Tetra potassium pyrophosphate

Molecular formula: K4P2O7

Molecular weight: 330.336522

CAS NO.：7320-34-5

EINECS NO.: 230-785-7

Melting point: 1109 ° C

Boiling point: 1482 ° C

Water soluble: soluble in water, insoluble in ethanol

Appearance: White powder or massive solid

Tetra potassium pyrophosphate is an inorganic substance with molecular formula of k4p2o7 and molecular weight of 330.33. It is white powder or block, soluble in water and insoluble in ethanol. The aqueous solution is alkaline. At 25 ℃, the solubility of 100g water is 187G. [1-2]

Tetra potassium pyrophosphate is mainly used to replace potassium cyanide for cyanide free electroplating. With the development of national industrial modernization, the demand for potassium pyrophosphate is increasing day by day. In industry, it is also used for surface treatment, high-grade detergent, paint, detergent, dispersant, buffer, etc; Food industry is used as emulsifier, tissue modifier, chelating agent, quality improver, etc. Potassium pyrophosphate can also be prepared from dipotassium hydrogen phosphate.

Executive standard of electroplating grade potassium pyrophosphate: Hg / T 3591-1999

Executive standard of industrial potassium pyrophosphate: ZB / TG 12006-88

Application of Tetra potassium pyrophosphate:

Used for cyanide free electroplating, dyeing, refining clay, etc;

1. It is mainly used for cyanide free electroplating, instead of sodium cyanide as the complexing agent of electroplating. It is also used as pretreatment agent for electroplating and pyrophosphoric acid electroplating solution. Prepare detergent components for clothing materials, metal surface cleaning agent and bottle cleaning agent components, and additives of various cleaning agents. It is used as clay dispersant, dispersant and buffer of pigments and dyes in ceramic industry. Bleaching and dyeing industry is used to remove a small amount of ferric ions in water and improve bleaching and dyeing quality. Potassium pyrophosphate is also an excellent stabilizer for hydrogen peroxide.

2.It is used as emulsifier, tissue modifier and chelating agent in food industry. It is also used as raw material of alkaline water for flour products. It is often used together with other condensed phosphates to prevent guano stone from being produced in canned aquatic products and discoloration of canned fruits; Improve the expansion of ice cream, the yield of ham and sausage, and the water holding capacity of ground fish; Improve the flavor and yield of noodles, prevent cheese aging, etc.

3. It can also be used as complexing agent for alkaline electroless nickel plating and for preparing detergent. Pyrophosphate can also be used as complexing agent for alkaline nickel plating.

Packing: 25kg inner plastic and outer woven bags or as required by customers.

Storage and transportation: store in a dry and clean warehouse. Pay attention to moisture and rain. It shall be stored separately from inflammables or combustibles and acids. Pay attention to personal protection during sub packaging and handling. Handle with care to prevent package damage. It is not suitable for transportation in rainy days.

Usage: mainly used for cyanide free electroplating, instead of sodium cyanide as the complexing agent of electroplating. It is also used as pretreatment agent for electroplating and pyrophosphoric acid electroplating solution. Prepare detergent components for clothing materials, metal surface cleaning agent and bottle cleaning agent components, and additives of various cleaning agents. It is used as clay dispersant, dispersant and buffer of pigments and dyes in ceramic industry. Bleaching and dyeing industry is used to remove a small amount of ferric ions in water and improve bleaching and dyeing quality.

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