Items

Standard

Analysis data

Appearance

White powder

conforms

Transmittance

Not less than 95.0%

98.2%

Melting Point (℃)

198℃ to 201℃

200℃

Chloride (Cl)

Not more than 0.02%

0.008%

Sulfate (SO4)

Not more than 0.050%

0.005%

Iron (Fe)

Not more than 30 PPM

8ppm

Heavy Metals (Pb)

Not more than 10 PPM

<10ppm

Arsenic（As2O3）

Not more than 2 PPM

<2ppm

Loss on Drying

Not more than 0.20%

0.12%

Residue on Ignition (Sulfated)

Not more than 0.2%

0.15%

Assay

Not less than 98.0%

99.1%

Inspector:

李菊花    陈小梅

   Manager:

陈书娟

Conclusion

The product is according with standard.