Item

Standard

Analysis data

appearance

white crystalline powder

conforms

chloride(Cl)

Not more than 0.02%

＜0.02%

sulfate (SO4)

Not more than 0.02%

＜0.02%

Heavy mental (Pb)

Not more than 0.001%

＜0.001%

Loss on drying

Not more than 0.30%

0.17%

Residue on ignition

Not more than 0.10%

0.07%

arsenic

Not more than 0.0001%

＜0.0001%

assay

98.5%~101.5%

100.14%

pH

5.4~6.1

5.88

conclusion

The product is according with standard.