alpha arbutin cas 84380-01-8

Item Specification Results

Appearance White crystalline powder

Assay :  99.90%

Melting  point 2: 204.6-205.8

Clarity of water solution Transpency, colorless, none suspended matters Pass 

pH value of 1% aqueous solution: 6.05

Specific optical ratation D20=+176~184degree +179.5 

Hydroquinone 10 ppm max pass

Heavy metal 10 ppm max pass

Loss on drying 0.5% max 0.05%

Ignition  residue 0.5% max 0.04%

Pathogen Bacteria:300cfu/g max

Fungus:100cfu/g max 20  20

 

 

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