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Disodium phosphate
Chemical formula Na2HPO4·12H2O
Molecular weight 358.14
Properties White or colorless free-flowing granular crystals,effloresscent in air,soluble in water,but non-soluble in alcohol; solution is slightly alkaline, specific gravity at 1.52,and melting point at 34.6.
Application Used as fire-preventing agent for fabric ,timber,and paper; as water softener for boilers, as food additive,buffer agent to acidty,as glaze,solder,baking powder,tanning agent,and for manufacture of pyphosphate,etc.
package: 25kg or 50kg net in plastic-woven sack with inner polythene film bag.Store in a ventilated,dry place.
Technical specifications
NO | Specifications | Industrial Grade | Food Grade |
1 | Main content %≥ | 98.0 | 98.0 |
2 | Phosphorus pentoxide %≥ | 19.4 | 19.4 |
3 | PH value of 1% solution | 8.5∼10.0 | 8.5∼10.0 |
4 | Water insoluble %≤ | 0.1 | 0.1 |
5 | Sulfate,as SO4 %≤ | 0.05 | |
6 | Chloride, as Cl %≤ | 0.014 | |
7 | Frioride,as F %≤ | 0.005 | |
8 | Heavy metal,as pb %≤ | 0.001 | |
9 | Arsenic,as As %≤ | 0.0003 |
industrial flame retardant disodium phosphate