Appearance White or slightly yellowish,crystalline powder
Assay 99.5% min
Melting point 81.0℃-83.0℃
Aroma Similar to taste of vanilla
Solubility 1g in 3ml of 70% ethyl alcohol or 2ml 95% ethyl alcoho
Heay Metals(as Pb) ≤10mg/kg
Arsenic Content ≤3mg/kg
After drying weightlessness 0.5% max