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Merck

S9390

Sigma-Aldrich

Fosfato de sodio dibasic heptahidratado

ACS reagent, 98.0-102.0%

Sinónimos:

Fosfato de disodio, Hidrogenofosfato de disodio heptahidratado

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About This Item

Fórmula lineal:
Na2HPO4 · 7H2O
Número de CAS:
Peso molecular:
268.07
EC Number:
MDL number:
UNSPSC Code:
12352302
PubChem Substance ID:
NACRES:
NA.21

grade

ACS reagent

Quality Level

vapor density

4.9 (vs air)

assay

98.0-102.0%

form

powder

impurities

≤0.005% Insoluble matter

pH

8.7-9.3 (25 °C, 5% in solution)

density

1.68 g/mL at 25 °C (lit.)

anion traces

chloride (Cl-): ≤0.001%
sulfate (SO42-): ≤0.005%

cation traces

Fe: ≤0.001%
heavy metals: ≤0.001% (by ICP)

SMILES string

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

InChI

1S/2Na.H3O4P.7H2O/c;;1-5(2,3)4;;;;;;;/h;;(H3,1,2,3,4);7*1H2/q2*+1;;;;;;;;/p-2

InChI key

PYLIXCKOHOHGKQ-UHFFFAOYSA-L

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General description

El heptahidrato del fosfato de sodio dibásico es una forma hidratada del fosfato disódico (DSP) o el hidrógenoortofosfato disódico. El DSP es ampliamente utilizado como regulador de pH y laxante salino.

Application

Una mezcla de heptahidrato del fosfato de sodio dibásico, fosfato de potasio monobásico y NaCl en agua desionizada se utiliza para la preparación de disolución salina tamponada con fosfato (PBS, pH 7,4). La PBS se utiliza como una disolución tampón en la investigación biológica para mantener el pH constante.

Storage Class

13 - Non Combustible Solids

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable


Certificados de análisis (COA)

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