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Basic Information
CAS No.: 75-45-6
Name: Chlorodifluoromethane
Molecular Structure:
Molecular Structure of 75-45-6 (Chlorodifluoromethane)
Formula: CHClF2
Molecular Weight: 86.4687
Synonyms: Algeon 22;Algofrene 22;Algofrene 6;Arcton 22;Arcton 4;CFC 22;Chlorodifluoromethane;Daiflon 22;Difluoromonochloromethane;Dymel 22;F 22 (halocarbon);FC 22;FC 22 (halocarbon);FKW 22;Flugene22;Forane 22;Freon 22;Frigen 22;Fron 22;HFA 22;Haltron 22;Isceon 22;Isotron 22;Khladon 22;Korfron 22;Propellant 22;Refrigerant R 22;Solkane 22;Ucon 22;
EINECS: 200-871-9
Density: 1.277 g/cm3
Melting Point: -146 °C
Boiling Point: -40.8 °C
Solubility: slightly soluble in water
Appearance: Colourless gas
Hazard Symbols: FlammableF
Risk Codes: 40-59
Safety: 23-59
Transport Information: UN 1018
PSA: 0.00000
LogP: 1.44780
Synthetic route

chlorodifluoromethyllithium

75-45-6

Chlorodifluoromethane

Conditions
ConditionsYield
With 2,2,2-trifluoroethanol In N,N,N,N,N,N-hexamethylphosphoric triamide decompn. in the presence of CF3CH2OH at reflux temp., 12 h;100%
In N,N,N,N,N,N-hexamethylphosphoric triamide
75-09-2

dichloromethane

7664-41-7

ammonia

A

74-90-8

hydrogen cyanide

B

75-45-6

Chlorodifluoromethane

Conditions
ConditionsYield
nickel In neat (no solvent) steady-state flow reaction over Ni catalyst at 723 K;A 98.3%
B 0.6%
nickel In neat (no solvent) steady-state flow reaction over Ni catalyst at 673 K;A 75.4%
B 1.7%
79-53-8

chloropentafluoroacetone

A

75-45-6

Chlorodifluoromethane

B

354-34-7

trifluoroacetyl fluoride

C

2925-22-6

2,2-difluoroacetyl fluoride

D

152239-89-9

C3HClF6O

Conditions
ConditionsYield
With chlorine monofluoride; cesium fluoride 1.) -140 degC to -75 degC over 6 h, 2.) -75 degC, 2 h; Further byproducts given;A n/a
B n/a
C n/a
D 90%
75-09-2

dichloromethane

7664-41-7

ammonia

A

74-90-8

hydrogen cyanide

B

75-10-5

Difluoromethane

C

75-45-6

Chlorodifluoromethane

D

124-38-9

carbon dioxide

E

201230-82-2

carbon monoxide

Conditions
ConditionsYield
nickel titanate In neat (no solvent) steady-state flow reaction over NiTO3*6H2O catalyst at 773 K, further by-product is CFH3 (yield 0.3 %);A 81.8%
B 0.1%
C 0.6%
D 10.4%
E 6.8%
nickel titanate In neat (no solvent) steady-state flow reaction over NiTO3*6H2O catalyst at 823 K, further by-product is CFH3 (yield 0.4 %);A 66.2%
B 0.2%
C 1.4%
D 12.9%
E 18.8%
With catalyst: Pt/C In neat (no solvent) steady-state flow reaction over Pt/C catalyst at 821 K, a further by-product is CFH3 (yield 0.2 %);A 64.6%
B 0.3%
C 0.2%
D 0.6%
E 0.8%
1895-39-2

sodium chlorodifluoroacetate

75-45-6

Chlorodifluoromethane

Conditions
ConditionsYield
In N,N-dimethyl-formamide at 100℃;68%
75-09-2

dichloromethane

7664-41-7

ammonia

A

74-90-8

hydrogen cyanide

B

593-53-3

Methyl fluoride

C

75-10-5

Difluoromethane

D

75-45-6

Chlorodifluoromethane

E

124-38-9

carbon dioxide

Conditions
ConditionsYield
With catalyst: Pt/C In neat (no solvent) steady-state flow reaction over Pt/C catalyst at 769 K;A 53.4%
B 0.3%
C 0.5%
D 7.6%
E 0.5%
1717-59-5

2,2-difluoro-2-(fluorosulfonyl)acetic acid

1005-30-7

sodium 4-iodo-benzoate

A

75-45-6

Chlorodifluoromethane

B

120608-87-9

4-Iodo-benzoic acid difluoromethyl ester

Conditions
ConditionsYield
With potassium chloride In acetonitrile at 50℃; for 2.5h;A n/a
B 45%
79-38-9

