Shifang Tianrui Chemical Co.,Ltd.

Tetrapotassium Pyrophsophate

• Category :

  Inorganic chemicals

• Synonyms :

  Diphosphoric acid, tetrapotassium salt;Potassium Pyrophosphate;Tetra-Potassium Pyrophosphate;TKPP;Tetrapotassium pyrophosphate;tetrapotassium diphosphate;diphosphoric acid, monopotassium salt;Tetra Potassium Pyrophosphate;

• CAS NO :

  7320-34-5

• EC NO :

  230-785-7

• Molecular Formula :

  K₄O₇P₂

• Molecular Weight :

  330.336522

• Main Specifications :

  white powder, main content: 95.0%min

• InChI :

  InChI=1/4K.H4O7P2/c;;;;1-8(2,3)7-9(4,5)6/h;;;;(H2,1,2,3)(H2,4,5,6)/q4*+1;/p-4

• Packing :

  packed in plastic woven bag with PE lining, 25kgs/bag

• Product description :

  Chemical formula: K₄P₂O₇
  Molecular weight: 330.34
  CAS NO.: 7320-34-5
  Ref. Standard: HG/T3591-1999
  production capacity:3000 t/a
  Properties: 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°C, its solubility in water is 187g/100g water; It can chelate with alkaline metals ions or heavy metal ions.
  Technical Specifications:

  No.	Index	Industrial grade	Food grade
  1	Main content ,as K4P2O7 %≥	95.0	96.0
  2	Iron, as Fe   %≤	0.05	0.03
  3	Water insoluble  %≤	0.2	0.1
  4	pH of 1% water solution	10.0-10.7	10.0-10.7
  5	Heavy metal, as Pb   %≤	-	0.001
  6	Arsenic, as As  %≤	-	0.0003
  7	Ortho Phosphate	Pass test	Pass test

• Uses :

  For food grade, it can be used as food additive,etc.For industrial grade, can be use as buffering reagent,etc

• Molecular Structure :