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A5460912

Methyl sulfide , Waterless grade, ≥99.0% , 75-18-3

Synonym(s):
Dimethyl sulfide;DMS;Methyl sulfide

CAS NO.:75-18-3

Empirical Formula: C2H6S

Molecular Weight: 62.13

MDL number: MFCD00008562

EINECS: 200-846-2

Update time: 2022-07-08

PRODUCT Properties

Melting point: −98 °C(lit.)
Boiling point: 38 °C(lit.)
Density  0.846 g/mL at 25 °C(lit.)
vapor density  2.1 (vs air)
vapor pressure  26.24 psi ( 55 °C)
refractive index  n20/D 1.435(lit.)
FEMA  2746 | METHYL SULFIDE
Flash point: −34 °F
storage temp.  Store at +2°C to +8°C.
solubility  Miscible with alcohols, ethers, esters, ketones, aliphatic and aromatic hydrocarbons.
form  Liquid
color  Clear colorless
Specific Gravity 0.849 (20/4℃)
Odor Ethereal, permeating; disagreeable; offensive.
explosive limit 2.2-19.7%(V)
Odor Threshold 0.003ppm
Odor Type sulfurous
Merck  14,6123
JECFA Number 452
BRN  1696847
Dielectric constant 6.3(20℃)
Exposure limits ACGIH: TWA 10 ppm
Stability: Stable. Incompatible with strong oxidizing agents. Highly flammable - note low boiling point, low flash point, and wide explosion limits. Mixtures with air are potentially explosive. Incompatible with strong oxidizing agents. Use in UK regulated by LPG Regulations 1978 in accordance with HSE guidance note CS17.
InChIKey QMMFVYPAHWMCMS-UHFFFAOYSA-N
LogP 0.89

Description and Uses

Dimethyl sulfide, a sulfur ether compound, shares structural and property similarities with dimethyl ether. It is a colorless, volatile liquid that exhibits a distinct seafood-like odor. This compound is naturally generated through protein decomposition and serves as one of the culprits responsible for the fishy scent often associated with seafood.

Dimethyl sulfide undergoes thiolation reaction with hydrogen sulfide (H2S) in the presence of tungsten-zirconia (WO3/ZrO2) catalyst to form methanethiol.

Safety

Symbol(GHS) 
GHS02
Signal word  Danger
Hazard statements  H225
Precautionary statements  P210-P233-P240-P241-P242-P243
Hazard Codes  F,Xn,Xi
Risk Statements  11-22-37/38-41-36
Safety Statements  7-9-16-29-33-36/39-26
RIDADR  UN 1164 3/PG 2
WGK Germany  1
RTECS  PV5075000
13
Autoignition Temperature 402 °F
TSCA  Yes
HS Code  2930 90 98
HazardClass  3
PackingGroup  II
Toxicity LD50 orally in Rabbit: 535 mg/kg LD50 dermal Rabbit > 5000 mg/kg

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