Disodium pyrophosphate
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| Disodium pyrophosphate | |
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| Image:Disodium pyrophosphate.jpg | |
| General | |
| Other names | Diphosphoric acid, disodium salt, Disodium dihydrogen pyrophosphate, Disodium diphosphate Sodium Acid Pyrophosphate |
| Molecular formula | Na2H2P2O7 |
| Molar mass | 221.93874 g/mol |
| Appearance | white odorless powder |
| Crystal structure | ? |
| CAS number | [7758-16-9] |
| Properties | |
| Density and phase | 1.1-1.3 g/ml (50 taps), solid |
| Solubility | soluble in water (11.9 g per 100 g water at 20 deg C) |
| Melting point | Melts above 600 deg C |
| Boiling point | ? |
| Hazards | |
| EU classification | EINECS 231-835-0 |
| NFPA 704 | |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references |
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Disodium Pyrophosphate or Sodium Acid Pyrophosphate is a buffering and chelating agent used in canned seafood, as a scald agent in poultry and pork, as a sequesterant in potato products, and is used to aid leavening in baked goods.
[edit] Other uses
In leather treatment it can be used to remove iron stains on hides during processing. It can stabilize hydrogen peroxide solutions against oxidation. It can be used for cleaning with sulphamic acid in some dairy applications. In Petroleum production, it can be used as a dispersant in oil well drilling muds.
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