alpha Arbutin CAS: 84380-01-8 CAS NO.84380-01-8

item

specifications

appearance

white crystalline powder

assay

≥99.5%

hydroquinone

negative

melting point

203-206±1℃

specific optical value

(a)20d=+174.0°~+186.0°

solubility

soluble in water slightly soluble in ethanol

clarity

solution should be clarify, none suspended matters

ph (1% aqueous)

5.0~7.0

loss on drying

≤0.5%

residue on ignition

≤0.5%

heaby metal

≤10ppm

lead

≤10ppm

arsenic

≤2ppm

mercury

≤1ppm

total plate count

≤100cfu/g

molds and yeast

≤50cfu/g

e.coli

negative

staphylococcus aureus

negative

salmonella

negative

p.aeruginosa

negative