a- 熊果苷

Items

Standards

Appearance

White crystals or crystalline powder

Specific rotation

+174.0° ~ +186.0°

Assay

≥99.0%

Loss on drying

≤0.5%

Ignition residue

≤0.5%

PH value (1% solution)

5.0 - 7.0

Clarity of 1% water solution

Transparent, colorless

Melting point

202.0~212.0℃

Hydroquinone

None

Heavy metals (as Pb)

≤10 ppm

Arsenic

≤2 ppm

Mercury

≤1 ppm

Methanol

≤2000 ppm

Total bacterial count

≤1000 CFU/g

Mold & Yeast

≤100 CFU/g

Fecal coliforms

Negative

Pseudomonas aeruginosa

Negative

Staphylococcus aureus

Negative