location, maintenance cycle scheduling, holiday interruptions, and the flow of chlorine and HF feedstock supply. For bulk orders, lead time adjustments may result from pre-shipment purity testing and export approval procedures. Large-volume contracts generally require negotiation of MOQ, with standard batch sizes varying according to filling line configuration and bulk logistics. MOQ aligns with packaging unit and shipping container optimization to reduce handling losses.
CFC-12 is filled exclusively into pressure-rated, corrosion-resistant cylinders and ISO tank containers. Packaging configuration depends on end-user system requirements; factors such as fill weight, cylinder surface treatment, and valve type are confirmed at order placement. Certification labels and UN packaging requirements conform to hazardous material protocols, with customization subject to project scope or export destination.
Commercial shipment requires adherence to international dangerous goods transport conventions. Shippers work with established carriers qualified for refrigerant gases, ensuring compliance with maritime, rail, and road regulations in both origin and destination countries. Payment terms require formal credit and compliance review, with export transactions generally conducted under agreed irrevocable L/C, T/T prepayment, or other secure settlement methods. Delays originate from inspection delays, documentation accuracy issues, or last-minute buyer changes due to regulatory checks.
Raw material outlay consists primarily of anhydrous hydrogen fluoride, chlorine, and trichloromethane, along with catalysts and utilities. Feedstock price swings respond to both regional production swings and supply disruptions in underlying commodity chemicals, often transmitting volatility to final product cost. Utilities such as process cooling water, power, and treatment chemicals figure significantly in variable cost review, especially for older or multi-product facilities.
Market instability often traces back to fluctuations in fluorspar mining output, seasonal plant turnarounds, and geopolitical impacts on chlorine supply chains. Regulatory events, including carbon emission penalties and blanket bans, unpredictably shape total manufacturing cost. Raw material contracts tied to spot indices inject volatility, especially in years when macroeconomic or environmental disruptions disturb chemical sector fundamentals.
Grade, purity, and certification level drive differential price realization. Customers specifying electronic or pharmaceutical grade receive material processed under enhanced purification and analytical scrutiny, reflecting higher process control costs. Lower-grade variants for industrial refrigeration may accept residual impurity ranges, reducing purification expenditure but limiting market scope. Certified packaging and documented traceability add further tiering to ex-factory pricing, as does third-party batch certification or region-specific hazard labeling.
CFC-12’s market position exists almost exclusively in replacement consumption or legacy system servicing, following Montreal Protocol enforcement. Legal production has shifted heavily toward regions operating under essential-use exemptions, primarily concentrated in Asia. Most demand is now tied to servicing existing refrigeration assets rather than new equipment.
The US and EU markets have largely ceased active consumption, limiting transactions to reclamation or exempted lab use. Japan maintains minimal trade for controlled end-use, with increasing transition to substitutes. India and China comprise the largest concentrations of allowed production under specific project-based exemptions, accounting for most new material entering permitted global circuits.
Demand is projected to contract as legacy uses phase out and substitute refrigerants gain further regulatory and commercial traction. Controlled legal supply will restrict market liquidity, creating potential for periodic price jumps as permitted stocks tighten. Price will respond to both policy updates and residual demand spikes linked to asset renewal or emergency system repair. Significant new investment in CFC-12 manufacturing lines is not anticipated; pricing may reflect scarcity premiums.
Data interpretation relies on published regulatory filings, export/import database tracking, and industry stakeholder communications. Official reports from UN Environment Programme, chemical association bulletins, and customs release data provide main reference points for volume and transaction prices. Industrial benchmarking draws from process evaluation and peer plant disclosure.
Accelerated transition schemes for high-GWP refrigerants drive further contraction in authorized CFC-12 applications. Service sector retrofits and asset retirements in mature economies gradually erode recurring demand, intensifying inventory management pressure on authorized producers.
Compliance regimes enforce stricter tracking and mandatory reporting of CFC-12 movement. National environmental agencies have escalated audit frequency and documentation requirements at ports and distribution centers, resulting in tighter shipment validation and spot checks. Refined definitions of “essential use” and shorter exemption windows limit forward contract planning and may increase shipment seasonality.
