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Key Documents

1.06575

Supelco

di-Sodium hydrogen phosphate heptahydrate

for analysis EMSURE® ACS

Synonym(s):

Sodium phosphate dibasic heptahydrate, Disodium hydrogen phosphate heptahydrate, Disodium phosphate

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About This Item

Linear Formula:
Na2HPO4 · 7H2O
CAS Number:
Molecular Weight:
268.07
MDL number:
UNSPSC Code:
12352302
EC Index Number:
231-448-7
NACRES:
NA.21

grade

ACS reagent

Quality Level

vapor density

4.9 (vs air)

product line

EMSURE®

Assay

98.0-102.0% (acidimetric)

form

solid

potency

12930 mg/kg LD50, oral (Rat)

impurities

≤0.005% Insoluble matter

pH

8.7-9.3 (25 °C, 50 g/L in H2O)

mp

48 °C (Elimination of water of crystallisation)

solubility

154 g/L

density

1.68 g/mL at 25 °C (lit.)

bulk density

800 kg/m3

anion traces

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

cation traces

Fe: ≤0.001%
heavy metals: ≤0.001%

storage temp.

2-30°C

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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Linkage

Replaces: SX0715; SX0715-3; SX0715-20

Analysis Note

Assay (acidimetric): 98.0 - 102.0 %
Identity: passes test
Insoluble matter: ≤ 0.005 %
pH-value (5 %; water, 25 °C): 8.7 - 9.3
Chloride (Cl): ≤ 0.001 %
Sulfate (SO₄): ≤ 0.005 %
Heavy metals (ACS): ≤ 0.001 %
Fe (Iron): ≤ 0.001 %
Corresponds to ACS

Legal Information

EMSURE is a registered trademark of Merck KGaA, Darmstadt, Germany

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

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