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Online Edition: "Specifications for Flavourings"

Flavouring 3-Mercaptohexanal
Synonym(s) Hexanal, 3-mercapto-
Latest JECFA evaluation 2010 (Session 73)
Status of specification Full
Chemical name 3-mercaptohexanal
JECFA number 1929
CAS number 51755-72-7
FEMA number 4585
COE number
FLAVIS number 12.250
Molecular weight 132.22
Chemical formula C6H12OS
Physical form/odour Clear colourless liquid; Sharp penetrating onion-like aroma
Solubility Practically insoluble or insoluble in water
Solubility in ethanol Soluble
Boiling point (°C) 41-42° (2 mm Hg)
Assay min % 95%
Acid value max
Refractive index 1.466-1.476
Specific gravity 0.973-0.983 (20°)
Other requirements
ID Test MS