Other names for the additive (synonyms)
General Information
Food additive E450(ii) is trisodium diphosphate (tetrasodium diphosphate), one of the compounds from the pyrophosphate group, collectively designated as additive E450. This subtype is an inorganic compound composed of two phosphate groups and four sodium ions. It is produced synthetically by reacting phosphoric acid with sodium carbonate or sodium hydroxide.
In industry, tetrasodium diphosphate appears as a white crystalline powder, readily soluble in water, and without odor or taste. The chemical formula of the substance is Na₃HP₂O₇.
Sodium monohydrogen pyrophosphate, like other pyrophosphates, is widely used as a stabilizer, emulsifier, and water-binding agent in meat processing. Additive E450(ii) helps preserve the structure and moisture of sausages, ham, and frozen meat, and also improves the texture of cheese and the leavening of dough in baked goods.
Compared to E450(i), tetrasodium diphosphate has higher alkalinity and is therefore more commonly used where regulation of pH or improved protein solubility is required.
More information on health effects, scientific research findings, and legal status can be found in the general description of additive E450.
