Item

Standard

Appearance

White crystals or crystalline powder

Assay

≥95.0%

Optical rotation

+18.5°~ +22.5°

Chloride

≤0.5%

Sulfate

≤0.2%

Heavy metals

≤20ppm

Arsenic

≤1ppm

Lead

≤3ppm

Cadmium

≤1ppm

Mercury

≤0.1ppm

Total Plate Count

≤ 1000cfu/g

Yeast & Mold

≤100cfu/g

E.Coli

Negative

Salmonella

Negative