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Pyrophosphate
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==As a food additive==<!-- linked from redirect [[E450 (food additive)]] --> Various diphosphates are used as [[emulsifier]]s, [[stabiliser (food)|stabiliser]]s, [[acidity regulator]]s, [[raising agent]]s, [[sequestrant]]s, and [[water retention agent]]s in food processing.<ref>''[[Codex Alimentarius]]'' '''1A''', 2nd ed, 1995, pp. 71, 82, 91</ref> They are classified in the [[E number]] scheme under E450:<ref>D. J. Jukes, ''Food Legislation of the UK: A Concise Guide'', Elsevier, 2013, p. 60β61</ref> *E450(a): [[disodium pyrophosphate|''di''sodium dihydrogen diphosphate]]; ''tri''sodium diphosphate; [[tetrasodium pyrophosphate|''tetra''sodium diphosphate]] (TSPP); tetrapotassium diphosphate *E450(b): ''penta''sodium and ''penta''potassium triphosphate *E450(c): sodium and potassium polyphosphates In particular, various formulations of diphosphates are used to stabilize [[whipped cream]].<ref>Ricardo A. Molins, ''Phosphates in Food'', p. 115</ref>
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