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 Potassium pyrophosphate (TKPP)
Alias: potassium pyrophosphate
 Molecular formula: K4P2O7 
 MW: 330.33
 CAS No.: 7320-34-5
 
Character : White powder. The relative density is 2.534 and the melting point is 1109 centigrade, it is extremely hygroscopic and deliquescence. It can dissolve in water ,but is not soluble in ethanol. At 25 ℃, 187 grams dissolve in100 grams water.In the saturated solution,the solid matter is K4P2O7 · 3H2O.
 
Uses: Technical grade is used for non-cyanide electroplating, surface treatment, high-grade detergents, paints, cleaning agents, dispersing agents, buffer, etc. Food grade is used emulsifier in food processing, organization modifier, chelating agents, quality improver etc.
 
Quliaty standard(reference standard)
Specifications Index
classy First-rate Qualified
 (K4P2O7),% ≥ 96.0 95.0 94.0
(Fe),% ≤ 0.03 0.05 0.10
Water insoluble,% ≤ 0.10 0.20 0.25
PH(1%solution) 10.0-10.7
Phosphate As customer’s request