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Online Edition: "Specifications for Flavourings"

Flavouring Citric acid
Latest JECFA evaluation 2000 (Session 55)
Status of specification Full
Chemical name 2-Hydroxy-1,2,3-propane-tricarboxylic acid, monohydrate
JECFA number 218
CAS number 77-92-9
FEMA number
COE number
FLAVIS number
Molecular weight 210.14
Chemical formula C6H10O8
Physical form/odour White or colourless, odourless, crystalline solid. Monohydrate effloresces in dry air
Solubility Very soluble in water, slightly soluble in ether
Solubility in ethanol Freely soluble
Boiling point (°C) NA
Assay min % 99.5% on an anhydrous basis
Acid value max
Refractive index NA
Specific gravity NA
Other requirements Melting point: 152-154° for anhydrous form, about 100 for the monohydrate; positive test for citrate
ID Test Positive test for citrate