1,1,1,2-Tetrachloro-2,2-difluoroethane
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CAS
76-11-9
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CCl3CClF2
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RTECS
KI1425000
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Synonyms & Trade Names
2,2-Difluoro-1,1,1,2-tetrachloroethane; Freon® 112a; Halocarbon 112a; Refrigerant 112a
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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: 76119
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Conversion
1 ppm = 8.34 mg/m3
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Physical Description
Colorless solid with a slight, ether-like odor. [Note: A liquid above 105°F.]
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MW: 203.8
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BP: 197°F
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MLT: 105°F
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Sol: 0.01%
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VP: 40 mmHg
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IP: ?
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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, calcium, magnesium & 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
Irritation eyes, skin; central nervous system depression; pulmonary edema; drowsiness; dyspnea (breathing difficulty)
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Target Organs
Eyes, skin, respiratory system, central nervous system
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