| ITEMS |
Specifications |
| Appearance |
White crystals or crystalline powder |
| Assay. % |
98.5~101.5 |
| Identification |
Positive |
| Transmittance, % |
>=98 |
| pH |
5.5~6.5 |
| Heavy metal(as Pb),ppm |
=<20 |
| Loss on drying, % |
=<0.20 |
| Residue on ignition, % |
=<0.1 |
| Chioride(as Cl), % |
=<0.007 |
| Sulphate(as SO4), % |
=<0.0065 |
| Iron(as Fe), % |
=<10 |
| Pb ppm |
=<1 |
| Ammonium(as NH4), % |
=<0.01 |
| Arsenic(as As) ppm |
=<1 |
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