Tetra Potassium Pyrophosphate(TKPP) - Industry Application Phosphat - China Yeyuan Chemical Raw Material Supplier - PVC - ...

Tetra Potassium Pyrophosphate(TKPP)

Molecular formula: K4P2O7

Molecular weight: 330.34

CAS Number: 7320-34-5

Standard:HG/T3591-1999

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Performance and Usage

Anhydrous tetra potassium phosphate is in white powder or granular. Relative density 2.534 g/cm3 and melting point 1109℃; 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.

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.

Quality Specification

NO	Specifications	Technical Grade
1	Appearance	White powder or granular
2	Assay % ≥	98.0
3	P₂O₅ % ≥	42
4	Iron(Fe) % ≤	0.1
5	Water insoluble matter % ≤	0.2
6	Heavy Metals,as Pb % ≤	0.003
7	Arsenic(As) % ≤	0.002
8	PH Value	9.5—10.5
9	loss on ignition % ≤	0.2
10	Pb % ≤	0.0005
11	Ortho Phosphate	Pass test