Trisodium diphosphate

Trisodium diphosphate is a sodium salt of pyrophosphoric acid. It is a white, crystalline powder that is soluble in water. It is produced industrially by heating disodium phosphate.

Trisodium diphosphate acts as an acidity regulator, emulsifier, and stabiliser in food products. It helps to prevent separation in processed cheeses and can improve the texture of baked goods and canned meats. It is commonly found in processed meats, baked goods, and dairy products.

Trisodium diphosphate is an authorised food additive in Great Britain, listed on the Register of Food Additive Authorisations. European food safety authorities have evaluated it, and it has an established acceptable daily intake (ADI). At typical consumption levels, it is not considered to pose a health risk. Some research has explored the potential impact of high phosphate intake on bone health, but evidence at typical dietary levels from food additives is generally considered reassuring by regulatory bodies.