Tetrapotassium pyrophosphate

Synonyms

Diphosphoric acid, potassium salt (1:4); Diphosphoric acid, tetrapotassium salt; Potassium diphosphate; Potassium pyrophosphate; Pyrophosphoric acid, tetrapotassium salt; Tetrapotassium diphosphate; Tetrapotassium diphosphorate; TKPP; [ChemIDplus] Difosfato tetrapot'asico; SEL TETRAPOTASSIQUE DE L'ACIDE DIPHOSPHORIQUE; [IUCLID] Potassium pyrophosphate, anhydrous; [Alfa Aesar MSDS]

Category

Phosphates, Metallic Salts

Description

Trihydrate: Colorless deliquescent solid; [Merck Index] White odorless solid; Hygroscopic; [ICSC] White hygroscopic powder or granules; [Alfa Aesar MSDS]

Sources/Uses

Used in detergents and surfactants, water treatment, and as a clay thinner in drilling muds; [Merck Index] Used in the chemical and personal-domestic use industries, as a food additive, cleaning/washing agent, disinfectant, and in pharmaceuticals; [IUCLID] Used in tin plating, stabilizing hydrogen peroxide baths, purification of chin clay, oil drilling muds, soaps and detergents (sequesters magnesium), peptizing curds of calcium soap, building/clarifying of liquid soaps in synthetic rubber production, as an iron sequestrant, peptizer in latex paints, in ultra high pressure boiler water treatment, and as an emulsifier and texturizer in foods; [EPA OHM/TADS] Permitted for use as an inert ingredient in non-food pesticide products; [EPA]

Comments

Causes somnolence and gastrointestinal changes in oral lethal-dose studies of rats; Causes changes in renal tubules and weight loss in 13-week oral studies of rats; [RTECS] Causes burns; Inhalation of aerosol may cause pulmonary edema; [ICSC] A skin and strong eye irritant; [Alfa Aesar MSDS] See "Potassium phosphate, tribasic," "Potassium phosphate, dibasic," "Potassium metaphosphate," and "Pentapotassium triphosphate."

Biomedical References

Yes

Skin burns

Processes

Industrial Processes with risk of exposure:

• Electroplating
• Painting (Pigments, Binders, and Biocides)
• Petroleum Production and Refining
• Sewer and Wastewater Treatment
• Using Disinfectants or Biocides