Difluoromethane
Agent Name
Difluoromethane
CAS Number
75-10-5
Formula
C-H2-F2
Major Category
Solvents
Synonyms
Carbon fluoride hydride; Freon 32; Genetron 32; HFC 32; Khladon 32 [Russian]; Methylene difluoride; R 32 (refrigerant); Methane, difluoro-; [ChemIDplus] UN3252
Category
Chlorofluorocarbons
Description
Colorless gas; [Merck Index] Colorless liquefied gas with a faint ethereal odor; [MSDSonline]
Sources/Uses
Used as a refrigerant and to make other chemicals; [Hawley]
Comments
Evaporating liquid can cause frostbite; May cause asphyxiation without warning; [CAMEO] Evaporating liquid can cause frostbite; Inhalation of high concentrations can cause CNS depression and cardiac arrhythmias; In confined space spill, may displace air and act as simple asphyxiant; [MSDSonline]
Biomedical References
Exposure Assessment
Lethal Concentration
LC50 (rat) = 1,890,000 mg/m3/4h
WEEL
1000 ppm
Adverse Effects
Neurotoxin
Acute solvent syndrome
Other Poison
Simple Asphyxiant
Diseases, Processes, and Activities Linked to This Agent
Diseases
Occupational diseases associated with exposure to this agent: