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Disodium pytophosphate

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Disodium pytophosphate Basic information
Disodium pytophosphate Chemical Properties
  • Melting point:decomposes 220℃ [MER06]
  • Density (hexahydrate) 1.86
  • storage temp. −70°C
  • solubility H2O: 0.1 M at 20 °C, clear, colorless
  • form white powder
  • PH3.5-4.5 (20℃, 0.1M in H2O, freshly prepared)
  • Water Solubility Fully miscible in water. Insoluble in alcohol and ammonia.
  • λmaxλ: 260 nm Amax: 0.11
    λ: 280 nm Amax: 0.09
  • Merck 13,8643
  • Stability:Stable.
  • CAS DataBase Reference7758-16-9(CAS DataBase Reference)
  • EPA Substance Registry SystemDisodium diphosphate (7758-16-9)
Safety Information
MSDS
Disodium pytophosphate Usage And Synthesis
  • Chemical Propertieswhite powder
  • UsesChiefly in baking powders.
  • UsesSodium Pyrophosphate is a leavening agent, preservative, sequestrant, and buffer which is mildly acidic with a ph of 4.1. It is moderately soluble in water, with a solubility of 15 g in 100 ml at 25°c. It is used in doughnuts and biscuits for its variable gas release rate during the mixing, bench action, and baking process. It is used in baking powder as a leavening agent. It is used in canned fish products to reduce the level of undesired struvite crystals (magnesium ammonium phosphate hexahydrate) by complexing the magnesium. It is used to sequester metals in processed potatoes. It is also termed sapp, sodium acid pyrophosphate, acid sodium pyrophosphate, disodium diphosphate, and disodium dihydrogen pyrophosphate.
  • Safety ProfilePoison by intravenous route. Moderately toxic by ingestion and subcutaneous routes. An irritant to skin, eyes, and mucous membranes. When heated to decomposition it emits toxic fumes of POx, and Na2O.
Disodium pytophosphate Preparation Products And Raw materials
Disodium pytophosphate (7758-16-9)Related Product Information
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