White, crystalline powder that is used as a Buffer, Emulsifier, Sequestrant, and Water softener. Sodium pyrophosphate, or TSPP, is used in de-inking newsprint, removing rust stains, scouring Wool, and dyeing textiles. TSPP is also included as an ingredient in many soaps, detergents, and cleansers.
Synonyms and Related Terms
TSPP; tetrasodium pyrophosphate
- Toxic by inhalation.
- Contact may cause irritation.
- ThermoFisher: SDS
Physical and Chemical Properties
Soluble in water. Decomposes in ethanol.
|Melting Point||880 C|
|Molecular Weight||mol. wt. = 266|
Resources and Citations
- Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
- The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 9377