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Sigma-Aldrich

Potassium oxalate monohydrate

ACS reagent, 99%

Synonym(s):

Ethanedioic acid, Oxalic acid potassium salt

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About This Item

Linear Formula:
(COOK)2 · H2O
CAS Number:
Molecular Weight:
184.23
Beilstein/REAXYS Number:
3752576
EC Number:
MDL number:
UNSPSC Code:
12352300
PubChem Substance ID:
NACRES:
NA.21

grade

ACS reagent

Quality Level

description

neutrality passes test

assay

98.5-101.0% (ACS specification)
99%

form

crystals or chunks

impurities

H2SO4, passes test (darkened)
≤0.01% insolubles

pH

7.0-8.5 (25 °C, 50 g/L)

solubility

H2O: 10%

anion traces

chloride (Cl-): ≤0.002%
sulfate (SO42-): ≤0.01%

cation traces

Fe: ≤0.001%
NH4+: ≤0.002%
Na: ≤0.02%
heavy metals: ≤0.002% (by ICP)

SMILES string

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

InChI

1S/C2H2O4.2K.H2O/c3-1(4)2(5)6;;;/h(H,3,4)(H,5,6);;;1H2/q;2*+1;/p-2

InChI key

QCPTVXCMROGZOL-UHFFFAOYSA-L

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General description

Potassium oxalate monohydrate (POM) is a potassium salt of oxalic acid. Its crystal structure has been investigated by three-dimensional neutron diffraction studies.

Application

Potassium oxalate monohydrate may be used in the preparation of SBA-15 (Santa Barbara Amoprhous-15)- catalyst.
Potassium oxalate monohydrate may be used in the synthesis of bis(2,2"-bipyridine) (oxalato-O,O′)nickel(ii) tetrahydrate, a mononuclear mixed-ligand complex.

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Warning

Hazard Classifications

Acute Tox. 4 Dermal - Acute Tox. 4 Oral - Eye Irrit. 2

wgk_germany

WGK 1


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