1.characters:

Tetra Potassium Pyrophosphate

Byname: tetrapotassium pyrophosphate ,TKPP 
Molecular Formula: K4P2O7 
Molecular weight: 330.34 
Standard executed: HG/T3591-1999
Appearance:white powder

2.properties:

Anhydrous tetra potassium phosphate is in white powder or granular. Relative density 2.534 and melting point 1109°c. It is apt to absorb humidity in the open air to deliquescent. Solubility in water is 187g/100g water. It can chelate with alkaline metals ions or heavy metal ions.

3.Applications:

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 used as dispersion agent for ceramic , clay, latex and pigments.

4.Specifications:

Item	Standard	Typical Value
Appearance	White powder	White powder
Purity %	98.0min	98.1 min
(CAI) ml (1% AgNO3)	2.50min	3.00min
Fe %	0.005max	0.005max
Pb %	0.0005 max	0.0003max
As %	0.0002 max	0.0002max
Insoluble Substances %	0.1 max	0.1 max
pH1%water solution	10.5±0.5	10.5±0.1
Loss on dry %	0.5max	0.5max