Ethanethiol

CAS No. 75-08-1

Formula: C2H6S
Basic Info

Ethanethiol, commonly known as ethyl mercaptan, is a colorless gas or clear liquid with a distinct odor. It is an organosulfur compound with the formula CH3CH2SH. Abbreviated EtSH, it consists of an ethyl group (Et), CH3CH2, attached to a thiol group, SH. Its structure parallels that of ethanol, but with S instead of O. The odor of EtSH is infamous. Ethanethiol is more volatile than ethanol due to a diminished ability to engage in hydrogen bonding. Ethanethiol is toxic. It occurs naturally as a minor component of petroleum, and may be added to otherwise odorless gaseous products such as liquefied petroleum gas (LPG) to help warn of gas leaks. At these concentrations, ethanethiol is not harmful.

Formula
C2H6S
Molecular Weight
62.134
Exact Mass
62.019
LogP
0.9361
PSA
38.8
Synonyms

Ethaanthiol

ethyl mercaptan

mercaptoethane

etantiolol

Thioethanol

EM RT

ethane thiol

C2H5SH

ethyl mercaptane

Etantiolo

Ethanethiol

EM(TM) RT

1,3-ethanedithiol

Aethanethiol

mercaptoethanol

Ethanthiol

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Properties
Appearance & Physical State
Clear liquid
Density
0.839
Boiling Point
35ºC
Melting Point
-148ºC
Flash Point
-45ºC
Refractive Index
1.4296-1.4316
Stability
Stable. Extremely flammable - note low flash point. Incompatible with oxidizing agents, strong acids. May form explosive mixtures with air.
Storage Condition
2-8ºC
Vapor Density
2.1 (vs air)
Vapor Pressure
8.51 psi ( 20 °C)
Safety Info
RTECS
KI9625000
Safety Statements
S16-S25-S60-S61
WGK Germany
3
Risk Statements
R11; R20; R50/53
RIDADR
UN 2363
Hazard Class
3
Packing Group
I
Caution Statement
P210; P273; P501
Hazard Declaration
Caution Statement
Spectrum
NMR Spectrum 1H NMR : 90 MHz in CDCl3
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IR Spectrum IR : liquid film
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Mass Spectrum Mass
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Related Compound Information

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