Appearance: white to pale yellow crystals, needle like Fragrance: similar taste of vanilla Melting point: 81.0-83.0 degree centigrade Solubility in ethanol(25degree centigrade): complies Loss on drying: 0.5% max. Arsenic: 0.0003% max. Heavy metal(Pb): 0.001% max Content: 97.0-101.0% The quality complies with FCCV standard.