1-Propanethiol

Synonyms & Trade Names

3-Mercaptopropane, Propane-1-thiol, Propyl mercaptan, n-Propyl mercaptan

CAS No.

107-03-9

RTECS No.

TZ7300000

DOT ID & Guide

2402 130

Formula

CH₃CH₂CH₂SH

Conversion

1 ppm = 3.12 mg/m³

IDLH

N.D.
See: IDLH INDEX

Exposure Limits

NIOSH REL

C 0.5 ppm (1.6 mg/m³) [15-minute]

OSHA PEL

none

Measurement Methods

None available
See: NMAM or OSHA Methods

Physical Description

Colorless liquid with an offensive, cabbage-like odor.

Molecular Weight

76.2

Boiling Point

153°F

Freezing Point

-172°F

Solubility

Slight

Vapor Pressure

(77°F): 155 mmHg

Ionization Potential

9.195 eV

Specific Gravity

0.84

Flash Point

-5°F

Upper Explosive Limit

Lower Explosive Limit

Class IB Flammable Liquid: Fl.P. below 73°F and BP at or above 100°F.

Incompatibilities & Reactivities

Oxidizers, reducing agents, strong acids & bases, alkali metals, calcium hypochlorite

Exposure Routes

inhalation, ingestion, skin and/or eye contact

Symptoms

irritation eyes, skin, nose, throat, respiratory system; headache, nausea, dizziness, cyanosis; In Animals: liver, kidney damage

Target Organs

Eyes, skin, respiratory system, central nervous system, blood, liver, kidneys

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

First Aid

(See procedures)
Eye:Irrigate immediately
Skin:Soap wash
Breathing:Respiratory support
Swallow:Medical attention immediately

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

1-Propanethiol

NIOSH REL

OSHA PEL

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