Arbutin

CHEMICAL NAME：4-Hydroxyphenyl-β-D-glucopyranoside
CAS No.：497-76-7 EINECS No.：207-850-3

Appearance: White or almost white crystal powder
Solubility: Solution water 1:10
Melting point: 199.0-201.0℃
Identification: Positive
Clarity of solution: ≤II reference suspension
PH: 5.0-7.0
Specific rotation: -64º - -66º
Loss on drying: ≤0.5%
Ash: ≤0.1%
Heavy metals: ≤0.002%
Hydroquinone: Can’t examine out
Assay [by HPLC]: ≥99.0%
Microbiological Test:
Bacteria: ≤300CPU
Fungi: ≤100CPU
Reference addition: 1~3%
Validity: 3 years