Merck
All Photos(2)

1.06559

Supelco

di-Sodium hydrogen phosphate anhydrous

for analysis particle size about 0.2-1 mm (~18-80 mesh ASTM) EMSURE®

Synonym(s):
Sodium phosphate dibasic, sec-Sodium phosphate, Disodium hydrogen phosphate, Disodium phosphate, Sodium hydrogenphosphate
Linear Formula:
Na2HPO4
CAS Number:
Molecular Weight:
141.96
MDL number:
EC Index Number:
231-448-7

grade

anhydrous

Quality Level

product line

EMSURE®

assay

≥99.0% (acidimetric)

form

solid

potency

>2000 mg/kg LD50, oral (Rat)

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

250 °C (decomposition)

solubility

77 g/L

bulk density

880 kg/m3

anion traces

chloride (Cl-): ≤0.002%
sulfate (SO42-): ≤0.005%

cation traces

Fe: ≤0.001%
K: ≤0.01%
N: ≤0.001%
heavy metals (as Pb): ≤0.001%

storage temp.

2-30°C

SMILES string

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

InChI

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

InChI key

BNIILDVGGAEEIG-UHFFFAOYSA-L

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Packaging

500 g in Plastic bottle
25 kg in Fibre carton

Analysis Note

Assay (acidimetric): ≥ 99.0 %
pH-value (5 %; water): 8.9 - 9.2
Chloride (Cl): ≤ 0.002 %
Sulfate (SO₄): ≤ 0.005 %
Total nitrogen (N): ≤ 0.001 %
Heavy metals (as Pb): ≤ 0.001 %
Fe (Iron): ≤ 0.001 %
K (Potassium): ≤ 0.01 %
Particle size (0.2 - 1 mm): about 90 %
Loss on Drying (105 °C): ≤ 0.2 %

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

Certificate of Analysis

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Certificate of Quality

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