MilliporeSigma
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1.06579

Supelco

di-Sodium hydrogen phosphate dodecahydrate

for analysis EMSURE® ISO,Reag. Ph Eur

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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
Linear Formula:
Na2HPO4 · 12H2O
CAS Number:
Molecular Weight:
358.14
MDL number:
EC Index Number:
231-448-7

Agency

reag. ISO
reag. Ph. Eur.

Quality Level

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

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This Item
042737165071649
Sodium phosphate dibasic dodecahydrate meets analytical specification of Ph. Eur., BP, E339, 98.5-102.5% (T)

Sigma-Aldrich

04273

Sodium phosphate dibasic dodecahydrate

Essential Grade
Sodium phosphate dibasic dodecahydrate BioXtra, ≥99.0% (T)

Sigma-Aldrich

71649

Sodium phosphate dibasic dodecahydrate

Premium Grade
form

solid

form

crystals

form

crystals

form

crystals

impurities

≤2.5% Sodium Dihydrogene phospate

impurities

reducing matter, complies, residual solvents, complies, ≤0.001% heavy metals (as Pb), ≤1.0% NaH2PO4, 57-61% water (Karl Fischer)

impurities

-

impurities

insoluble matter, passes filter test

pH

9.0-9.3 (20 °C, 50 g/L in H2O)

pH

8.4-9.6 (20 °C, 1%)

pH

9.0-9.3 (25 °C, 50 mg/mL in H2O)

pH

8.8-9.4 (25 °C, 0.1 M in H2O)

solubility

218 g/L

solubility

-

solubility

water: soluble 35.8 g/L at 20 °C

solubility

H2O: 0.1 M at 20 °C, clear, colorless

density

1.52 g/cm3 at 20 °C

density

-

density

-

density

-

Linkage

Replaces: SX0718; SX0718-1

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

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


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