General properties of HCFCs

Physical and Chemical data can be found on producers websites HCFC-22 (chloro-difluoro-methane)

Introduction

Chlorodifluoromethane is a non-flammable, colourless and nearly odourless gas under normal conditions. A large proportion is used as a chemical intermediate and therefore not emitted into the atmosphere. Other important uses are in refrigeration and in air conditioning systems; with present practice, most of the chlorodifluoromethane so used will eventually be emitted into the atmosphere.

Its moderate water solubility and low octanol/water partition coefficient indicate a negligible bioaccumulation potential. Contamination of water and food would not be expected from its physical and chemical properties and has not been reported.

Source
Joint Assessment of Commodity Chemicals No. 9
CHLORODIFLUOROMETHANE (HCFC-22)
ECETOC, October 19, 1989

Identity

Chemical structure :

Chemical Formula :

CHClF2

Common name :

Chlorodifluoromethane

Common synonyms :

  • Chlorofluorocarbon 22
  • Difluorochloromethane
  • Difluoromonochloromethane
  • FC 22
  • Flugene™ 22
  • Fluorocarbon 22
  • HCFC 22
  • HFA 22
  • Hydrochlorofluorocarbon 22
  • Hydrofluoroalkane22
  • methane,chlorodifluoro-
  • Monochlorodifluoromethane
  • Propellant 22
  • R 22
  • Refrigerant 22

Cas Registry Number :

75-45-6

Conversion factors:

1 ppm = 3.54 mg/m3
1 mg/ m3 = 0.282 ppm

HCFC-123 (2,2-dichloro-1,1,1- trifluoro-ethane)

Introduction

1,1-Dichloro-2,2,2-trifluoroethane is a non-flammable, volatile, colourless liquid under ambient conditions and has a faint odour of ether. It is produced and used as a substitute for the fully halogenated chlorofluorocarbons with comparable physical properties since it has more favourable environmental properties.

Dichlorotrifluoroethane would not be considered to be readily biodegradable. Studies conducted in algae, Daphnia, and rainbow trout indicated a moderate level of toxicity to aquatic organisms. The octanol/water partition coefficient (Pow, = 2.0-2.8) is indicative of a low potential to bioaccumulate.

Source
Joint Assessment of Commodity Chemicals No. 33
HCFC-123 (1,1-Dichloro-2,2,2-Trifluoroethane)
ECETOC, February 1996

Identity

Chemical structure :

Chemical Formula :

CHCI2CF3

Common name :

1,1-dichloro-2,2,2-trifluoroethane

Common synonyms :

  • 2,2-dichloro-1,1,1-trifluoroethane
  • Fluorocarbon 123
  • FC-123
  • HFA-123
  • HCFC-123
  • F-123
  • Ethane, dichlorotrifluoro-
  • Propellant 123
  • Refrigerant 123
  • R-123

Cas Registry Number :

306-83-2

Einecs Number :

206 190 3

Conversion factors

1 ppm = 6.25 mg/m3 at 25ºC
1 mg/m3 = 0.160 ppm at 25 ºC

Source
Joint Assessment of Commodity Chemicals No. 33
HCFC-123 (1,1-Dichloro-2,2,2-Trifluoroethane)
ECETOC, February 1996

HCFC-124 (1 chloro-1,2,2,2-tetrafluoroethane)

Introduction

1-Chloro-1,2,2,2-tetrafluoroethane (chlorotetrafluoroethane), a non-flammable colourless gas at room temperature.

Source
Joint Assessment of Commodity Chemicals No. 25
HCFC 124 (1-chloro-1,2,2,2- tetrafluoroethane) July 1994

Identity

Chemical structure :

Chemical Formula :

CHCIF-CF3

Common name :

1-chloro-1,2,2,2-tetrafluoroethane
chlorotetrafluoroethane

IUPAC Name :

Ethane, 2-chloro-1,1,1,2-tetrafluoro-

Common synonyms :

  • 1,1,1,2-tetrafluoro-2-chloroethane
  • Fluorocarbon 124
  • HFA-124
  • HCFC-124

Cas Registry Number :

2837-89-0

Einecs Number :

220-629-6

Conversion factors :

1 ppm = 5.58 mg/m3 at 25ºC
1 mg/m³ = 0.179 ppm at 25ºC

HCFC-141b (1 ,1-dichloro-1-fluoroethane)

Introduction

1,1-dichloro-1-fluoroethane (dichlorofluoroethane) is produced and used as a substitute for fully halogenated chlorofluorocarbons with comparable physical properties since it has more favourable environmental properties.

It is a volatile non flammable colourless liquid, with a weak ethereal odour and is slightly soluble in water. The low octanol/water partition coefficient (Pow = 2,3) indicates a low potential for bioaccumulation. The physical properties and results of acute ecotoxicity studies indicate that dichlorofluoroethane presents a low risk to the aquatic environment.

Identity

Chemical structure :

Chemical Formula :

CCI2F-CH3

Common name :

1,1-dichloro-1-fluoroethane, dichlorofluoroethane

Common synonyms :

  • Ethane 1,1-dichloro-1-fluoro
  • HFA 141b
  • HCFC 141b
  • R141b

Cas Registry Number :

1717-00-6

Einecs Number :

not listed

ELINCS :

listed

TSCA :

listed

Conversion factors :

1 ppm = 4.85 mg/m3 (20ºC, 1013 hPa)
1 mg/m3 = 0.206 ppm (20ºC, 1013 hPa)

HCFC-142b (1-chloro-1,1-difluoroethane)

Identity

Chemical structure :

Chemical Formula :

CCIF2CH3

Common name :

chlorodifluoroethane

IUPAC name :

1-chloro-1,1-difluoroethane

Common synonyms :

  • HCFC-142b
  • HFA-142b

Cas Registry Number :

75-68-3

Einecs Number :

200-891-8