Item

Specification

Results

Appearance

White crystalline powder

White crystalline

Assay

99.0%Min 

99.90%

Melting  point

203~206±1°C

204.9-206.0

Clarity of water solution

Transpency, colorless, none suspended matters

Pass 

pH value of 1% aqueous solution

5.0~7.0

6.45

                 Specific optical ratation

[α]D20=+176~184º

+179.4 

Arsenic

≤2 ppm

pass

Hydroquinone

≤10 ppm

pass

Heavy metal

≤10 ppm

pass

Loss on drying

≤0.5%

0.05%

Ignition  residue

≤0.5%

0.05%

Pathogen

Bacteria≤300cfu/g

Fungus≤100cfu/g

<20

<20

Conclusion

pass

Product Name

Arbutin

Mol

C12H16O7 / 272.25

CAS NO.:

497-76-7

Purity

90%

Specification

90% by HPLC extracted from Arbutus leaf

Characteristics

White needle crystalline or fine powder

Effects

1. To reduce inflammation and resist irritations;2. Skin shinning

Application

Top level cosmetics, creams

Dosage

-

Storage

Please keep it away from direct light, and wet. 2 years shelf life

Package

25KG/fiber drum