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Technical index
| NO. | Index name | Industrial grade | Food grade |
| 1 | Main content (Na3PO4·12H2O) %= | 98.0 | 98.0 |
| 2 | P2O5 %= | 18.3 | 18.3 |
| 3 | Sulfate(as SO4 ) %= | 0.5 | 0.2 |
| 4 | Chloride(as CI) %= | 0.3 | 0.02 |
| 5 | Water insoluble matter %= | 0.05 | 0.05 |
| 6 | Methyl orange alkalinity(as Na2O) % | 15-19 | 15-19 |
| 7 | Heavy metals (as Pb) %= | —— | 0.001 |
| 8 | As %= | —— | 0.0003 |
Chemical formula:Na3PO4·12H2O
Molecular weight:380.14
Properties:Appearance is White or colorless granular crystal,efflorescence in air, soluble in water easily but not in organic
solvent; solution is basic fluid, PH is 12.1, Relative Density 1.62, Melting point is 73.4°C.
Uses: used in water softening treatment, daily chemicals, electroplating phosphorization, color fixer in fabric dyeing, flux in
enamel and degrease of leather.
Packing: plastic lined woven bag, Net wt 25 Kg, kept in dry and ventilating place.
Trisodium Phosphate Dodecahydrate