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Sigma-Aldrich

Fosfato de sodio dibasic dodecahydrate

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

Sinónimos:

Fosfato de sec-sodio, Fosfato de disodio, Hidrogenofosfato de disodio dodecahydrate

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About This Item

Fórmula lineal:
Na2HPO4 · 12H2O
Número de CAS:
10039-32-4
Peso molecular:
358.14
EC Number:
231-448-7
MDL number:
MFCD00149181
UNSPSC Code:
12352300
PubChem Substance ID:
329763400
NACRES:
NA.21

grade

puriss. p.a.

Quality Level

200

assay

≥99.0% (T)

form

crystals

quality

crystallized

pH

9.0-9.3 (25 °C, 50 mg/mL in H2O)

solubility

water: soluble 35.8 g/L at 20 °C

anion traces

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

cation traces

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

InChI key

DGLRDKLJZLEJCY-UHFFFAOYSA-L

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General description

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.

Application

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

Storage Class

13 - Non Combustible Solids

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

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