Item

Standard

Appearance

White powder

Specific rotation[α]20/D

(C=2 in acetic acid)

+52 to +65 Degree

Transmittance

Not less than 95.0%

Heavy metal(Pb)

Not more than 20ppm

Arsenic(As2O3)

Not more than 2ppm

Loss on drying

Not more than 0.10%

Residue on ignition

Not more than 0.30%

Assay

98.0to102.0%