Sodium phosphate dibasic

Name: Sodium phosphate dibasic
Brand: MM

anhydrous for analysis EMSURE^® ACS,Reag. Ph Eur

Synonym(s):

Sodium phosphate dibasic, di-Sodium hydrogen phosphate, sec-Sodium phosphate, Disodium hydrogen phosphate, Disodium phosphate, Sodium hydrogenphosphate

Select a Size

All Photos(2)

About This Item

Linear Formula:

Na₂HPO₄

CAS Number:

7558-79-4

Molecular Weight:

141.96

NACRES:

NA.21

EC Index Number:

231-448-7

UNSPSC Code:

12352302

MDL number:

MFCD00003496

assay:

≥99.0% (alkalimetric)

grade:

ACS reagent

form:

solid

Product Name

Sodium phosphate dibasic, anhydrous for analysis EMSURE^® ACS,Reag. Ph Eur

InChI

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

SMILES string

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

InChI key

BNIILDVGGAEEIG-UHFFFAOYSA-L

grade

ACS reagent

agency

reag. Ph. Eur.

product line

EMSURE^®

assay

≥99.0% (alkalimetric)

form

solid

potency

>2000 mg/kg LD₅₀, oral (Rat)

impurities

≤0.01% Insoluble matter

loss

≤ 0.2% loss on drying, 105 °C

pH

8.7-9.3 (20 °C, 10 g/L in H₂O)

pKa (25 °C)

(1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid)

mp

>450 °C

bulk density

880 kg/m³

anion traces

chloride (Cl^-): ≤0.002%
sulfate (SO₄^2-): ≤0.005%

cation traces

Cu: ≤0.0003%
Fe: ≤0.001%
K: ≤0.01%
Pb: ≤0.001%
heavy metals: ≤0.001%

storage temp.

2-30°C

Quality Level

300

Looking for similar products? Visit Product Comparison Guide

Related Categories

Lab Chemicals

Phosphates

Salts

Analysis Note

Assay (alkalimetric): ≥ 99.0 %
Insoluble matter: ≤ 0.01 %
pH-value (5 %; water, 25 °C): 8.7 - 9.3
Chloride (Cl): ≤ 0.002 %
Sulfate (SO₄): ≤ 0.005 %
Heavy metals (ACS): ≤ 0.001 %
Cu (Copper): ≤ 0.0003 %
Fe (Iron): ≤ 0.001 %
K (Potassium): ≤ 0.01 %
Pb (Lead): ≤ 0.001 %
Loss on Drying (105 °C): ≤ 0.2 %
Corresponds to ACS, Reag. Ph Eur

Other Notes

Replaces: SX0720; SX0720-1; SX0720-5; SX0720-7; SX0720-20

Legal Information

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

Application

Sodium phosphate dibasic can be used as:

A component of the mobile phase for the analysis of guanidinoacetate methyltransferase using high-performance liquid chromatography (HPLC).
The source of phosphate ions in the synthesis of hydroxyapatite nanopowders.

Storage Class

13 - Non Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c