ITEM | STANDARD |
ASSAY (Na5P3O10) | ≥95 |
APPEARANCE | WHITE GRANULAR |
P2O5 | ≥ 57.0 |
FLUORIDE (PPM) | ≤ 10 |
CADMIUM (PPM) | ≤1 |
LEAD (PPM) | ≤4 |
MERCURY (PPM) | ≤1 |
ARSENIC (PPM) | ≤3 |
HEAVY MENTAL (AS PB) (PPM) | ≤10 |
CHLORIDES (AS CL) | ≤0.025 % |
SULPHATES (SO42-) | ≤0.4 % |
SUBSTANCES NOT DISSOLVED IN WATER | ≤0.05 % |
PH VALUE | 9.5% - 10.0% |
LOSS ON DRYING | ≤0.7% |
HEXAHYDRATE | ≤23.5% |
WATER-INSOLUBLE SUBSTANCES | ≤0.1% |
HIGHER POLYPHOSPHATES | ≤1% |