Items

Standard

Appearance

White powder

Specific Rotation [20/D]

(C=4 in methanol)

-22.0 to -26.0

State of Solution (Transmittance)

Not less than 95.0%

Heavy Metals (Pb)

Not more than 20 PPM

Arsenic (As2O3)

Not more than 2 PPM

Loss on Drying

Not more than 0.50%

Residue on Ignition

Not more than 0.3%

Assay

97.5% to 102.5%