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Sigma-Aldrich

Potassium methoxide

95%

Synonym(s):

Potassium methylate

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About This Item

Linear Formula:
CH3OK
CAS Number:
865-33-8
Molecular Weight:
70.13
Beilstein/REAXYS Number:
3551544
EC Number:
212-736-1
MDL number:
MFCD00012416
UNSPSC Code:
12352107
PubChem Substance ID:
24857610
NACRES:
NA.22

Quality Level

200

assay

95%

form

solid

SMILES string

[K+].C[O-]

InChI

1S/CH3O.K/c1-2;/h1H3;/q-1;+1

InChI key

BDAWXSQJJCIFIK-UHFFFAOYSA-N

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General description

Potassium methoxide is a basic nucleophile used in the dehalogenation of arylhalides.

Application

Potassium methoxide can be used:
  • As a methoxylating agent for methoxylation of bromo- and mesyloxyalkanes in the presence of an ionic liquid [bmim][BF4].
  • As a catalyst for the synthesis of dimethyl carbonate and methyl formate.
  • As a catalyst for the transesterification of sunflower oil for the production of biodiesel.

pictograms

FlameCorrosion
GHS02,GHS05

signalword

Danger

Hazard Classifications

Self-heat. 1 - Skin Corr. 1B

supp_hazards

EUH014

Storage Class

4.2 - Pyrophoric and self-heating hazardous materials

wgk_germany

WGK 2

flash_point_f

51.8 °F - closed cup

flash_point_c

11 °C - closed cup

ppe

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges

Certificates of Analysis (COA)

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The effect of Mo(CO)6 as a co-catalyst in the carbonylation of methanol to methyl formate catalyzed by potassium methoxide under CO, syngas and H2 atmospheres. HP-IR observation of the methoxycarbonyl intermediate of Mo(CO)6.
Jali S, et al.
J. Mol. Catal. A: Chem., 348(1-2), 63-69 (2011)
Significantly enhanced reactivities of the nucleophilic substitution reactions in ionic liquid.
Kim DW, et al.
The Journal of Organic Chemistry, 68(11), 4281-4285 (2003)
Synthesis of dimethyl carbonate from methanol and carbon dioxide using potassium methoxide as catalyst under mild conditions.
Cai Q, et al.
Catalysis Letters, 103(3-4), 225-228 (2005)
Integrated biodiesel production: a comparison of different homogeneous catalysts systems.
Vicente G, et al.
Bioresource Technology, 92(3), 297-305 (2004)
E Ballesteros et al.
Journal of chromatography. A, 719(1), 221-227 (1996-01-05)
An automated gas chromatographic method for the simultaneous determination of cholesterol, alpha-tocopherol and alpha-tocopheryl acetate in edible oils and fats without derivatization is reported. Interferences from lipid material are avoided by using a continuous system to transesterify triglycerides with potassium
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