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Merck
CN

60426

Sigma-Aldrich

Potassium oxalate monohydrate

puriss. p.a., ACS reagent, ≥99.5% (RT)

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
Beilstein:
3752576
EC Number:
209-506-8
MDL number:
MFCD00150033
UNSPSC Code:
12352300
PubChem Substance ID:
329758973

Key Documents

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grade

ACS reagent
puriss. p.a.

Assay

≥99.5% (RT)

impurities

≤0.002% ammonium (NH4)

pH

7.0-8.5 (25 °C, 50 mg/mL in H2O)

anion traces

chloride (Cl-): ≤10 mg/kg
sulfate (SO42-): ≤100 mg/kg

cation traces

Ca: ≤10 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤5 mg/kg
Mg: ≤5 mg/kg
Mn: ≤5 mg/kg
Na: ≤200 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Zn: ≤5 mg/kg

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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Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H302 + H312,H319

Hazard Classifications

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

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 1

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

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Leandro O Conte et al.
Environmental science and pollution research international, 24(7), 6205-6212 (2016-03-15)
The solar photo-Fenton degradation of the herbicide 2,4-dichlorophenoxyacetic acid (2,4-D) in aqueous solution at a natural pH (pH = 5) using ferrioxalate as iron source was investigated. The kinetic model proposed and validated in a previous contribution was used to predict the
Leandro O Conte et al.
Journal of hazardous materials, 372, 113-120 (2018-04-22)
The effects of four inorganic anions (Cl-, SO42-, HCO3-, NO3-) usually present in groundwater were investigated on the photo-Fenton degradation of 2,4-dichlorophenoxyacetic acid (2,4-D). A kinetic model derived from a reaction sequence is proposed using the ferrioxalate complex as iron
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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