What is the disodium pyrophosphate? Why add food?

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Phosphorus are consistent with several acids, where it exhibits the highest oxidation state +5 : Nros - metaphosphoric, НзРО4 - phosphoric, Н4Р2О7 - pyrophosphoric acid. Are you interested in the latest chetyrehosnyj Diaspora or pyrophosphoric acid, or rather duhsasana sodium salt Na2H2P2O7 - disodium pyrophosphate, known as a food additive-emulsifier Е450І. Used in the food industry, to the emulsion, consisting of two insoluble in each other liquids were stable over time and were not divided into two factions, for example, water and vegetable oil.\r\n\r\Pat salt is applied in very small quantities and are considered harmless. The maximum permissible rate of 70 mg/kg of body weight.
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