Molecular formula: Na3PO4.12H2O
Property: Colorless of white crystal. Relative density 1.62(20°C), melting point 73.3-76.7°C(decomposition). Dissolve in water, effloresces easily in the dried air. The aqueous solution can corrode skin, doesn't dissolve in ethanol (CH3CH2OH) and carbon disulfide(CS2)
Uses: As water softener, detergent boiler scale inhibitor for chemical industry, textile industry, printing and dyeing, Papermaking and generating electricity, Also can decontaminate, prevent metal corrosion and rust.
Package: 25kg in plastic paper bag.
No. of standard: HG/T 2517-1993
Item | Specifications | ||
Supper class | First class | Qualified | |
Na3PO4.12H2O, % ≥ | 98.5 | 98.0 | 95.0 |
Alkalinity of methyl orange (Na2O), % | 16.5-19.0 | 16.0-19.0 | 15.5-19.0 |
Water insoluble, % ≤ | 0.05 | 0.10 | |
Sulfate (SO42-), % ≤ | 0.50 | 0.80 | |
Chloride(Cl-), % ≤ | 0.30 | 0.40 | 0.50 |
Iron (Fe), ≤ | 0.01 | - | - |
Arsenic (As), % ≤ | 0.005 | - | - |
Appearance | White or light yellow crystal |
Trisodium phosphate