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2-Propanethiol

2-Propanethiol Basic information
Product Name:2-Propanethiol
Synonyms:2-PROPANETHIOL;2-PROPYLMERCAPTAN;iso-C3H7SH;Isopropylthiol;mercaptanisopropylique;Propanethiol-(2);FEMA 3897;IPM(TM)
CAS:75-33-2
MF:C3H8S
MW:76.16
EINECS:200-861-4
Product Categories:thiol Flavor
Mol File:75-33-2.mol
2-Propanethiol Structure
2-Propanethiol Chemical Properties
Melting point −131 °C(lit.)
Boiling point 57-60 °C(lit.)
density 0.82 g/mL at 25 °C(lit.)
vapor density 2.6 (vs air)
vapor pressure 455 mm Hg ( 37.8 °C)
FEMA 3897 | 2-PROPANETHIOL
refractive index n20/D 1.426(lit.)
Fp <−30 °F
storage temp. Store below +30°C.
form Liquid
pkapK1:10.86 (25°C,μ=0.1)
color Colorless
OdorPowerful skunk.
Odor Threshold0.000006ppm
Odor Typealliaceous
Water Solubility Slightly soluble in water
Sensitive Air Sensitive
JECFA Number510
BRN 605260
Stability:Stable. Highly flammable - note low flashpoint. May form explosive mixtures with air.
LogP1.60
CAS DataBase Reference75-33-2(CAS DataBase Reference)
NIST Chemistry Reference2-Propanethiol(75-33-2)
EPA Substance Registry SystemIsopropyl mercaptan (75-33-2)
Safety Information
Hazard Codes F,Xi
Risk Statements 11-36/37/38-36/38
Safety Statements 16-26-9-37/39-33
RIDADR UN 2402 3/PG 2
WGK Germany 3
RTECS TZ7302000
F 13
TSCA Yes
HS Code 2930 90 98
HazardClass 3
PackingGroup II
Hazardous Substances Data75-33-2(Hazardous Substances Data)
ToxicityLD50 orally in Rabbit: > 2000 mg/kg
MSDS Information
ProviderLanguage
SigmaAldrich English
ACROS English
ALFA English
2-Propanethiol Usage And Synthesis
Chemical Propertiesliquid with an exceedingly unpleasant smell
Occurrence2-Propanethiol is a volatile sulfur compound that is reported to occur in irradiated beef.
Uses2-Propanethiol is used in preparation of polyol block copolymer. It is also used as standard for petroleum analysis; as intermediate; as natural gas odorant.
DefinitionChEBI: 2-Propanethiol is an alkanethiol that is propane substituted by a sulfanyl group at position 2.
Preparation2-Propanethiol is synthesised by the reaction of sodium hydrosulfide and brominated isopropane.
General DescriptionIsopropyl mercaptan is a white liquid with a strong skunk-like odor. (USCG, 1999)
Air & Water ReactionsHighly flammable. Soluble in water.
Reactivity Profile2-Propanethiol is incompatible with acids, diazo and azo compounds, halocarbons, isocyanates, aldehydes, alkali metals, nitrides, hydrides, and other strong reducing agents. Reactions with these materials generate heat and in many cases hydrogen gas. May liberate hydrogen sulfide when mixed with an acid.
HazardHighly flammable, dangerous fire hazard.
Health HazardInhalation causes loss of sense of smell, muscular weakness, convulsions, respiratory paralysis. Ingestion causes nausea and vomiting. Contact with eyes or skin causes irritation.
Purification MethodsPurify it as for propane-1-thiol above. [Beilstein 1 IV 1498.]
2-Propanethiol Preparation Products And Raw materials
Preparation ProductsISOPROPYLSULFONYL CHLORIDE-->ISOPROPYL METHYL SULFIDE-->Isopropylthiocyanate-->3-Oxothiobutyric acid S-isopropyl ester-->3-(isopropylthio)propanoic acid-->Benzaldehyde, 4-[(1-methylethyl)thio]--->IPTG
PYRITHIOXIN DIHYDROCHLORIDE Benzyl mercaptan MERCAPTANS Sodium thiomethoxide ISOPROPYL LAURATE CARBOXYMETHYLMERCAPTOSUCCINIC ACID 1,2-Ethanedithiol D-PENICILLAMINE DISULFIDE PYRITHIOXIN 2-Propanethiol 1-PROPANETHIOL GC STANDARD,propanethiol(non-specificname Isopropyl acetate METHYL MERCAPTAN Ethanethiol Isopropyl alcohol 2-Ethylhexyl 10-ethyl-4-[[2-[(2-ethylhexyl)oxy]-2-oxoethyl]thio]-4-methyl-7-oxo-8-oxa-3,5-dithia-4-stannatetradecanoate 1-Dodecanethiol Allyl mercaptan
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