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1.06580

di-Sodium hydrogen phosphate dihydrate

for analysis EMSURE®

Synonym(s):

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

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About This Item

Linear Formula:
Na2HPO4 · 2H2O
CAS Number:
10028-24-7
Molecular Weight:
177.99
NACRES:
NA.21
EC Index Number:
231-448-7
UNSPSC Code:
12352302
MDL number:
MFCD00149182
Assay:
≥99.5% (acidimetric)
Grade:
Laboratory Reagent
Form:
solid
Solubility:
93 g/L
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grade

Laboratory Reagent

Quality Level

300

product line

EMSURE®

assay

≥99.5% (acidimetric)

form

solid

potency

>2000 mg/kg LD50, oral (Rat)

pH

9.0-9.2 (20 °C, 50 g/L in H2O)

mp

92.5 °C (Elimination of water of crystallisation)

solubility

93 g/L

density

2.1 g/cm3 at 20 °C

bulk density

850‑1000 kg/m3

anion traces

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

cation traces

Cu: ≤0.0003%, Fe: ≤0.001%, K: ≤0.005%, N: ≤0.001%, Pb: ≤0.001%, heavy metals (as Pb): ≤0.001%

storage temp.

2-30°C

SMILES string

O.O.[Na+].[Na+].OP([O-])([O-])=O

InChI

1S/2Na.H3O4P.2H2O/c;;1-5(2,3)4;;/h;;(H3,1,2,3,4);2*1H2/q2*+1;;;/p-2

InChI key

KDQPSPMLNJTZAL-UHFFFAOYSA-L

Application

di-Sodium hydrogen phosphate dihydrate can be used as a:
  • Buffering agent in size exclusion chromatography (SEC) analysis of adalimumab.
  • Phosphorus source in the synthesis of hydroxyapatite via wet chemical precipitation.

Analysis Note

Assay (acidimetric): ≥ 99.5 %
Identity: passes test
pH-value (5 %; water): 9.0 - 9.2
Chloride (Cl): ≤ 0.001 %
Sulfate (SO₄): ≤ 0.005 %
Total nitrogen (N): ≤ 0.001 %
Heavy metals (as Pb): ≤ 0.001 %
Cu (Copper): ≤ 0.0003 %
Fe (Iron): ≤ 0.001 %
K (Potassium): ≤ 0.005 %
Pb (Lead): ≤ 0.001 %

Other Notes

Replaces: 1.06580.9057; SX0713; SX0713-5

Legal Information

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

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Storage Class

11 - 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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