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Online Edition: "Specifications for Flavourings"

Flavouring Methyl 3-acetoxy-2-methylbutyrate
Synonym(s) Butanoic acid, 3-(acetyloxy)-2-methyl-, methyl ester
Latest JECFA evaluation 2010 (Session 73)
Status of specification Full
Chemical name methyl 3-acetoxy-2-methylbutanoate
JECFA number 1951
CAS number 139564-42-4
FEMA number 4451
COE number
FLAVIS number 09.361
Molecular weight 174.19
Chemical formula C8H14O4
Physical form/odour Colourless clear liquid; Strong sweet fruity aroma
Solubility Practically insoluble or insoluble in water
Solubility in ethanol Soluble
Boiling point (°C) 145-152°
Assay min % 95%
Acid value max
Refractive index 1.413-1.423
Specific gravity 1.034-1.044 (20°)
Other requirements
ID Test HNMR MS
Spectrum