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Online Edition: "Specifications for Flavourings"

Flavouring dl-Isoleucine
Synonym(s) DL-2-Amino-3-methylvaleric acid;alpha-Amino-beta-methylvaleric acid
Latest JECFA evaluation 2004 (Session 63)
Status of specification Full
Chemical name 2-Amino-3-methylpentanoic acid
JECFA number 1422
CAS number 443-79-8
FEMA number 3295
COE number
FLAVIS number 17.010
Molecular weight 131.17
Chemical formula C6H13O2N
Physical form/odour White crystalline powder; odourless
Solubility Soluble in water; Insoluble in ether
Solubility in ethanol Insoluble
Boiling point (°C)
Assay min % 98%
Acid value max
Refractive index
Specific gravity
Other requirements mp: 290-292°
ID Test IR