Manufacturers recalibrate feedstock procurement and batch scheduling to match permitted volumes and reduce off-spec inventory risk. Investments in refining and product reclamation extend plant utilization in restricted regulatory climate. Supplier strategy centers on forward-integrating analytical control and documenting batch genealogy, thereby enabling rapid defect trace-back or certification upgrades as customer and regulator requirements shift.
Dichlorodifluoromethane, known as CFC-12, plays a role in several sectors. Common fields include refrigeration, air conditioning, aerosol propellants, and chemical process intermediates. Usage has evolved, especially under shifting regulatory environments, with older installations sometimes still dependent on established processes. New alternatives and regional policies affect both demand and grade selection for each application.
| Industry | Usual Grade Required | Considerations |
|---|---|---|
| Refrigeration & Air Conditioning | Refrigerant Grade | Purity, moisture, and non-condensable gas content impact system performance and lifetime. System-specific requests for oil compatibility or charge size may affect required specifications. Legacy equipment typically references pre-regulation standards. |
| Aerosol Propellants | Propellant Grade (Higher Purity) | Organic impurities and moisture levels affect stability. Packaging system vulnerabilities must be considered during selection, especially for sensitive products (medical, cosmetic). |
| Chemical Synthesis/Intermediate | Technical Grade | Impurity profile and minimum practical purity driven by downstream process tolerance. Trace catalyst residues or byproducts can impact yields in derivative synthesis. |
Clearly describe the end use. CFC-12 for stationary chillers or mobile vehicle air conditioning will push toward different purity and impurity profiles than a requirement for laboratory-scale synthesis or non-pressurized use in a chemical plant.
Review which standards or restrictions apply in your jurisdiction. For example, legacy installations in maintenance-specific applications may use recycled material under a local permit, while production for export or specialty medical applications triggers updated compliance documentation. Environmental controls and phaseout lists can directly affect usage options and audit protocols.
Quality expectations vary sharply. In refrigeration, moisture and acid residues dominate technical risk, leading to tight in-house control of drying and purification trains. For propellant and synthesis use, organic impurity signature and heavy metals may also matter. Manufacturing typically monitors batch results against customer-defined acceptance criteria upon each lot release.
Production runs shift between small-batch, high-purity selections and larger, economical lots with broader specifications. Raw material cost management and internal reprocessing options are considered when planning supply to balance availability, regulatory quotas, and pricing pressure. End-use certification requirements sometimes limit substitution or grade-mixing.
Manufacturers usually support sample trials to confirm system compatibility and compliance with intended application standards. Installation- or process-specific testing helps verify purity profile, gas chromatography signatures, or component inertness against reference equipment.
Raw feedstock choice shapes impurity risks and cost structures. Fluorination route selection considers operational safety, impurity burden, and waste management. Upstream materials can introduce halogenated impurities or reactive byproducts; control points are placed at feed staging and reactor feed dosing.
Fractional distillation, chemical scrubbing, and deep drying protocols remove trace contaminants. Moisture removal efficiency links directly to operational dryer capacity and cycle times. Inline monitoring handles real-time detection of non-condensables and acid traces to avoid downstream equipment failures.
Quality control frameworks emphasize repeatability between lots, especially for regulated or high-risk installations. Final release draws on complete impurity scan profiles and customized customer specification sheets. Discrepancies prompt root-cause analysis often tied to batch raw material variability or purification equipment performance.
Grade-sensitive products require inert or moisture-controlled storage vessels to maintain purity. Refrigerant grade may call for sealed steel cylinders under low fume permeation, while technical grade destined for in-plant use sometimes permits bulk drum storage. Risk of cross-contamination with recycled product is managed by segregated storage, cleaning protocols, and tank movement tracking.
Our production and quality control operate under established quality management frameworks. Facility-level system certification ensures each batch undergoes traceable process and document review, anchored in repeatable operational discipline. Operators, engineers, and laboratory staff work with procedures that reflect process risk assessment, traceability needs for regulated substances, and internal nonconformity analysis. Annual internal audits and scheduled third-party reviews maintain system robustness and address shift, seasonal, or regulatory parameter changes directly relevant to bulk fluorocarbon manufacturing.
