Product name: β-Arbutin

CAS number: 497-76-7

Expiry Year: Two years

Analysis Items

Specifications

Active Ingredients Tests

β-Arbutin(HPLC)

≥99.50%

Hydroquinone

≤10.0ppm

Physical Tests

Appearance

White crystals powder

Odor

Characteristic

Taste

Characteristic

pH value (1% solution)

5.0-7.0

Melting Point

198.5~201.5 ℃

Specific Optical Rotation

[a]D20=-62˚-68.0˚

Loss on drying

≤0.5%

Residue on Ignition

≤0.5%

Acid-insoluble ash

≤0.5%

Chemical Tests

Heavy Metals

≤10.0ppm

As

≤2.0ppm

Pb

≤1.0ppm

Hg

≤0.1ppm

Microbiological Tests

Total Bacteria Count

≤1000cfu/g

Yeast and Mold

≤100cfu/g

Coli Group

≤3.0MPN/g

E.Coli

Negative in 1g

Salmonella

Negative in 10g

Conclusion: Conform to above specification