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Online Edition: "Specifications for Flavourings"

Flavouring 1-Butanethiol
Synonym(s) Butyl mercaptan
Latest JECFA evaluation 1999 (Session 53)
Status of specification Full
Chemical name 1-Butanethiol
JECFA number 511
CAS number 61122-71-2
FEMA number 3478
COE number 526
FLAVIS number
Molecular weight 90.19
Chemical formula C4H10S
Physical form/odour colourless to pale yellow liquid with garlic or skunk-like odour
Solubility 0.6 g in 100 ml water; slightly soluble in oils
Solubility in ethanol 1 ml in 1 ml 95% alcohol
Boiling point (°C) 97-98.4°
Assay min % 98%
Acid value max
Refractive index 1.444-1.452
Specific gravity 0.842-0.847
Other requirements
ID Test IR
Spectrum