Dichlorodifluoromethane (commonly referenced as CFC-12 in technical and regulatory contexts) falls under several product-phaseouts depending on region. Our supply serves only qualified channels and applications permitted under transitional agreements or laboratory usages. Certification scope, including conformance to purity requirements or ban exemptions, varies by region, end use, and grade (refrigerant use, analytical reagent, etc.). Compliance statements are batch-specific, with supporting laboratory results and chain-of-custody logs attached. For custom grades, certification documentation details analytical protocols used, whether via GC-ECD, GC-FID, or other validated methods, and describes deviation handling or retest results if relevant.
Each lot released to market carries a full dossier: certificate of analysis, statement of compliance, and transportation safety sheet. Laboratories document analytical data for identity, purity by relevant regional protocol, and volatile impurity profiles, including halogenated side products, water, and acid numbers if customer specification requires. Historical trend reports on complaint or incident data are available to major account partners by direct request, linked to continuous improvement traceability. Copies of testing and inspection protocols, calibration schedules for detection equipment, and sample retention policy summaries are included in our technical information package for downstream users seeking verification.
Our operational model for CFC-12 hinges on segregated production modules and longstanding supply chain agreements for precursor chemicals. Manufacturing capacity allocation relies on forecasted demand in regulated sectors only—no output is assigned for phased-out applications. Business cooperation flexes by established track record, risk category, and region-specific allowance. High-volume customers can request scheduled delivery windows or staggered call-off contracts, mitigating volatility in regionally capped supply streams.
Process modules dedicated to CFC-12 run batch or continuous depending on customer volume requirements. Facility layout allows raw material input revalidation, targeted at reducing cross-grade contamination—particularly where production lines alternate between CFC-12 and related fluorinated gases. Core modules feature automated monitoring at pressure, reaction, and condensation stages; deviation alerts prompt immediate intervention. This discipline supports clients who require predictable lead time and documented lot uniformity for inventory planning and application-sensitive downstream formulations.
Sample requests require end-use statement and regulatory clearance review prior to release. For technical evaluation, application data (such as target use, critical purity needs, and anticipated volume) informs internal review for best-fit grade and packaging. Each sample receives a dedicated batch record and full identification documentation. Sampling valves, vessel decontamination, and gas phase transfer protocols mirror mainline production to provide representative material, not laboratory splits or pilot byproduct. Technical feedback from sample evaluation informs subsequent batch scheduling or custom formulation if standard grade misaligns with application demands.
Business cooperation adapts to partner risk profile, product application, and supply volatility. For new partners, entry-level purchase agreements streamline onboarding, linking delivery triggers with compliance documentation review and real-time logistics tracking. Stable, long-term customers gain access to reserved allocations, periodic audit reports, and technical problem-solving directly with our production teams. For project-driven procurement, cooperative engagement allows schedule adjustment, access to technical staff, and formulation or packaging modifications to support atypical application scenarios. Flexibility remains bounded within regulatory, safety, and grade-purity constraints outlined by internal risk management, customer contractual terms, and evolving national or international policy shifts related to chlorofluorocarbon use.
Research and development teams focus closely on containment, recovery, and alternative refrigerants due to regulatory and environmental pressure on legacy CFCs. In industrial practice, interest centers on mitigation of fugitive emissions. Process improvements look at minimizing off-gassing and supporting sectors with legacy equipment where direct substitutes remain limited by technical compatibility or retrofitting cost. Thermal stability and contaminant tolerance continue as important R&D themes—not every refrigeration system responds similarly to alternative blends, and system performance can shift dramatically with fluctuations in moisture, trace acids, or hydrocarbon content.
Emerging applications for CFC-12 remain rare, given phaseout protocols, but closed-cycle laboratory and specialty cooling environments with stringent chemical compatibility requirements occasionally require legacy supply. R&D projects examine blends for controlled atmospheres, semiconductor tool cooling, and maintenance of select military, aerospace, and scientific equipment engineered for legacy refrigerants where alternative chemistries have not yet cleared all technical hurdles.
CFC-12 grade quality is highly sensitive to process control. Technical challenges include regulation of halide purity, prevention of chlorinated byproduct generation, and long-term stability during storage, especially under variable humidity or during container transfer. Significant strides in closed recovery and recycling systems have dropped typical waste rates in compliant facilities; proprietary purification columns and on-line spectroscopic impurity screening address consistency for critical grades.
