Allyl methyl sulfide

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Allyl methyl sulfide
CAS number 10152-76-8 N
PubChem 66282
ChemSpider 21159856 YesY
EC number 233-422-0
UN number 1993
MeSH allyl+methyl+sulfide
RTECS number UD1015000
Jmol-3D images Image 1
Molecular formula C4H8S
Molar mass 88.17 g mol−1
Odor Garlic
Density 0.803 g cm−3
Boiling point 92 °C; 197 °F; 365 K
GHS pictograms The flame pictogram in the Globally Harmonized System of Classification and Labelling of Chemicals (GHS)
GHS signal word DANGER
GHS hazard statements H225
GHS precautionary statements P210
EU classification Highly Flammable F
R-phrases R11
S-phrases S16, S29, S33
Flash point 18.0 °C (64.4 °F; 291.1 K)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
 N (verify) (what is: YesY/N?)
Infobox references

Allyl methyl sulfide (AMS) is an organosulfur compound with the chemical formula CH2=CHCH2SCH3. The molecule features two functional groups, an allyl (CH2=CHCH2) and a sulfide. It is a colourless liquid with a strong odor characteristic of alkyl sulfides. It is a metabolite of garlic, and "garlic breath" is attributed to its presence.[1]

It is prepared by the reaction of allyl chloride with sodium hydroxide and methanethiol.

CH2=CHCH2Cl + NaOH(aq) + CH3SH → CH2=CHCH2SCH3 + NaCl + H2O


  1. ^ Eric Block (2010-01-04). Garlic and Other Alliums: The Lore and the Science. Royal Society of Chemistry. ISBN 978-0-85404-190-9.