1.05104

Supelco

di-Potassium hydrogen phosphate

anhydrous for analysis EMSURE®

Synonym(s):
Dipotassium hydrogen phosphate, Potassium phosphate dibasic, Dipotassium Phosphate, Dipotassium hydrogenphosphate, Potassium phosphate dibasic, sec.-Potassium phosphate, Dipotassium phosphate
Linear Formula:
K2HPO4
CAS Number:
Molecular Weight:
174.18
MDL number:
EC Index Number:
231-834-5

storage conditions

Store at +5°C to +30°C.

Quality Level

assay

≥99.0% (alkalimetric)

form

solid

potency

8000 mg/kg LD50, oral (Rat)

pH

9 (20 °C, 10 g/L in H2O)

solubility

1600 g/L

density

2.44 g/cm3 at 20 °C

bulk density

700‑1000 kg/m3

anion traces

chloride (Cl-): ≤0.003%
sulfate (SO42-): ≤0.005%

cation traces

Fe: ≤ 0.0010%
N: ≤ 0.001%
Na: ≤ 0.5%
heavy metals (as Pb): ≤ 0.0005%

storage temp.

15-25°C

SMILES string

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

InChI

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

InChI key

ZPWVASYFFYYZEW-UHFFFAOYSA-L

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Analysis Note

Assay (alkalimetric): ≥ 99.0 %
pH-value (5 %; water): 8.7 - 9.3
Chloride (Cl): ≤ 0.003 %
Sulfate (SO₄): ≤ 0.005 %
Total nitrogen (N): ≤ 0.001 %
Heavy metals (as Pb): ≤ 0.0005 %
Fe (Iron): ≤ 0.0010 %
Na (Sodium): ≤ 0.5 %
Loss on drying (130 °C): ≤ 1.0 %

Legal Information

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

Certificate of Analysis

Certificate of Origin

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