Most regulatory regions project strict controls or full phaseout for virgin CFC-12. Demand primarily persists for reclamation and re-certification rather than new manufacture, driven by ongoing needs of aging installed equipment in select economies, aerospace, and defense supply chains. New production exists almost solely for non-article export within the bounds of Montreal Protocol exemptions or for controlled use in essential maintenance. Volumes depend heavily on sector-specific exemptions and recycling loop capture rates.
Manufacturers dedicate technical resources to closed-loop recovery, advanced purification, and high-reliability packaging. Integrated leak monitoring, high-capacity sorbent beds for trace contaminant polishing, and automation of batch and fill processes support batch consistency. With reduction of market size, focus tightens on minimizing process losses and maximizing recovery from used product pools. Cross-over development with HFCs and HFOs, especially for equipment requiring transitional blends, accelerates knowledge transfer on corrosion inhibitors and lubricant compatibility.
Manufacturing sees pressure to adopt green chemistry protocols, enforce stringent operational containment, and implement lifecycle tracking. Feedstock selection now gives priority to reclaimed or recycled sources whenever technically feasible. Production teams adapt system designs, emphasizing minimal fugitive emissions, solvent recovery, and re-use of process auxiliaries. Purification technology increasingly targets removal of trace, process-specific halogenated impurities that can impact recyclability and cause long-term equipment degradation. Waste stream minimization and hazard control for downstream disposal or incineration guide process modifications and investment planning.
Technical service teams collaborate directly with equipment engineers, plant operators, and maintenance managers on grade selection, compatibility verification, and root cause investigation for contamination or performance drift. Historical data from upstream process control is available for customer audit where quality disputes arise. Experience shows analytical support for residuals—water, acids, unsaturates, and hydrocarbon traces—remains critical to resolving on-site complaints about off-design operation.
Support includes field analysis for compatibility in mixed-refrigerant settings and transition programs for equipment converting to alternate refrigerants. Custom consulting covers formulation adjustments, guidance on purge and flush cycles, and recommendations for monitoring protocols based on application environment and end-user safety requirements. Joint troubleshooting programs for high-value legacy installations diagnose system leaks, seal degradation, and lubricant interactions.
After-sales practice relies on quick-turnaround investigation, field batch tracing, and, when warranted, site intervention for incident analysis following abnormal equipment performance. On-demand training covers safe handling under evolving national and international regulatory protocols. Returned product evaluation adheres to defined internal quality standards, with acceptance criteria subject to grade, source, and contamination profile.
Operating as a direct manufacturer of Dichlorodifluoromethane (CFC-12), we oversee every stage from raw material input through final delivery. Chemical production is not just an output here—each batch of CFC-12 reflects deep technical oversight and a duty to meet consistently tight tolerance ranges vital for downstream processing.
Every drum, cylinder, or tank of CFC-12 emerging from our facilities results from strict process parameters and validated operating routines. Instead of batch variations, our blend design and purification lines produce consistent composition and moisture content, two elements crucial for sensitive industrial systems including foam-blowing, refrigeration, and aerosol propellants.
On-site analytical labs run regular checks on essential markers—water content, acidity, purity—to confirm each production run meets published technical grades. Any deviation triggers review, so buyers only receive material matching agreed specs.
CFC-12 plays a role that cannot be filled easily by substitutes in legacy systems. Major refrigeration plants, pharmaceutical aerosol lines, and select specialty manufacturing rely on stable CFC-12 supply for both process reliability and safety compliance. We support long-cycle operations through regular output planning, so shutdowns from material shortages do not disrupt end-users.
We never release off-specification product under any label. Each shipment ties back to production records and QA sign-off documents. Process instrumentation and continuous monitoring take precedence over speed, ensuring system operators and maintenance teams downstream face fewer issues tied to charge purity or contaminant content.
Bulk CFC-12 moves in tanks subjected to rigorous leak testing, valve integrity checks, and proper hydrostatic certifications. Drums for export and high-throughput plants feature tamper-evident seals and clear production tags, eliminating confusion during unpacking or recharging cycles. Storage yards attach priority to weather-protection and loading schedules, reducing transit risks and preserving cargo value.
Buyer teams—whether engineering, QA, or procurement—receive support from staff engaged in CFC-12 production daily. Troubleshooting guidance focuses on preserving equipment life, facilitating conversion studies, or tackling region-specific logistics and regulatory requirements. We view technical support as an extension of manufacturing, ensuring partners gain practical insight rather than generic advice.
