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Online Edition: "Specifications for Flavourings"

Flavouring 1-Hydroxy-2-butanone
Synonym(s) 2-Oxo-1-butanol;Propionyl carbinol;Ethyl hydroxymethyl ketone;1-Butanol-2-one
Latest JECFA evaluation 2007 (Session 68)
Status of specification Full
Chemical name 1-Hydroxybutan-2-one
JECFA number 1717
CAS number 5077-67-8
FEMA number 3173
COE number
FLAVIS number 07.090
Molecular weight 88.11
Chemical formula C4H8O2
Physical form/odour Colourless liquid; Fruity aroma
Solubility Insoluble in water; soluble in diethyl ether
Solubility in ethanol Soluble
Boiling point (°C) 152-154°
Assay min % 90%
Acid value max
Refractive index 1.417-1.423
Specific gravity 1.017-1.022 (20°)
Other requirements Also contains 5-10% acetoin
ID Test MS