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Online Edition: "Specifications for Flavourings"

Flavouring Methyl 1-propenyl sulfide
Synonym(s) 1-Propene, 1-(methylthio)-
Latest JECFA evaluation 2010 (Session 73)
Status of specification Full
Chemical name Mixture of (Z)-methyl(prop-1-en-1-yl)sulfane and (E)-methyl(prop-1-en-1-yl)sulfane
JECFA number 1910
CAS number 10152-77-9
FEMA number 4574
COE number 11538
FLAVIS number 12.136
Molecular weight 88.17
Chemical formula C4H8S
Physical form/odour Clear to pale yellow liquid; Acrid strong garlic-like aroma
Solubility Practically insoluble or insoluble in water
Solubility in ethanol Soluble
Boiling point (°C) 102° (957 mm Hg)
Assay min % 95% (isomeric mixture)
Acid value max
Refractive index 1.479-1.489
Specific gravity 0.887-0.893 (20°)
Other requirements Mixture of isomers: 53% Z; 46% E
ID Test MS