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S9390

Sigma-Aldrich

Phosphate de sodium dibasic heptahydraté

ACS reagent, 98.0-102.0%

Synonyme(s) :

Hydrogénophosphate de disodium heptahydraté, Phosphate disodique

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About This Item

Formule linéaire :
Na2HPO4 · 7H2O
Numéro CAS:
7782-85-6
Poids moléculaire :
268.07
Numéro CE :
237-707-0
Numéro MDL:
MFCD00149180
Code UNSPSC :
12352302
ID de substance PubChem :
329824623
Nomenclature NACRES :
NA.21

Qualité

ACS reagent

Niveau de qualité

200

Densité de vapeur

4.9 (vs air)

Pureté

98.0-102.0%

Forme

powder

Impuretés

≤0.005% Insoluble matter

pH

8.7-9.3 (25 °C, 5% in solution)

Densité

1.68 g/mL at 25 °C (lit.)

Traces d'anions

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

Traces de cations

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

Chaîne SMILES 

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

Clé InChI

PYLIXCKOHOHGKQ-UHFFFAOYSA-L

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Description générale

Sodium phosphate dibasic heptahydrate is a hydrated form of disodium phosphate (DSP) or disodium hydrogen orthophosphate. DSP is widely used as a pH regulator and saline laxative.

Application

A mixture of sodium phosphate dibasic heptahydrate, potassium phosphate monobasic, and NaCl in deionized water is used for the preparation of phosphate-buffered saline (PBS, pH 7.4). PBS is used as a buffer solution in biological research to keep the pH constant.

Code de la classe de stockage

13 - Non Combustible Solids

Classe de danger pour l'eau (WGK)

WGK 1

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

Certificats d'analyse (COA)

Recherchez un Certificats d'analyse (COA) en saisissant le numéro de lot du produit. Les numéros de lot figurent sur l'étiquette du produit après les mots "Lot" ou "Batch".

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