SPECIFICATION

STANDARD

Appearance

White to slightly yellow crystals, usually needles.

Odor

Odor and taste of vanilla

Solubility

Soluble in alcohol, chloroform, ether; 1 g dissolves in 100 mL water at 25°, in 20 mL glycerin, and in 20 mL water at 80°

Identification

The spectrum of the sample exhibits relative maxima at the same wavelengths as those of the spectrum below.

Assay

99.5% min

Loss on drying

0.5% max

Residue on ignition

0.05% max

Melting range

81.0-83.0°C

Heavy metals (as Pb)

10 mg/kg max

Lead

2 mg/kg max

Mercury

1 mg/kg max

Arsenic

3 mg/kg max