1,1,2,2-Tetrachloro-1,2-difluoroethane
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CAS
76-12-0
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CCl2FCCl2F
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RTECS
KI1420000
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Synonyms & Trade Names
1,2-Difluoro-1,1,2,2-tetrachloroethane; Freon® 112; Halocarbon 112; Refrigerant 112
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DOT ID & Guide
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Exposure
Limits
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NIOSH REL: TWA 500 ppm (4170 mg/m3)
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OSHA PEL: TWA 500 ppm (4170 mg/m3)
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IDLH
2000 ppm
See: 76120
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Conversion
1 ppm = 8.34 mg/m3
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Physical Description
Colorless solid or liquid (above 77°F) with a slight, ether-like odor.
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MW: 203.8
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BP: 199°F
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MLT: 77°F
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Sol(77°F): 0.01%
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VP: 40 mmHg
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IP: 11.30 eV
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Sp.Gr: 1.65
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Fl.P: NA
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UEL: NA
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LEL: NA
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Noncombustible Solid
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Incompatibilities & Reactivities
Chemically-active metals such as potassium, beryllium, powdered aluminum, zinc, magnesium, calcium & sodium; acids
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Measurement Methods
NIOSH 1016; OSHA 7
See: NMAM or OSHA Methods |
Personal Protection & Sanitation (See protection)
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: When contaminated
Remove: When wet or contaminated
Change: No recommendation
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First Aid (See procedures)
Eye: Irrigate immediately
Skin: Soap wash promptly
Breathing: Respiratory support
Swallow: Medical attention immediately
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Respirator Recommendations
NIOSH/OSHA
Up to 2000 ppm:
(APF = 10) Any supplied-air respirator
(APF = 50) Any self-contained breathing apparatus with a full facepiece
Emergency or planned entry into unknown concentrations or IDLH conditions:
(APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode
(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus
Escape:
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister/Any appropriate escape-type, self-contained breathing apparatus
Important additional information about respirator selection
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Exposure Routes
inhalation, ingestion, skin and/or eye contact
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Symptoms
In animals: irritation eyes, skin; conjunctivitis; pulmonary edema; narcosis
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Target Organs
Eyes, skin, respiratory system, central nervous system
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