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di-Sodium hydrogen phosphate dihydrate 99 +%, Foodgrade, FCC, E339 (ii)
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What is Di-Sodium Hydrogen Phosphate?
Disodium hydrogen phosphate dihydrate or disodium phosphate is a sodium salt of phosphoric acid. It is also known as secondary sodium phosphate. It possesses chemical formula Na2HPO4 2 H2O. It's a white powder.
What is di-Sodium hydrogen phosphate used for?
In the food industry, disodium hydrogen phosphate is used as a complexing agent, acidity regulator and melting salt. Together with sodium dihydrogen phosphate and sodium phosphate, it is approved in the EU as a food additive under the generic number E 339 ("sodium phosphate") for certain foods, each with different restrictions on maximum amounts. According to the Additive Approval Ordinance, these - largely uniform for most approved phosphates - are individual specifications for a wide variety of foods. The maximum allowed amounts range from 0.5 to 50 grams per kilogram (in creamer for vending machines) or the lack of a fixed restriction (quantum satis - as required, for dietary supplements and sometimes for chewing gum).
Phosphate buffer
Disodium hydrogen phosphate is used in biochemistry and molecular biology for the production of buffer solutions. By mixing sodium dihydrogen phosphate with disodium hydrogen phosphate solution or by adding sodium hydroxide solution, a phosphate buffer with a specific pH value (pH 6-8) can be produced. It is also part of some medicines as a pH buffer.
buy di-Sodium hydrogen phosphate?
This disodium hydrogen phosphate is of the highest European quality and certified food grade and that for a friendly price! So if you need di-sodium phosphate of the highest quality, order quickly! Always with volume discount
Technical data:
Empirical formula Na2HPO4 2 H2O
Molar mass (M) 177.99 g / mol
Density (D) 2.1
Melting point (mp) 92.5 ° C
Solubility 93 g / l (H2O, 20 ° C)
WGK 1
CAS No. [10028-24-7]
EC no. 231-448-7
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