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3-Methyl-2-butanethiol

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3-Methyl-2-butanethiol Basic information

Product Name:
3-Methyl-2-butanethiol
Synonyms:
  • 3-Methyl-2-butyl Mercaptan
  • 3-Methyl-2-butanethiol, 95%, remainder mainly 2-methyl-1-butanethiol
  • 3-Methyl-2-butanethiol >=98.0%
  • FEMA 3304
  • 3-Methyl-butyl-2-thiol
  • 1,2-Dimethylpropyl hydrosulfide
  • 2-butanethiol,3-methyl-
  • 3-methyl-2-Butanethio
CAS:
2084-18-6
MF:
C5H12S
MW:
104.21
EINECS:
218-223-9
Product Categories:
  • Alphabetical Listings
  • Flavors and Fragrances
  • thiol Flavor
  • M-N
Mol File:
2084-18-6.mol
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3-Methyl-2-butanethiol Chemical Properties

Melting point:
-109.95°C (estimate)
Boiling point:
109-112 °C(lit.)
Density 
0.841 g/mL at 25 °C(lit.)
FEMA 
3304 | 3-METHYL-2-BUTANETHIOL
refractive index 
n20/D 1.444(lit.)
Flash point:
60 °F
form 
liquid (estimate)
pka
10.85±0.10(Predicted)
Sensitive 
Air Sensitive
JECFA Number
517
CAS DataBase Reference
2084-18-6(CAS DataBase Reference)
NIST Chemistry Reference
2-Butanethiol, 3-methyl-(2084-18-6)
EPA Substance Registry System
2-Butanethiol, 3-methyl- (2084-18-6)
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Safety Information

Hazard Codes 
F
Risk Statements 
11
Safety Statements 
16-33-36-24/25
RIDADR 
UN 3336 3/PG 2
WGK Germany 
3
TSCA 
Yes
HazardClass 
3
PackingGroup 
II
HS Code 
29309090

MSDS

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3-Methyl-2-butanethiol Usage And Synthesis

Description

3-Methyl-2-butanethiol has a repulsive, characteristic mercaptanlike odor. Prepared from isoamyl chloride and potassium sulfhydrate; also the corresponding sodium salt can be prepared from diisopentyl-disulfide and sodium metal in liquid ammonia.

Chemical Properties

3-Methyl-1-butanethiol has a repulsive, characteristic mercaptan-like odor.

Chemical Properties

Colorless liquid; offensive odor.Insoluble in water; soluble in organic solvents.

Occurrence

Reported found in cooked beef.

Uses

Polymerization modifier, insecticide intermediate, vulcanization accelerator intermediate, nonionic surface-active agent.

Preparation

From isoamyl chloride and potassium sulfhydrate; also, the corresponding sodium salt can be prepared from diisopentyldisulfide and sodium metal in liquid ammonia.

Hazard

Flammable, dangerous fire risk.

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