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Online Edition: "Specifications for Flavourings"

Flavouring Lactic acid
Synonym(s) 2-Hydroxy-propionic acid;alpha-Hydroxypropanoic acid
Latest JECFA evaluation 2001 (Session 57)
Status of specification Full
Chemical name 2-Hydroxypropanoic acid
JECFA number 930
CAS number 598-82-3
FEMA number 2611
COE number 4
FLAVIS number
Molecular weight 90.08
Chemical formula C3H6O3
Physical form/odour colourless to yellow hygroscopic crystals becoming syrupy liquid; odourless
Solubility miscible with water, glycerol, glycols, oils
Solubility in ethanol miscible at room temperature
Boiling point (°C) 122° (15 mm Hg)
Assay min % 95% (by chemical analysis (acid/base titration))
Acid value max
Refractive index 1.413-1.429
Specific gravity 1.200-1.209
Other requirements mp: 17°
ID Test IR