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Online Edition: "Specifications for Flavourings"

Flavouring Adipic acid
Synonym(s) Hexanedioic acid;1,4-Butanedicarboxylic acid
Latest JECFA evaluation 1999 (Session 53)
Status of specification Full
Chemical name Hexanedioic acid
JECFA number 623
CAS number 124-04-9
FEMA number 2011
COE number 26
FLAVIS number
Molecular weight 146.14
Chemical formula C6H10O4
Physical form/odour white crystals or crystalline powder; practically odourless; aqueous phase has a pleasant sour taste
Solubility slightly soluble in water; soluble in alcohol and acetone
Solubility in ethanol
Boiling point (°C) NA
Assay min % 99.6%
Acid value max
Refractive index NA
Specific gravity NA
Other requirements Heavy Metals: max. 10 ppm; Melting Range: 151.5 to 154°; Residue on Ignition: max. 0.002%; Water: max. 0.2%
ID Test IR