Chlorotrifluoroethylene

152239-89-9

C3HClF6O

A

75-45-6

Chlorodifluoromethane

B

354-34-7

trifluoroacetyl fluoride

C

2925-22-6

2,2-difluoroacetyl fluoride

D

2-(2,2-Dichloro-1,1,2-trifluoro-ethoxy)-1,1,1,2,3,3-hexafluoro-propane

Conditions
ConditionsYield
In trichlorofluoromethane for 18h; -135 degC to 25 degC; Further byproducts given;A n/a
B n/a
C n/a
D 40%
420-49-5

chlorodifluoroiodomethane

potassium hydroxide

A

75-45-6

Chlorodifluoromethane

B

584-08-7

potassium carbonate

Conditions
ConditionsYield
In ethanol decompn. with alc. KOH at 35°C in 48h;;A 24%
B n/a
In ethanol
75-43-4

Dichlorofluoromethane

1188-14-3

Triethylgerman

A

75-10-5

Difluoromethane

B

75-09-2

dichloromethane

C

75-46-7

trifluoromethan

D

75-45-6

Chlorodifluoromethane

E

994-28-5

triethylchlorogermane

Conditions
ConditionsYield
With ACF. Et3GeH at 25℃; for 72h; Schlenk technique; Inert atmosphere;A n/a
B n/a
C 22%
D 16%
E n/a
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Chemistry

Molecular Formula: CHClF2
Molecular Weight: 86.47
EINECS: 200-871-9 
Index of Refraction: 1.278
Density: 1.277 g/cm3
Melting point: -146 °C
Boiling Point: 155 °C
Water solubility: Slightly soluble
Appearance: Colourless gas
Structure of Difluorochloromethane (CAS NO.75-45-6):
                      
IUPAC Name: Chloro(difluoro)methane
Product Category of Difluorochloromethane (CAS NO.75-45-6): refrigerants;Organics;Refrigerant

Uses

 Difluorochloromethane (CAS NO.75-45-6) is mainly used as mainlyPropellant, fumigant, insecticide. It  was once commonly used as a propellant and in air conditioning applications.

Production

 Difluorochloromethane (CAS NO.75-45-6) can be prepared from Chloroform : HCCl3 + 2HF → HCF2Cl + 2HCl .

Toxicity Data With Reference

1.    

mmo-sat 33 pph/24H-C

    TOLED5    Toxicology Letters. 2 (1978),1.
2.    

mma-sat 33 pph/24H-C

    TOLED5    Toxicology Letters. 2 (1978),1.
3.    

ihl-rat LC50:35 pph/15M

    HUTODJ    Human Toxicology. 1 (1982),239.
4.    

ihl-mus LC50:28 pph/20M

    TXAPA9    Toxicology and Applied Pharmacology. 59 (1981),64.
5.    

ihl-dog LCLo:70 pph

    TXAPA9    Toxicology and Applied Pharmacology. 2 (1960),363.

Consensus Reports

It is reported in EPA TSCA Inventory. EPA Genetic Toxicology Program.

Safety Profile

Hazard Codes: FlammableF
Risk Statements: 40-59 
R40:Limited evidence of a carcinogenic effect. 
R59:Dangerous to the ozone layer.
Safety Statements: 23-59 
S23:Do not breathe vapour. 
S59:Refer to manufacturer / supplier for information on recovery / recycling.
Mildly toxic by inhalation. Experimental reproductive effects. Mutation data reported. An asphyxiant in high concentrations. At elevated pressures, 50% mixtures with air are combustible although ignition is difficult. When heated to decomposition it emits toxic fumes of F and Cl.

Standards and Recommendations

OSHA PEL: TWA 1000 ppm
ACGIH TLV: TWA 1000 ppm; Not Classifiable as a Human Carcinogen
DFG MAK: 500 ppm (1800 mg/m3)
DOT Classification:  2.2; Label: Nonflammable Gas

Specification

 Difluorochloromethane , its cas register number is 75-45-6. It also can be called Chlorodifluoromethane ; Fluorocarbon 22 ; Freon R-22 ; and Freon 22 . Difluorochloromethane (CAS NO.75-45-6) is shipped as a liquefied gas under its own vapor pressure, and is noncombustible. Difluorochloromethane can asphyxiate by the displacement of air. Contact with the liquid can cause frostbite.