Tetrasodium pyrophosphate or TKPP, is a colorless transparent crystalline chemical compound with the formula Na4P2O7. It contains the pyrophosphate ion and sodium cation. Toxicity is approximately twice that of table salt when ingested orally. There is also a hydrated form, Na4P2O7.10(H2O). It is mainly used in non cyanogen electroplating, As a Complexing agent for electroplating to substitute sodium Cyanide in Ludhiana, Electroplating pre-treatment agent and electroplating solution of Pyrophosphate, used as components of detergents for cloth, cleaning agents for metal surfaces and cleaners for bottles, clay dispersant in ceramic industry, and for Pigment and dye dispersant and buffer. In the dyeing industry to remove a small amount of Fe 3 + in order to improve the quality of dyeing.

Tetrasodium pyrophosphate or TKPP, is a colorless transparent crystalline chemical compound with the formula Na4P2O7. It contains the pyrophosphate ion and sodium cation. Toxicity is approximately twice that of table salt when ingested orally. There is also a hydrated form, Na4P2O7.10(H2O). It is mainly used in non cyanogen electroplating, As a Complexing agent for electroplating to substitute sodium Cyanide in Ludhiana, Electroplating pre-treatment agent and electroplating solution of Pyrophosphate, used as components of detergents for cloth, cleaning agents for metal surfaces and cleaners for bottles, clay dispersant in ceramic industry, and for Pigment and dye dispersant and buffer. In the dyeing industry to remove a small amount of Fe 3 + in order to improve the quality of dyeing.