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Online Edition: "Specifications for Flavourings"

Flavouring Methyl 2-hydroxy-4-methylpentanoate
Synonym(s) Methyl 2-hydroxyisocaproate
Latest JECFA evaluation 2003 (Session 61)
Status of specification Full
Chemical name Pentanoic acid, 2-hydroxy-4-methyl-, methyl ester
JECFA number 590
CAS number 40348-72-9
FEMA number 3706
COE number
FLAVIS number 09.548
Molecular weight 146.19
Chemical formula C7H14O3
Physical form/odour colourless liquid with sweet, fruity, musty odour
Solubility slightly soluble in water; soluble in fat
Solubility in ethanol
Boiling point (°C) 72° (10 mm Hg)
Assay min % 99%
Acid value max
Refractive index 1.425-1.435
Specific gravity 0.951-0.957
Other requirements
ID Test HNMR IR MS
Spectrum