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| Dichloromonofluoromethane | CAS 75-43-4 | ||
| CHCl2F | RTECS PA8400000 | ||
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Synonyms & Trade Names Dichlorofluoromethane, Fluorodichloromethane, Freon® 21, Genetron® 21, Halon® 112, Refrigerant 21 |
DOT ID & Guide 1029 126 |
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Exposure Limits |
NIOSH REL: TWA 10 ppm (40 mg/m3) | ||
| OSHA PEL†: TWA 1000 ppm (4200 mg/m3) | |||
| IDLH 5000 ppm See: 75434 | Conversion 1 ppm = 4.21 mg/m3 | ||
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Physical Description Colorless gas with a slight, ether-like odor. [Note: A liquid below 48°F. Shipped as a liquefied compressed gas.] |
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MW: 102.9 |
BP: 48°F |
FRZ: -211°F |
Sol(86°F): 0.7% |
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VP(70°F): 1.6 atm |
IP: 12.39 eV |
RGasD: 3.57 |
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Fl.P: NA |
UEL: NA |
LEL: NA |
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| Nonflammable Gas | |||
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Incompatibilities & Reactivities Chemically-active metals such as sodium, potassium, calcium, powdered aluminum, zinc & magnesium; acid; acid fumes |
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Measurement Methods NIOSH 2516 See: NMAM or OSHA Methods |
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Personal Protection & Sanitation Skin: Frostbite Eyes: Frostbite Wash skin: No recommendation Remove: No recommendation Change: No recommendation Provide: Frostbite |
First Aid (See procedures) Eye: Frostbite Skin: Frostbite Breathing: Respiratory support |
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Important additional information about respirator selection Respirator Recommendations NIOSH Up to 100 ppm: (APF = 10) Any supplied-air respirator Up to 250 ppm: (APF = 25) Any supplied-air respirator operated in a continuous-flow mode Up to 500 ppm: (APF = 50) Any self-contained breathing apparatus with a full facepiece/(APF = 50) Any supplied-air respirator with a full facepiece Up to 5000 ppm: (APF = 1000) Any supplied-air respirator operated in a pressure-demand or other positive-pressure mode 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, skin and/or eye contact (liquid) | |
| Symptoms Asphyxia, cardiac arrhythmias, cardiac arrest; liquid: frostbite | |
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Target Organs
respiratory system, cardiovascular system |
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| See also: INTRODUCTION See ICSC CARD: 1106 |