Introduction
Sodium pyrophosphate (SPP) also known as tetrasodium pyrophosphate is a common chemical that is present in a number of products that we consume everyday. When pure SPP is a colorless transparent crystalline chemical compound with a formula Na4P2O7 . The molecular weight 265.902g/mol and has a melting point of 988 K. Characteristic spectrum to assess purity can be obtained from analytical measurements like IR and PNMR (Windholz, 1976). The salt of pyrophosphate and sodium item as is twice that of table salt when ingested orally (Sigma Aldrich) so it is fairly non-toxic to humans. It has been used as a Continue reading...
