Molecular formula: K4P2O7 Molecular weight: 330. 34 Standard executed: HG/T3591-1999 Properties: Anhydrous tetra potassium phosphate is in white powder. Relative density 2. 3534 and melting point 1109 C; It is apt to absorb humidity in the open air to deliquescent; Soluble in water but insoluble in ethanol, and at 25, its solubility in water is 187g/100g water; It can chelate with alkaline metals ions or heavy metal ions. Uses: It mainly applied to electroplating without cyanate, industrial or household detergents; It can used as a buffering reagent as well as stabilizer for hydrogen peroxide; It can also be used as dispersion agent for ceramic, clay, latex and pigments etc. Packing and storage: I Packed in 25 Kg, 50 Kg or 1000 Kg net bags. It must be stored in places well ventilated and dry. Guaranteed Technical Specifications: NO Indexes Super Grade 1st Grade Food Grade 1 Appearance White powder or lumps 2 Assay% min 96.0 95.0 96.0 3 Iron(Fe) % max 0.03 0.05 0.03 4 Water insoluble matter % max 0.1 0.2 0.1 5 Heavy Metals(as Pb)% max 0.001 6 Arsenic(As)% max 0.0003 7 PH Value 10.0-10.7 8 Ortho Phosphate Pass test