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| 1,1,1,2-Tetrachloro-2,2-difluoroethane | CAS 76-11-9 | ||
| CCl3CClF2 | RTECS KI1425000 | ||
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Synonyms & Trade Names 2,2-Difluoro-1,1,1,2-tetrachloroethane; Freon® 112a; Halocarbon 112a; Refrigerant 112a |
DOT ID & Guide |
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Exposure Limits |
NIOSH REL: TWA 500 ppm (4170 mg/m3) | ||
| OSHA PEL: TWA 500 ppm (4170 mg/m3) | |||
| IDLH 2000 ppm | 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 |
BP: 197°F |
MLT: 105°F |
Sol: 0.01% |
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VP: 40 mmHg |
IP: ? |
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Sp.Gr: 1.65 |
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Fl.P: NA |
UEL: NA |
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 |
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Personal Protection & Sanitation Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: When contaminated Remove: When wet or contaminated Change: No recommendation |
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 |
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| Exposure Routes inhalation, ingestion, skin and/or eye contact | |
| 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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| See also: INTRODUCTION |