Items L-Isoleucine

Standard

Appearance

White crystals or crystalline powder

Assay, %

98.5-101.5

PH

5.5-7.0

Specific rotation

+38.9°~ +41.8°

Loss on drying, %

≤0.30

Residue on ignition, %

≤0.30

Chloride

≤500ppm

Sulfate

≤300ppm

Heavy metals

≤15ppm

Iron

≤30ppm

Total plate count

≤2000cfu/g

Yeast and Molds

≤100cfu/g

E.Coli

≤30MPN/g

Salmonella

Negative in 10g

Yeast and Molds

≤100cfu/g

E.Coli

Negative in 10g

Salmonella

Negative in 10g