Perchloromethyl mercaptan |
Synonyms & Trade Names PCM, PMM, Trichloromethane sulfenyl chloride, Trichloromethyl sulfur chloride |
CAS No. 594-42-3 |
RTECS No. PB0370000 |
DOT ID & Guide 1670 157 |
FormulaCl3CSCl |
Conversion 1 ppm = 7.60 mg/m3 |
IDLH 10 ppm
See: 594423 |
Exposure Limits NIOSH REL: TWA 0.1 ppm (0.8 mg/m3)
OSHA PEL: TWA 0.1 ppm (0.8 mg/m3) |
Measurement Methods
None available
See: NMAM or OSHA Methods |
Physical Description Pale-yellow, oily liquid with an unbearable, acrid odor. |
MW: 185.9 |
BP: 297°F (Decomposes) |
FRZ: ? |
Sol: Insoluble |
VP: 3 mmHg |
IP: ? |
Sp.Gr: 1.69 |
Fl.P: NA |
UEL: NA |
LEL: NA |
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| Noncombustible Liquid, but will support combustion. |
Incompatibilities & Reactivities Alkalis, amines, hot iron, water [Note: Corrosive to most metals. Forms HCl, sulfur & CO2 on contact with water.] |
Exposure Routes inhalation, skin absorption, ingestion, skin and/or eye contact |
Symptoms irritation eyes, skin, nose, throat; lacrimation (discharge of tears); cough, dyspnea (breathing difficulty), deep breath pain, coarse rales; vomiting; pallor, tachycardia; acidosis; anuria; liver, kidney damage |
Target Organs Eyes, skin, respiratory system, liver, kidneys |
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Personal Protection/Sanitation (See protection codes)
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 immediately
Breathing: Respiratory support
Swallow: Medical attention immediately |
Respirator Recommendations NIOSH/OSHA Up to 1 ppm:
(APF = 10) Any chemical cartridge respirator with organic vapor cartridge(s)*
(APF = 10) Any supplied-air respirator* Up to 2.5 ppm:
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode*
(APF = 25) Any powered, air-purifying respirator with organic vapor cartridge(s)* Up to 5 ppm:
(APF = 50) Any chemical cartridge respirator with a full facepiece and organic vapor cartridge(s)
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister
(APF = 50) Any powered, air-purifying respirator with a tight-fitting facepiece and organic vapor cartridge(s)*
(APF = 50) Any supplied-air respirator that has a tight-fitting facepiece and is operated in a continuous-flow mode*
(APF = 50) Any self-contained breathing apparatus with a full facepiece
(APF = 50) Any supplied-air respirator with a full facepiece Up to 10 ppm:
(APF = 2000) Any supplied-air respirator that has a full facepiece and is 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
Important additional information about respirator selection |
| See also: INTRODUCTION See ICSC CARD: 0311 See MEDICAL TESTS: 0180 |
