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1.06579

di-Sodium hydrogen phosphate dodecahydrate

for analysis EMSURE® ISO,Reag. Ph Eur

Synonym(s):

Sodium phosphate dibasic dodecahydrate, Sodium monohydrogen phosphate, Sodium phosphate dibasic, sec-Sodium phosphate, Disodium hydrogen phosphate dodecahydrate, Disodium phosphate, di-Sodium hydrogen phosphate dodecahydrate

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About This Item

Linear Formula:
Na2HPO4 · 12H2O
CAS Number:
10039-32-4
Molecular Weight:
358.14
NACRES:
NA.21
EC Index Number:
231-448-7
UNSPSC Code:
12352302
MDL number:
MFCD00149181
Assay:
99.0-102.0% (alkalimetric)
Form:
solid
Solubility:
218 g/L
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Quality Level

300

agency

reag. ISO, reag. Ph. Eur.

product line

EMSURE®

assay

99.0-102.0% (alkalimetric)

form

solid

potency

>2000 mg/kg LD50, oral (Rat)

composition

Water, 57-61%

impurities

≤2.5% Sodium Dihydrogene phospate

pH

9.0-9.3 (20 °C, 50 g/L in H2O)

solubility

218 g/L

density

1.52 g/cm3 at 20 °C

bulk density

800‑900 kg/m3

anion traces

chloride (Cl-): ≤0.0005%, sulfate (SO42-): ≤0.005%

cation traces

As: ≤0.00005%, Cu: ≤0.0002%, Fe: ≤0.0005%, K: ≤0.005%, N: ≤0.001%, Pb: ≤0.0005%, heavy metals (as Pb): ≤0.0005%

storage temp.

15-25°C

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

Application

di-Sodium hydrogen phosphate dodecahydrate can be used as a:
  • Reagent in the intramolecular Heck Reaction to synthesize fused indolines.
  • Phase change material to enhance thermal energy storage in heat sinks.
It can also be used to prepare mobile-phase buffer solutions, which are employed in the chromatographic analysis of arsenic species in rice samples.

Analysis Note

Assay (alkalimetric): 99.0 - 102.0 %
Identity: passes test
Appearance of solution: passes test
Sodium Dihydrogene phospate: ≤ 2.5 %
pH-value (5 %; water): 9.0 - 9.3
Chloride (Cl): ≤ 0.0005 %
Sulfate (SO₄): ≤ 0.005 %
Total nitrogen (N): ≤ 0.001 %
Heavy metals (as Pb): ≤ 0.0005 %
As (Arsenic): ≤ 0.00005 %
Cu (Copper): ≤ 0.0002 %
Fe (Iron): ≤ 0.0005 %
K (Potassium): ≤ 0.005 %
Pb (Lead): ≤ 0.0005 %
Reducing substances: passes test
Water: 57.0 - 61.0 %
Corresponds to ISO,Reag. Ph Eur

Other Notes

Replaces: SX0718; SX0718-1

Legal Information

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

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Storage Class

13 - Non Combustible Solids

flash_point_f

Not applicable

flash_point_c

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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