Items

Standard

Analysis data

Appearance

White crystals powder 

conforms

Melting point

142~148°C

144.3°C

Specific rotation

-126°±5°

-130.6°

Iron(Fe)

Not more than 10ppm

＜10ppm

Loss on Drying

Not more than 0.50%

0.29%

Ammonium (NH4)

Not more than 0.02%

<0.02%

Sulfate (SO4)

Not more than 0.030%

<0.03%

Heavy metal(Pb)

Not more than 10ppm

<10ppm

Arsenic(As2O3)

Not more than 1ppm

 ＜ 1ppm

Assay

Not less than 98.5%

99.1%

PH

1.50-2.50

2.0

Conclusion

The product is according with standard.