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Merck
CN

221996

Sigma-Aldrich

Sodium phosphate dibasic heptahydrate

≥98%, ACS reagent

Synonym(s):

Disodium hydrogen phosphate heptahydrate, Disodium phosphate

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About This Item

Linear Formula:
Na2HPO4 · 7H2O
CAS Number:
7782-85-6
Molecular Weight:
268.07
EC Number:
237-707-0
MDL number:
MFCD00149180
UNSPSC Code:
12352300

Key Documents

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grade

ACS reagent

vapor density

4.9 (vs air)

Assay

≥98%
98.0-102.0%

impurities

≤0.005% insolubles

pH

8.7-9.3

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%

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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Regulatory Information

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Certificates of Analysis (COA)

Lot/Batch Number
02828CW
15523AN
14713LO
12314JG
11903LA

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