Difference between revisions of "Sodium pyrophosphate"
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== Description == | == Description == | ||
| − | White, crystalline powder that is used as a [http://cameo.mfa.org/materials/fullrecord.asp?name=buffer buffer], [http://cameo.mfa.org/materials/fullrecord.asp?name=emulsifier emulsifier], [http://cameo.mfa.org/materials/fullrecord.asp?name=sequestrant sequestrant], and [http://cameo.mfa.org/materials/fullrecord.asp?name=water | + | White, crystalline powder that is used as a [http://cameo.mfa.org/materials/fullrecord.asp?name=buffer buffer], [http://cameo.mfa.org/materials/fullrecord.asp?name=emulsifier emulsifier], [http://cameo.mfa.org/materials/fullrecord.asp?name=sequestrant sequestrant], and [http://cameo.mfa.org/materials/fullrecord.asp?name=water%20softener water softener]. Sodium pyrophosphate, or TSPP, is used in de-inking newsprint, removing [http://cameo.mfa.org/materials/fullrecord.asp?name=iron%20stain rust stains], scouring [http://cameo.mfa.org/materials/fullrecord.asp?name=wool wool], and dyeing [http://cameo.mfa.org/materials/fullrecord.asp?name=textile textiles]. TSPP is also included as an ingredient in many [http://cameo.mfa.org/materials/fullrecord.asp?name=soap soaps], [http://cameo.mfa.org/materials/fullrecord.asp?name=detergent detergents], and [http://cameo.mfa.org/materials/fullrecord.asp?name=cleanser cleansers]. |
== Synonyms and Related Terms == | == Synonyms and Related Terms == | ||
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== Authority == | == Authority == | ||
| − | * | + | * 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 | * ''The Merck Index'', Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 9377 | ||
Revision as of 06:30, 24 July 2013
Description
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
Other Properties
Soluble in water. Decomposes in ethanol.
| Composition | Na4P2O7 |
|---|---|
| CAS | 7722-88-5 |
| Melting Point | 880 |
| Density | 2.45 |
| Molecular Weight | mol. wt. = 266 |
Hazards and Safety
Toxic by inhalation. Contact may cause irritation.
LINK: International Chemical Safety Card
Authority
- 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