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Online Edition: "Specifications for Flavourings"

Flavouring 4-Hydroxybenzoic acid
Synonym(s) p-Hydroxybenzoic acid;p-Salicylic acid
Latest JECFA evaluation 2002 (Session 59)
Status of specification Full
Chemical name 4-Hydroxybenzoic acid
JECFA number 957
CAS number 99-96-7
FEMA number 3986
COE number
FLAVIS number
Molecular weight 138.12
Chemical formula C7H6O3
Physical form/odour White crystalline powder; faint nutty odour
Solubility slightly soluble in water; soluble in organic solvents
Solubility in ethanol freely soluble
Boiling point (°C) NA
Assay min % 99% (by chemical analysis, acid-base titration)
Acid value max
Refractive index NA
Specific gravity NA
Other requirements m.p. 213-214°
ID Test IR