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Merck
CN

223425

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:
6487-48-5
Molecular Weight:
184.23
UNSPSC Code:
12352300
NACRES:
NA.21
PubChem Substance ID:
329752307
EC Number:
209-506-8
Beilstein/REAXYS Number:
3752576
MDL number:
MFCD00150033
Assay:
98.5-101.0% (ACS specification)
99%
Grade:
ACS reagent
Form:
crystals or chunks
Solubility:
H2O: 10%

Key Documents

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Product Name

Potassium oxalate monohydrate, ACS reagent, 99%

form

crystals or chunks

InChI key

QCPTVXCMROGZOL-UHFFFAOYSA-L

InChI

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

SMILES string

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

grade

ACS reagent

description

neutrality passes test

assay

98.5-101.0% (ACS specification)
99%

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)

Quality Level

200

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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.

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.

pictograms

Exclamation mark
GHS07

signalword

Warning

Hazard Classifications

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

Storage Class

11 - Combustible Solids

wgk

WGK 1

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Certificates of Analysis (COA)

Lot/Batch Number
MKCZ8926
MKCZ7238
MKCX4047
MKCV4929
MKCW3078

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Solid-state chemistry of nickel (II)-oxalate-amine systems. Synthesis, characterization and crystal structure of the bis (2, 2'-bipyridine)(oxalato-O, O') nickel (II) tetrahydrate.
Roman P, et al.
Polyhedron, 14(20), 2863-2869 null
EPR and optical absorption studies of vanadyl ions in potassium oxalate monohydrate.
Kripal R, et al.
Physica B: Condensed Matter (Amsterdam, Netherlands), 392(1), 281-287 (2007)
Neutron diffraction refinement of the structure of potassium oxalate monohydrate.
Sequeira A, et al.
Acta Crystallographica Section B, Structural Science, Crystal Engineering and Materials, 26(1), 77-80 (1970)
The influence of water on the dispersion of vanadia supported on silica SBA-15: A combined XPS and Raman study.
Hess C, et al.
The Journal of Physical Chemistry C, 111(26), 9471-9479 (2007)
L Sosvorová et al.
Physiological research, 63(4), 521-527 (2014-06-09)
Increased homocysteine levels in serum are typical features of neurodegenerative brain diseases including hydrocephalus. The most frequent therapeutic approach consists of the insertion of a shunt, connecting the brain ventricles to an alternative drainage site. To decide whether the patient

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