Tetrasodium Pyrophosphate

Tetrasodium pyrophosphate, also called sodium pyrophosphate, tetrasodium phosphate or TSPP, is a salt composed of pyrophosphate and sodium ions. It is a colorless and transparent crystalline chemical compound. It toxicity is approximately twice that of table salt when ingested orally.

Tetrasodium pyrophosphate is used as a buffering agent, an emulsifier, a dispersing agent, and a thickening agent, and is often used as a food additive. Common foods containing tetrasodium pyrophosphate include chicken nuggets, marshmallows, pudding, crab meat, imitation crab, canned tuna, soy-based meat alternatives, cat foods and cat treats where it is used as a palatability enhancer.

In toothpaste and dental floss, tetrasodium pyrophosphate acts as a tartar control agent, serving to remove calcium and magnesium from saliva and thus preventing them from being deposited on teeth.

Tetrasodium pyrophosphate is used in commercial dental rinses before brushing to aid in plaque reduction. It is sometimes used in household detergents to prevent similar deposition on clothing.

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