Test items

In-house Standard

Description

White crystals or crystalline powder

Specific rotation

+17.0°~ +19.0°

Solubility

Freely soluble in formic acid and water, very slightly soluble in ethanol, practically insoluble in ether.

Chloride

≤0.05%

Iron

≤10ppm

Arsenic

≤0.5ppm

Heavy metals

≤10ppm

Lead

≤1ppm

Mercury

≤0.1ppm

Cadmium

≤0.5ppm

Loss on drying

≤0.20%

Residue on ignition

≤0.10%

L- Citrulline

62.5%~74.2%

DL-Malic acid

26.4%~36.4%

Aerobic Plate Count

≤1000CFU/g

Yeast&moulds

≤100 CFU/g

E. coli

Negative

Coliforms

Negative