| ≥1 piece |
beta arbutin CAS 497-76-7 β- arbutin
Appearance: White needle crystal or powder
Melting Point: 199-201
Clarity of water solution: Transparency colorless, none suspended matters
PH Value of 1% Aqueous Solution: 5.0-7.0
Specific Optical Rotation: [a] 20 -65.00
Heavy Metals: 10PPM max
Infrared peak Value: 1512cm-11219cm-11049cm-1/SUP> (5-7) cm-1
Arsenic: 2PPM max
Loss on Drying: 0.5% max
Residue on Ignition: 0.5% max
Assay (HPLC) 99.5% min