Specifications

Basic information

Potassium pyrophosphate (Potassium Diphosphate), is an inorganic, molecular formula K4P2O7, molecular weight of 330.33, white powder or block, soluble in water, insoluble in ethanol. The aqueous solution is alkaline. The solubility in 100g of water at 25°C is 187g.
 
The main purpose of potassium pyrophosphate is to replace potassium cyanide for cyanide-free electroplating. With the development of national industrial modernization, the demand for potassium pyrophosphate is increasing. Industry is also used for surface treatment, high-grade detergents, paint coatings, cleaning agents, dispersants, buffers, etc.; the food industry is used as an emulsifier, tissue improver, chelating agent, quality improver, etc. Potassium pyrophosphate can also be prepared from dipotassium hydrogen phosphate.

Application areas

Industry for cyanide-free plating, surface treatment, high-grade detergents, paint coatings, cleaning agents, dispersants, buffers, etc.; food-grade emulsifiers for food processing, tissue improvers, chelating agents, quality improvers, etc.
 
1 Mainly used for cyanide-free plating, instead of sodium cyanide as a complexing agent for plating. It is also used as a pretreatment agent for electroplating and a pyrophosphoric acid plating solution. Preparation of detergent components for clothing, metal surface cleaning agent and bottle cleaning agent components, additives for various cleaning agents. Used as a clay dispersant for the ceramic industry, a dispersant and a buffer for pigments and dyes. The bleaching and dyeing industry is used to remove a small amount of trivalent iron ions in water and improve the quality of bleaching and dyeing. Potassium pyrophosphate is also an excellent stabilizer of hydrogen peroxide.
 
2 In the food industry as an emulsifier, tissue improver, chelating agent, but also as a raw material for alkaline water for flour products. It is usually used in combination with other condensed phosphates to prevent the production of struvite in canned aquatic products and prevent the discoloration of canned fruits. Improve the expansion of ice cream, the yield of ham and sausage, the water holding capacity of ground fish; Improve the taste of noodles and increase the yield, prevent cheese from aging, etc.
 
3. Potassium pyrophosphate can also be used as a complexing agent for alkaline electroless nickel plating and for the formulation of detergents. Pyrophosphates can also be used as complexing agents for alkaline nickel plating.

Packaging, transportation and safety