Product Description
Name of index | BP98 | E-331(iii) |
Description | Crystalline white powder or colourless crystals | |
Content | 99.0-101.0% | ≥99.0%( anhydrous basis) |
Acidity and Alkalinity | Accord with the test | -- |
SO4,≤% | 0.015 | -- |
Heavy metals(As Pb), ≤% | 0.001 | 0.0005 |
Oxalate(As H2C2O4), ≤% | 0.03 | 0.01 |
Easy carbonify substance | Accord with the test | -- |
Chloride, ≤% | 0.005 | -- |
Loss on drying, | 11.0-13.0% | ≤13.5% |
pH value(5% aqueous solution) | -- | 7.5-9 |
Arsenic(As),≤ppm | -- | 1 |
Lead(Pb),≤ppm | -- | 1 |
Mercury(Hg),≤ppm | -- | 1 |
Product quality protection 
