White, crystalline powder that is used as a buffer, emulsifier, sequestrant, and softener water softener. Sodium pyrophosphate, or TSPP, is used in de-inking newsprint, removing stain 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
Soluble in water. Decomposes in ethanol.
|Molecular Weight||mol. wt. = 266|
Hazards and Safety
Toxic by inhalation. Contact may cause irritation.
- Richard S. Lewis, 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