1-Propanethiol
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CAS
107-03-9
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CH3CH2CH2SH
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RTECS
TZ7300000
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Synonyms & Trade Names
3-Mercaptopropane, Propane-1-thiol, Propyl mercaptan, n-Propyl mercaptan
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DOT ID & Guide
2402 130
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Exposure
Limits
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NIOSH REL: C 0.5 ppm (1.6 mg/m3) [15-minute]
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OSHA PEL: none
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IDLH
N.D.
See: IDLH INDEX
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Conversion
1 ppm = 3.12 mg/m3
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Physical Description
Colorless liquid with an offensive, cabbage-like odor.
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MW: 76.2
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BP: 153°F
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FRZ: -172°F
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Sol: Slight
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VP(77°F): 155 mmHg
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IP: 9.195 eV
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Sp.Gr: 0.84
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Fl.P: -5°F
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UEL: ?
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LEL: ?
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Class IB Flammable Liquid: Fl.P. below 73°F and BP at or above 100°F.
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Incompatibilities & Reactivities
Oxidizers, reducing agents, strong acids & bases, alkali metals, calcium hypochlorite
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Measurement Methods
None available
See: NMAM or OSHA Methods
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Personal Protection & Sanitation (See protection codes)
Skin: No recommendation
Eyes: Prevent eye contact
Wash skin: No recommendation
Remove: When wet (flammable)
Change: No recommendation
Provide: Eyewash
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First Aid (See procedures)
Eye: Irrigate immediately
Skin: Soap wash
Breathing: Respiratory support
Swallow: Medical attention immediately
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Respirator Recommendations
NIOSH
Up to 5 ppm:
(APF = 10) Any chemical cartridge respirator with organic vapor cartridge(s)
(APF = 10) Any supplied-air respirator
Up to 12.5 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 25 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 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 organic vapor canister/Any appropriate escape-type, self-contained breathing apparatus
Important additional information about respirator selection
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Exposure Routes
inhalation, ingestion, skin and/or eye contact
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Symptoms
Irritation eyes, skin, nose, throat, respiratory system; headache, nausea, dizziness, cyanosis; in animals: liver, kidney damage
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Target Organs
Eyes, skin, respiratory system, central nervous system, blood, liver, kidneys
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