Distributors, manufacturers, and procurement managers benefit from controlled lot assignment, stable lead times, and transparent paperwork. No spot trading or speculative inventory introduces uncertainty. Our position as a direct producer eliminates layers that can obscure traceability or delay support. Regular reviews with long-term partners allow for planning driven by plant schedules, not outside market shocks.
We remain committed to responsible production and long-term supply of Dichlorodifluoromethane, supporting critical industry during a period of evolving technical requirements and regulatory frameworks. Every canister, drum, or ton shipped reflects industrial know-how shaped by years in direct operation.
Every batch of dichlorodifluoromethane (CFC-12) we produce is tested for purity and impurity content, especially for refrigeration-grade applications. Purity represents a cornerstone for both safety and performance throughout the lifecycle of chillers, compressors, and refrigeration systems. We keep our average product purity well above 99.8%, meeting traditional industry standards for critical cooling equipment. For specialized customer groups who require higher-grade CFC-12, we provide options exceeding 99.95%, provided by careful optimization of our purification and distillation processes.
The key to reliable CFC-12 lies not just in the main content, but in tight control of specific impurities. Moisture ranks high as a concern since it triggers formation of ice or acids inside systems, leading to valve blockages or corrosion in steel and aluminum components. Each cylinder ships with moisture levels measured in parts per million, generally capped below 10 ppm in refrigeration-grade supply.
Non-condensable gases such as air, nitrogen, and oxygen occasionally linger after the bulk production phase. Even modest traces can drive up system pressure, cutting compressor efficiency and damaging seals over time. Our cylinder conditioning removes residual air and confirms low headspace pressure before filling.
Another focal point in our quality control is monitoring for fluorinated byproducts. Compounds like trichlorofluoromethane (CFC-11), dichlorofluoromethane (CFC-21), and related haloalkanes are minimized below tightly set thresholds. Our process reactors and separation columns pull these out through a combination of fractional distillation and deep drying techniques. Strict analysis keeps CFC-11 below 0.01%—a value demanded by the strictest OEM clients.
Hydrochloric and hydrofluoric acids form if any liberated chlorine or fluorine reacts with water present in the product. Minor acid concentrations, even fractions of a ppm, threaten metals and insulation materials downstream. We stabilize and test every batch, documenting acid levels to be nondetectable by standard titration.
We integrate continuous gas chromatography and moisture determination at several stages between reactor output and final packaging. Our technicians sample off each bulk storage tank using pre-dried glass apparatus to avert false high readings. Requalification happens both after prolonged storage and immediately before filling cylinders. For bulk shipments, the same impurity requirements apply at the railcar and tank truck level.
Trace oils from compressor or pump machinery in the filling area are another factor. Such residues lead to system fouling and clogging, impairing heat transfer. We opt for Teflon and chemically resistant elastomers in our plant equipment. All transfer lines are flushed and vacuum-purged before use.
Any time impurity levels rise outside of our internal specifications, production halts pending a root cause investigation. We document, calibrate, and update our distillation parameters as new detection equipment allows trace analysis at ever lower levels. Our approach uses both international standards and decades of operational experience to set targets that keep compressors running efficiently for years. For customers requiring specific analysis, we can provide detailed certificates of analysis with full breakdowns of all relevant trace constituents.
Long-term reliability—and reputation—comes from making sure quality starts at the point of manufacture, not after the fact. Experience proves one thing clearly: the consequences of overlooking seemingly minor impurities can only be avoided through strict and routine process control.
Dichlorodifluoromethane, known in the market as CFC-12 or R12, used to be a workhorse refrigerant and propellant before regulatory changes phased out its use in many regions. Despite these restrictions, some legacy systems — particularly in developing economies and specialized industrial applications — require continued access to high-purity CFC-12 for maintenance and operation. From our position as the original manufacturer, it is valuable to clarify expectations for minimum order quantity and lead times, which are frequent requests among bulk customers and procurement officers.
Our production process draws on a continuous batch method designed for industrial-scale output, not small lots. The minimum order quantity aligns with practical shipment standards and container logistics. In reality, below a certain volume, operational costs per unit escalate due to setup labor, containment safety, and regulatory documentation. For CFC-12, we handle orders starting from one ISO tank, which typically holds around 24 metric tons of product. This threshold reflects our operational model rather than an arbitrary figure.
