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| Phosgene | CAS 75-44-5 | ||
| COCl2 | RTECS SY5600000 | ||
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Synonyms & Trade Names Carbon oxychloride, Carbonyl chloride, Carbonyl dichloride, Chloroformyl chloride |
DOT ID & Guide 1076 125 |
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Exposure Limits |
NIOSH REL: TWA 0.1 ppm (0.4 mg/m3) C 0.2 ppm (0.8 mg/m3) [15-minute] | ||
| OSHA PEL: TWA 0.1 ppm (0.4 mg/m3) | |||
| IDLH 2 ppm | Conversion 1 ppm = 4.05 mg/m3 | ||
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Physical Description Colorless gas with a suffocating odor like musty hay. [Note: A fuming liquid below 47°F. Shipped as a liquefied compressed gas.] |
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MW: 98.9 |
BP: 47°F |
FRZ: -198°F |
Sol: Slight |
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VP: 1.6 atm |
IP: 11.55 eV |
RGasD: 3.48 |
Sp.Gr: 1.43 (Liquid at 32°F) |
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Fl.P: NA |
UEL: NA |
LEL: NA |
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| Nonflammable Gas | |||
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Incompatibilities & Reactivities Moisture, alkalis, ammonia, alcohols, copper [Note: Reacts slowly in water to form hydrochloric acid & carbon dioxide.] |
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Measurement Methods OSHA 61 |
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Personal Protection & Sanitation Skin: Prevent skin contact (liquid) Eyes: Prevent eye contact (liquid) Wash skin: When contaminated (liquid) Remove: When wet or contaminated (liquid) Change: No recommendation Provide: Quick drench (liquid) |
First Aid (See procedures) Eye: Irrigate immediately (liquid) Skin: Water flush immediately (liquid) Breathing: Respiratory support |
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Respirator Recommendations
NIOSH/OSHA Up to 1 ppm: (APF = 10) Any supplied-air respirator* Up to 2 ppm: (APF = 50) Any self-contained breathing apparatus with a full facepiece/(APF = 50) Any supplied-air respirator 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 canister providing protection against the compound of concern/Any appropriate escape-type, self-contained breathing apparatus |
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| Exposure Routes inhalation, skin and/or eye contact (liquid) | |
| Symptoms Irritation eyes; dry burning throat; vomiting; cough, foamy sputum, dyspnea (breathing difficulty), chest pain, cyanosis; liquid: frostbite | |
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Target Organs
Eyes, skin, respiratory system |
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| See also: INTRODUCTION |