Sodium phosphate monobasic dihydrate

Item number: NS131

Synonyms Monosodium phosphate Dihydrate; Sodium dihydrogenorthophosphate Dihydrate; Sodium phosphate monobasic Dihydrate

Used for example as buffers in the pH range 5 - 8 in molecular biology and biochemistry (Schrödter, et al., 2008).

Category: Sodium dihydrogen phosphate

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Description

Synonyms Monosodium phosphate Dihydrate, Sodium dihydrogenorthophosphate Dihydrate, Sodium phosphate monobasic Dihydrate

The dihydrate and the anhydrous salt of sodium phosphate are usual commercial forms.

Mixtures of monosodium dihydrogen phosphat and disodium hydrogen phosphate are used as buffers in the pH range 5 - 8 in molecular biology and biochemistry (Schrödter, et al., 2008).




References:

Schrödter, K., Bettermann, G., Staffel, T., Wahl, F., Klein, T., Hofmann, T. (2008). "Phosphoric Acid and Phosphates" in Ullmann's Encyclopedia of Industrial Chemistry, Wiley-VCH, Weinheim.

Safety informations

Für diese Substanz sind keine H- und P-Sätze definiert.

Specifications

Reinheit: 99 %
Aussehen: Farb- und Geruchloses Salz
Aggregatzustand: Fest

Technische Daten

Summenformel: NaH2PO4 · 2 H2O
Molare Masse (M): 156,01 g/mol
Dichte: 1,92 g/cm3
Löslichkeit in Wasser: 850 g/l (20 °C)
pH Wert (1%): 4,5 (25 °C)
Schmelzpunkt: 60 °C
Siedepunkt (Zersetzung): > 60 °C
CAS-Nr.: 13472-35-0
PubChem-Nr.: 23672064

Zusammensetzung

Die angegebenen Zahlen sind Näherungswerte und hängen vom Reinheitsgrad des Stoffes ab

Element Symbol Atommmasse # Atome Massenanteil
Wasserstoff H 1.0079 6 3.877%
Sauerstoff O 15.9994 6 61.533%
Phosphor P 30.9738 1 19.854%
Natrium Na 22.9898 1 14.736%

CoA & Safety data sheet

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