Sodium acid pyrophosphate
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Description
White, crystalline powder. Sodium acid pyrophosphate, SAPP, is used as a mold inhibitor in paper (Roberts and Etherington 1982). It is also used as a buffer, and sequestrant. SAPP is used as an ingredient in baking powders and metal cleaners.
Synonyms and Related Terms
SAPP; disodium dihydrogen pyrophosphate; disodium pyrophosphate
Risks
- EChemi: SDS
Physical and Chemical Properties
Soluble in water.
| Composition | Na2H2P2O7 - 6H2O |
|---|---|
| Melting Point | 220 C (dec) |
| Density | 1.862 g/ml |
Resources and Citations
- M.Roberts, D.Etherington, Bookbinding and the Conservation of Books: a Dictionary of Descriptive Terminology, U.S. Government Printing Office, Washington, DC, 1982.