Perchloromethyl mercaptan
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CAS
594-42-3
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Cl3CSCl
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RTECS
PB0370000
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Synonyms & Trade Names
PCM, PMM, Trichloromethane sulfenyl chloride, Trichloromethyl sulfur chloride
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DOT ID & Guide
1670 / 157
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Exposure
Limits
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NIOSH REL: TWA 0.1 ppm (0.8 mg/m3)
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OSHA PEL: TWA 0.1 ppm (0.8 mg/m3)
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IDLH
10 ppm
See: 594423
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Conversion
1 ppm = 7.60 mg/m3
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Physical Description
Pale-yellow, oily liquid with an unbearable, acrid odor.
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MW: 185.9
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BP: 297°F (Decomposes)
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FRZ: ?
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Sol: Insoluble
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VP: 3 mmHg
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IP: ?
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Sp.Gr: 1.69
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Fl.P: NA
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UEL: NA
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LEL: NA
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Noncombustible Liquid, but will support combustion.
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Incompatibilities & Reactivities
Alkalis, amines, hot iron, water [Note: Corrosive to most metals. Forms HCl, sulfur & CO2 on contact with water.]
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Measurement Methods
None available
See: NMAM or OSHA Methods |
Personal Protection & Sanitation (See protection)
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
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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
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Exposure Routes
inhalation, skin absorption, ingestion, skin and/or eye contact
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Symptoms
Irritation eyes, skin, nose, throat; lacrimation (discharge of tears); cough, dyspnea (breathing difficulty), deep breathing pain, coarse rales; vomiting; pallor, tachycardia; acidosis; anuria; liver, kidney damage
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Target Organs
Eyes, skin, respiratory system, liver, kidneys
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See also: INTRODUCTION
See ICSC CARD: 0311 See MEDICAL TESTS: 0180
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