Description

性狀

White or almost white crystalline powder

白色或類白色結晶性粉末

Complies

符合規(guī)定

Melting point

熔點

Not less than 300.0℃

≥300.0℃

Complies

符合規(guī)定

Loss on drying

干燥失重

Not more than 0.5%

≤0.5%

0.2%

Chloride

氯化物

Not more than 0.01%

≤0.01%

Complies

符合規(guī)定

Sulfate

硫酸鹽

Not more than 0.04%

≤0.04%

Complies

符合規(guī)定

Residue on ignition

熾灼殘渣

Not more than 0.10%

≤0.10%

0.04%

Heavy metals

*

Not more than 0.001%

≤0.001%

Complies

符合規(guī)定

Assay

含量

Not less than 99.5%

≥99.5%

99.9%