Item | Specifications |
Characteristics | White to slightly yellow crystals, usually needelike |
Odour | Characteristics of vanillia |
Solubility | 1g of vanillin soluble in 100ml water, 3ml 70% or 2ml 95% ethanol at 25℃,in 20ml glycerol, in 20ml water at 80℃soluble in chloroform ,ether |
Melting point | 81.0-83.0℃ |
Purity (by GC) | ≥99.50% |
Loss on drying | ≤0.5% |
Arsenic (as ) | ≤0.0003% |
Heavy metal (based on pb) | ≤0.001% |
Residue on ignition | ≤0.05% |