Disodium Dihydrogen Pyrophosphate
While Disodium dihydrogen pyrophosphate sounds like a very suspicious additive, in fact it is very harmless and acts in the product as a sequestrant, which means that it binds to minerals in the food, such as iron, to prevent discoloration. Anyone who has cut a potato and, therefore, exposed it to air, has seen the graying of the exposed potato. A sequestrant such as disodium dihydrogen pyrophosphate stops this type of discoloration. Citric acid, another more familiar ingredient, is another example of a sequestrant and can often be used instead of disodium dihydrogen pyrophosphate.