L-Tyrosine;CAS 60-18-4,Fermentation method

Item

Specification

Appearance

White crystals or crystalline powder

Identification

Infrared Absorption

Loss on drying

≤0.3%

Residue on ignition

≤0.4%

Specific optical rotation[α] (25D)

-9.8°~ -11.2°

Heavy metals (as Pb)

≤0.0015%

Iron(Fe)

≤0.003%

Chloride (as CL)

≤0.04%

Sulphate (as SO₄)

≤0.04%

Assay(on dry basis)

98.5%-101.5%