ITEM

STANDARD

Appearance

White Crystalline Powder

Assay (on dry matter)

98.5-101.5%

Clarity of Solution

Clear, colorless

Transmittance

≥98.0%

PH Value(1g/100ml in water)

5.4-6.1

Chloride(As Cl)

 ≤0.05%

Heavy Metals(As Pb)

 ≤0.002%

Lead (As Pb)

 ≤0.001%

Arsenic (As AS)

 ≤0.00015%

Sulfate(SO4)

 ≤0.02%

Ammonium( As NH4)

 ≤0.01%

Loss on drying

 ≤0.5%

Residue on ignition(as sulphate ash)

 ≤0.1%