Description
Sodium acid pyrophosphate is a white, water-soluble solid that serves as a buffering and chelating agent, with many applications in the food industry. When crystallized from water, it forms a hexahydrate, but it dehydrates above room temperature.
Uses
Disodium pyrophosphate is a popular leavening agent found in baking powders. In leather treatment, it can be used to remove iron stains on hides during processing.
Preparation
Disodium pyrophosphate is produced by heating sodium dihydrogen phosphate:
2 NaH2PO4 → Na2H2P2O7+ H2O
Application
Sodium Acid Pyrophosphate is a common food additive which serves more than one function.It is commonly used as:
A chemical leavening agent in baked goods.
A sequestrant/chelating agent in processed potatoes.
An emulsifying agent in cheeses and related products.
