Potassium Diphosphate

Potassium Diphosphate

Synonyms: Diphosphoric acid, tetrapotassium salt; Potassium Pyrophosphate; Tetra-Potassium Pyrophosphate; TKPP; Tetrapotassium pyrophosphate; tetrapotassium diphosphate  

Molecular Weight:   330.3365  

Molecular Formula:   K₄O₇P₂  

Melting Point(℃):   1109℃  

Water Solubility:   soluble

CAS No.: 7320-34-5  

EINECS: 230-785-7  

  

Physicochemical Properties:

White powder or block. The relative density is 2.534. The melting point is 1109°C. Soluble in water, insoluble in ethanol. The aqueous solution is alkaline. The solubility in 100g water at 25°C is 187g. The pH of 1% aqueous solution is 10.2. Potassium pyrophosphate has all the properties of other condensed phosphates.

 

Applications and Usages: 

Used for cyanide-free electroplating, dyeing, refining clay, etc.

 

Product Specification:

 

Items		Technical Grade	Food Grade
Main content (K4P2O7)	≥	95.0%	96.0%
Water insoluble matter	≤	0.2%	0.1%
Iron (Fe)	≤	0.05%	0.03%
PH value		10.0-10.7	10.0-10.7
Heavy metal (Pb)	≤	/	0.001%
Arsenic (As)	≤	/	0.0003%
Ortho Phosphate		Pass test
Appearance		White powder or granula

 

Package: 

In 25kg PE+PP bag, or according to customer's requirement.

 

 

PIC: Flora  Cao
Email: km155@kmchem.com
Whatsapp/Mobile:+86 15563229020

---

  Prev： Barium Chloride Anhydrous