Item

Standard

Analysis data

Appearance

White crystals or crystalline powder

conforms

Specific rotation[α]20/D

-11.8 to -12.8°

-11.83°

State of solution

(Transmittance)

Not less than 95.0%

97.9%

Chloride (Cl)

Not more than 0.10%

0.015%

Heavy metal(Pb)

Not more than 10ppm

<10ppm

Arsenic(As2O3)

Not more than 2ppm

<2ppm

Loss on drying

Not more than 0.20%

0.2%

Residue on ignition(sulfated)

Not more than 0.2%

0.085%

Assay

98.0 to101.0%

98.8%

Conclusion

The product conforms to the standard.