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Sigma-Aldrich

Natriumphosphat dibasisch Dodecahydrat

puriss. p.a., crystallized, ≥99.0% (T)

Synonym(e):

sec-Natriumphosphat, Dinatrium-hydrogenphosphat Dodecahydrat, Dinatriumphosphat, di-Natriumhydrogenphosphat Dodecahydrat

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About This Item

Lineare Formel:
Na2HPO4 · 12H2O
CAS-Nummer:
10039-32-4
Molekulargewicht:
358.14
EG-Nummer:
231-448-7
MDL-Nummer:
MFCD00149181
UNSPSC-Code:
12161700
PubChem Substanz-ID:
329763400
NACRES:
NA.21

Qualität

puriss. p.a.
crystallized

Assay

≥99.0% (T)

Form

crystals

pH-Wert

9.0-9.3 (25 °C, 50 mg/mL in H2O)

Löslichkeit

water: soluble 35.8 g/L at 20 °C

Anionenspuren

chloride (Cl-): ≤5 mg/kg
fluoride (F-): ≤5 mg/kg
sulfate (SO42-): ≤50 mg/kg

Kationenspuren

As: ≤0.5 mg/kg
Ca: ≤10 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤5 mg/kg
K: ≤50 mg/kg
Mg: ≤5 mg/kg
Mn: ≤5 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Zn: ≤5 mg/kg

SMILES String

O.O.O.O.O.O.O.O.O.O.O.O.[Na+].[Na+].OP([O-])([O-])=O

InChI

1S/2Na.H3O4P.12H2O/c;;1-5(2,3)4;;;;;;;;;;;;/h;;(H3,1,2,3,4);12*1H2/q2*+1;;;;;;;;;;;;;/p-2

InChIKey

DGLRDKLJZLEJCY-UHFFFAOYSA-L

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Allgemeine Beschreibung

Sodium phosphate is a colorless crystalline sodium salt. It is widely used as a buffer in molecular biology, biochemistry, and chromatographic studies. It exists in three forms: monobasic (NaH2PO4), dibasic (Na2HPO4), and tribasic (Na3PO4). Monobasic and dibasic forms in varying ratios are commonly used to compose the neutral sodium phosphate buffer solution.

Anwendung

Sodium phosphate dibasic dodecahydrate may be used to prepare the 0.1M phosphate buffer having pH 7.4.

Lagerklassenschlüssel

13 - Non Combustible Solids

WGK

WGK 1

Flammpunkt (°F)

Not applicable

Flammpunkt (°C)

Not applicable

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