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| Perchloromethyl mercaptan | CAS 594-42-3 | ||
| Cl3CSCl | RTECS PB0370000 | ||
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Synonyms & Trade Names PCM, PMM, Trichloromethane sulfenyl chloride, Trichloromethyl sulfur chloride |
DOT ID & Guide 1670 157 |
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Exposure Limits |
NIOSH REL: TWA 0.1 ppm (0.8 mg/m3) | ||
| OSHA PEL: TWA 0.1 ppm (0.8 mg/m3) | |||
| IDLH 10 ppm | 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 |
BP: 297°F (Decomposes) |
FRZ: ? |
Sol: Insoluble |
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VP: 3 mmHg |
IP: ? |
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Sp.Gr: 1.69 |
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Fl.P: NA |
UEL: NA |
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 |
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Personal Protection & Sanitation Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: When contaminated Remove: When wet or contaminated Change: No recommendation |
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 |
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| 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 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 |