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Chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs) are fully or partly halogenated hydrocarbons that contain carbon (C), hydrogen (H), chlorine (Cl), and fluorine (F), produced as volatile derivatives of methane, ethane, and propane. The most common example is dichlorodifluoromethane (R-12).

HCFCs, or Hydrochloroflourocarbons, are the close neighbor of CFCs. The main difference between the two types of refrigerant is that HCFCs contain one additional hydrogen atom compared to CFCs. Both CFCs and HCFCs were widely used in the twentieth century as refrigerants, propellants, and solvents.

2025年3月12日 · Fact sheet with information homeowners need to know about having a home air conditioning serviced or replaced, in light of the HCFC phaseout.

HCFC (hydrochlorofluorocarbon) and HFC (hydrofluorocarbon) are both types of synthetic refrigerants used in various applications. However, they differ in terms of their chemical composition and environmental impact.

2025年3月13日 · Overview of the HCFC allowance system, which provides flexibility for industry to operate efficiently while ensuring the United States meets its agreements under the Montreal Protocol.

Chlorodifluoromethane or difluoromonochloromethane is a hydrochlorofluorocarbon (HCFC). This colorless gas is better known as HCFC-22, or R-22, or CHClF 2. It was commonly used as a propellant and refrigerant.

2024年8月15日 · HCFCs were developed as transitional substitutes for Class I ODS and are subject to a later phaseout schedule than Class I ODS. HCFCs were used in a wide variety of applications, including refrigeration, air conditioning, foam …

What are hydrochlorofluorocarbons (HCFCs)? HCFCs are compounds containing carbon, hydrogen, chlorine and fluorine. Industry and the scientific community view certain chemicals within this class of compounds as acceptable temporary alternatives to chlorofluorocarbons.

2024年11月18日 · The main difference is in the extinguishing agent used, with dry chemical extinguishers being more versatile but leaving residue, while HCFC 123 extinguishers are cleaner and more suitable for ...