Phosgene |
Synonyms & Trade Names Carbon oxychloride, Carbonyl chloride, Carbonyl dichloride, Chloroformyl chloride |
CAS No. 75-44-5 |
RTECS No. SY5600000 |
DOT ID & Guide 1076 125 |
FormulaCOCl2 |
Conversion 1 ppm = 4.05 mg/m3 |
IDLH 2 ppm
See: 75445 |
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) |
Measurement Methods
OSHA 61
See: NMAM or OSHA Methods |
Physical Description Colorless gas with a suffocating odor like musty hay. [Note: A fuming liquid below 47°F. Shipped as a liquefied compressed gas.] |
MW: 98.9 |
BP: 47°F |
FRZ: -198°F |
Sol: Slight |
VP: 1.6 atm |
IP: 11.55 eV |
Sp.Gr: 1.43 (Liquid at 32°F) |
Fl.P: NA |
UEL: NA |
LEL: NA |
RGasD: 3.48 |
|
| Nonflammable Gas |
Incompatibilities & Reactivities Moisture, alkalis, ammonia, alcohols, copper [Note: Reacts slowly in water to form hydrochloric acid & carbon dioxide.] |
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 |
Target Organs Eyes, skin, respiratory system |
|
Personal Protection/Sanitation (See protection codes)
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
|
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
Important additional information about respirator selection |
| See also: INTRODUCTION See ICSC CARD: 0007 See MEDICAL TESTS: 0186 |
