Shanghai Honghao Chemical Co.,Ltd.

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Model Number

497-76-7

Arbutin	II(Q/XXHG02-2002)	III(Q/XXHG03-2002)
Appearance	White needle crystal or powder	white needle crystal
Assay	≥99%	≥99.5%
Melting point(°C)	199 ~ 201(±0.5)	199 ~ 202(±0.5)
pH value	5.0~7.0(1%aqueous solution)
Heavy metal	<10ppm	<10ppm
Clarity of water solution	Transparency, colorless, none suspended matters
Specific optical rotation	-63~-67
Infrared signature peak	1515cm^-1 1220cm^-1 1050±(5~8)cm^-1
Arsenic	<2 ppm	<2 ppm
Loss on drying	<0.5%	<0.5%
Hydroquinone	<20ppm	<10ppm
Pathogen	Bacteria count<300CPU Fungus<100CPU