Bulk requests below tank volume create inefficiency at the plant and during shipment. Most of our customers purchase at this minimum or in multiples, coordinated to fill tankers directly from reactor output lines. Our packaging meets established standards for hazardous materials and complies with transport regulations. Palletized cylinders or drums can be supplied for select markets, though the starting volume remains anchored to a full tank's equivalent.
Production lead times for CFC-12 depend on the alignment between scheduled manufacturing runs and regulatory milestones. Our facilities work under international oversight, and all batches are subject to environmental observation, as well as documentation covering origin, composition, and shipment. A typical production schedule allows for delivery within six to eight weeks after contract confirmation, provided the shipment aligns with regulatory export windows.
Unforeseen disruptions — often in the form of sudden policy changes or new import/export documentation requirements — can extend actual lead times. Further, production of CFC-12 involves the use of ozone-depleting substances. We follow protocols outlined by the Montreal Protocol and applicable domestic law, which constrains the volume and frequency with which we produce and move this material.
Bulk buyers managing maintenance or inventory for critical systems benefit from securing procurement well ahead of projected needs. Given the compliance-driven nature of CFC-12 manufacture and movement, our team recommends planning for an eight-week logistics and documentation window. Communicating intended end-use, destination, and specific purity requirements at the outset helps our technical and compliance teams steer clear of bottlenecks.
Access to CFC-12 remains a controlled process, given its environmental impact. Our team provides traceable documentation and supports transition strategies for clients upgrading to alternative refrigerants. Where possible, we help design supply timelines minimizing the need for emergency air-freight or non-standard packaging.
By partnering directly with us — the original manufacturer — buyers leverage reliability in sourcing, regulatory compliance, and consistent quality. Our support staff remains available for technical documentation, logistics planning, and product stewardship throughout the procurement process.
Bringing Dichlorodifluoromethane, also known as CFC-12, across international borders involves strict attention to documentation and certification. International treaties like the Montreal Protocol have outlined various control measures, chiefly because CFC-12’s environmental impact drew the attention of governments worldwide. Manufacturers who continue to produce or handle CFC-12 face a compliance landscape defined by bans, consumption quotas, and explicit licensing protocols.
For any shipment crossing a national border, an import license approved by both the exporting and importing governments sits at the core of legal movement. This document exists to prevent uncontrolled flow of ozone-depleting substances. In many nations, authorities require evidence of both the source and intended use, as outlined under Article 4B of the Montreal Protocol. Our technical team manages these requirements proactively, coordinating with environmental authorities to provide certified evidence of critical-use exemptions or essential service needs as allowed by national law.
Each batch of our CFC-12 is documented from raw material input through to finished product release. These records support chain of custody and supply traceability for years after delivery. Material safety data sheets follow the latest Globally Harmonized System (GHS) format, incorporating any changes in hazard classification and recommendations from industry bodies. Every shipment leaves our facility with an authentic certificate of analysis (COA), lot-specific information, and declarations for controlled substances in line with destination regulatory frameworks.
Receiving countries frequently require traceable proof of origin documents. Our compliance process includes authenticated certificates of origin backed by government authorities. Customs declarations reference applicable Harmonized System codes and include all supporting licenses and environmental certificates required by the country of import. As rules evolve due to international treaties and regional protocols, our compliance staff reviews every export against the latest customs and chemical control bulletins.
Our facility operates under permits mandated by environmental agencies, and our documentation includes evidence of environmental management systems in place. Waste and emissions records are retained for review by environmental inspectors or external auditors. For jobs where CFC-12 is supplied under authorized “essential use” categories, our dossier includes evidence of downstream user eligibility, as often requested during cross-border movement or inspections.
Regulations around CFC-12 imports often shift as countries tighten restrictions or phase down allowable volumes. Our legal and compliance team participates in international working groups to anticipate and adapt to these changes. We update procedural checklists, train logistics partners, and maintain dialogue with customs to reduce delays and ensure shipments reach customers strictly within authorized channels. Customers benefit from our investment in compliance infrastructure, removing avoidable risks from their procurement and operations.
In our view, responsible manufacturers play a direct role in preserving both regulatory trust and environmental safety. Our door remains open for technical and regulatory review of all documentation supporting CFC-12 shipments. Full traceability—backed by hands-on experience and transparent reporting—continues to define our standard.
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
