Arbutin

ITEMSSPECIFICATION
AppearanceWhite or almost white crystal powder
Assay≥ 99.0%
SolubilitySolution water 1:10
Melting Point199.0-201.0±0.5℃
ClarityTranspency, colorless, non suspended matters
pH5.0-7.0
Specific Ratation-66°±2°
As≤2ppm
Hydroquinone≤2ppm
Heavy metals≤10ppm
Loss on Drying≤0.5%
Residue on Ignition≤0.5%
Bacterial Count≤300 cfu/g
Molds and Yeast≤100 cfu/g