Grade I | Grade II | ||
---|---|---|---|
Moisture | % max | 0.50 | 1.00 |
Amm. Chloride as NH4Cl | % max. | 99.50 | 98.50 |
Iron, as Fe | % max. | 0.01 | 0.01 |
Sulphate, as (NH4)2SO4 | % max. | 0.10 | 0.30 |
Total sulphated residue | % max. | 0.30 | - |
pH | % max. | 4.50-5.80 | 4.00-5.80 |
Matter insoluble | % max. | 0.10 | 0.20 |
Heavy metals including iron, as Pb | ppm max | - | - |
Arsenic, as As2O3 | ppm max | - | - |
Other chlorides, as NaCl | %max | - | - |