E 339 (i) ΔΙΣΟΞΙΝΟ ΦΩΣΦΟΡΙΚΟ ΝΑΤΡΙΟ
Συνώνυμα Δισόξινο ορθοφωσφορικό νάτριο
Ορισμός
Χημική ονομασία Δισόξινο φωσφορικό νάτριο
Aριθ. EINECS 231-449-2
Χημικός τύπος Άνυδρο: NaH2PO4
Μονοένυδρο: NaH2PO4 ∙ H2O
Δισένυδρο: NaH2PO4 ∙ 2H2O
Μοριακό βάρος Άνυδρο: 119,98
Μονοένυδρο: 138,00
Δισένυδρο: 156,01

Ο χημικός τύπος είναι ως ανωτέρω NaH2PO4 2H2O .Χρησιμοποιήται στην χημεία τροφήμων και με κωδικό Ε339

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Note added at 2 hrs (2008-03-03 16:34:39 GMT)
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Δές και αυτό.

Disodium hydrogen phosphate
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Disodium hydrogen phosphate

Identifiers
CAS number [7558-79-4]
Properties
Molecular formula Na2HPO4
Molar mass 141.96 g·mol−1 (anhydrous)
178.01 g/mol Dihydrate
268.07 g·mol−1 (Heptahydrate)
358.14 g·mol−1 (Dodecahydrate)
Appearance White crystalline solid
Melting point 240 ºC

Solubility in water 77 g·L-1 ~ 0.54 M
Except where noted otherwise, data are given for
materials in their standard state
(at 25 °C, 100 kPa)
Infobox disclaimer and references

Disodium hydrogen phosphate (Na2HPO4) is a white powder that is highly hygroscopic and water soluble salt.[1] It is therefore used commercially as an anti-caking additive in powdered products. It is also known as disodium hydrogen orthophosphate, sodium hydrogen phosphate or sodium phosphate dibasic. It is commercially available in both the hydrated and anhydrous forms.[2]


[edit] Uses
Disodium phosphate can be used in cream of wheat to quicken cook time.[citation needed]


[edit] References
^ Physical data (pdf)
^ MSDS
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