1-Chloro-1,1-difluoroethane
1-chloro-1,1-difluoroethane
CAS: 75-68-3
Molecular Formula: C2H3ClF2
1-Chloro-1,1-difluoroethane - Names and Identifiers
| Name | 1-chloro-1,1-difluoroethane |
| Synonyms | R-142b cfc142b CFC 142b HCFC-142b 1-chloro-1,1-difluoro 1-Chlor-1,1-difluorethan Difluoromonochloroethane 1,1,1-chlorodifluoroethane 1-chloro-1,1-difluoro-ethan 1-chloro-1,1-difluoroethane alpha-chloroethylidenefluoride alpha-Chloroethylidene fluoride |
| CAS | 75-68-3 |
| EINECS | 200-891-8 |
| InChI | InChI=1/C2H3ClF2/c1-2(3,4)5/h1H3 |
1-Chloro-1,1-difluoroethane - Physico-chemical Properties
| Molecular Formula | C2H3ClF2 |
| Molar Mass | 100.5 |
| Density | 1.108 |
| Melting Point | −131°C(lit.) |
| Boling Point | −10°C(lit.) |
| Vapor Presure | 2196 mm Hg ( 21 °C) |
| Vapor Density | 3.49 (vs air) |
| Stability | Stable. Highly flammable. Incompatible with strong oxidizing agents, metals - use brass regulators, steel cylinders for storage. |
| Explosive Limit | 18% |
| Refractive Index | 1.3672 (estimate) |
| Physical and Chemical Properties | Colorless transparent liquid, no abnormal odor. |
| Use | Used as refrigerant and temperature-sensitive medium |
1-Chloro-1,1-difluoroethane - Risk and Safety
| Risk Codes | R12 - Extremely Flammable R59 - Dangerous for the ozone layer |
| Safety Description | S38 - In case of insufficient ventilation, wear suitable respiratory equipment. S59 - Refer to manufacturer / supplier for information on recovery / recycling. |
| UN IDs | UN 2517 2.1 |
| WGK Germany | 1 |
| RTECS | KH7650000 |
| HS Code | 29033990 |
| Hazard Note | Irritant |
| Hazard Class | 2.1 |
| Toxicity | LC50 inhalation in mouse: 1758gm/m3/2H |
1-Chloro-1,1-difluoroethane - Upstream Downstream Industry
| Raw Materials | Hydrofluoric Acid |
1-Chloro-1,1-difluoroethane - Reference Information
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Introduction | R-142b refrigerant, alias R142b, Freon 142b, F-142b, HCFC-142b, etc, english name 1-chloro-1,1-difluoroethane, chemical formula CH3CF2Cl, trade name Reflube 142b. Because R-142b belongs to the HCFCs group of Substances (the second batch of restricted ODS Substances Class II Ozone-degrading Substances)-Damage to the Ozone layer, and the existence of greenhouse effect, therefore in developed countries (EU, Japan, united States), has stopped in the new air conditioning, refrigeration equipment on the initial installation; China currently for the R142b refrigerant production, initial installation, and re-add no restrictions. |
| Use | R-142b as a commonly used high temperature refrigerant,(R142b) it is mainly used for the important components of refrigeration and air conditioning system (high temperature air conditioning), heat pump, a variety of mixed refrigerant in high temperature environment, and polymer (plastic) foaming, constant temperature control switch and intermediate of aviation propellant, also used as chemical raw materials. It is used as the working fluid of the air cooler in high temperature environment, the heat pump working fluid and the induction medium of the temperature control element. used as refrigerant and temperature sensitive medium used as intermediate of refrigerant and rocket propellant |
| Application | R142b can be used as refrigerant, foaming agent, aviation propellant, organic synthesis raw material, etc, refrigerant is one of the important applications of R142b. R142b belongs to the second-generation hydrochlorofluorocarbons (HCFCs) refrigerant, ODP (ozone depleting potential), GWP (global warming potential) are high, is a greenhouse gas and will cause damage to the ozone layer, the phase-out is being accelerated. In China's refrigerant market in 2020, the third generation hydrofluorocarbon (HFCs) refrigerant is the mainstream product, but HCFCs refrigerant is still the most widely used category. R142b is one of the main HCFCs refrigerants, and the demand is second only to R22 and R141b. Organic synthesis of raw materials is another important application area of R142b, R142b can be used to synthesize polyvinylidene fluoride (PVDF). R142b by cracking, dehcl, dehydration, distillation and other processes can be prepared by vinylidene fluoride (VDF), vinylidene fluoride polymerization can be obtained polyvinylidene fluoride. Polyvinylidene fluoride is a kind of engineering plastic with excellent mechanical properties, high temperature resistance, corrosion resistance, aging resistance and good processing performance. It can be applied in a wide range of downstream applications, and the demand continues to grow, driving the rising consumption of R142b. |
| category | hazardous gas |
| toxicity grade | low toxicity |
| Acute toxicity | inhalation-rat LC50:2050g/cm/4 H; Inhalation-mouse LC50:1758g/m3/2 h |
| explosive hazard characteristics | mixture explosive with Air |
| flammability hazard characteristics | flammable; Thermal decomposition of toxic hydrogen fluoride, chloride gas |
| storage and transportation characteristics | The warehouse is ventilated and dried at low temperature; It is stored separately from the oxidant |
| fire extinguishing agent | water, foam, carbon dioxide mist |
| Occupational Standard | TWA 1000 PPM (4170 mg/m3) |
| DOT Classification | 2.1 (Flammable gas) |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-10 22:29:15
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