NAME: 1,1,2,2-Tetrachloro-1,2-Difluoroethane
SYNONYM(s):
Refrigerant 112; Halocarbon 112
IMIS: 2339
CAS: 76-12-0
NIOSH: RTECS KI1420000; 33587
DOT: UN1078 Refrigerant Gas, NOS
DESCRIPTION:
Colorless liquid or solid with a slight ether-like odor.
MW:
204
BP:
199 F
VP:
40 mm
MP:
79 F
INCOM:
Chemically active metals: sodium, potassium, beryllium, powdered
aluminum, zinc, magnesium
Exposure Limits
OSHA GENERAL INDUSTRY PEL:
500 ppm, 4170 mg/m3
OSHA CONSTRUCTION INDUSTRY PEL:
500 ppm, 4170 mg/m3 TWA
ACGIH TLV:
500 ppm, 4170 mg/m3 TWA
NIOSH REL: 500 ppm TWA
Health Factors
SYMPTOM(s):
Skin irritation; conjunctivitis; pulmonary edema
HEALTH EFFECTS:
Cumulative liver damage (HE3); Lung edema (HE11)
Narcosis (HE8); Irritation-Eyes, Skin---Mild (HE16)
ORGAN:
Lungs, skin
Monitoring
PRIMARY SAMPLING/ANALYTICAL METHOD (SLC1):
MEDIA:
Charcoal Tube (100/50 mg sections, 20/40 mesh)
ANL SOLVENT:
Carbon Disulfide
MAX V:
2 Liters MAX F:
0.035 L/min
ANL 1:
Gas Chromatography; GC/FID
REF:
1 (NIOSH 1016)
SAE:
0.09
CLASS:
Partially Validated
SECONDARY SAMPLING/ANALYTICAL METHOD (SAM2):
DEVICE: Instrumentation
COMPANY: Infrared Spectrophotometer
PART #: MIRAN 1A & 1B
RANGE: 0.5 ppm @ 9.8 um
CLASS: Mfg
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