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292788

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:
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

Signal Word

Danger

Hazard Statements

H251,H314

Hazard Classifications

Self-heat. 1 - Skin Corr. 1B

Supplementary Hazards

EUH014

Storage Class Code

4.2 - Pyrophoric and self-heating hazardous materials

WGK

WGK 2

Flash Point(F)

51.8 °F - closed cup

Flash Point(C)

11 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

FSL

Group 3: Spontaneously combustible substances and water- reactive materials
Materials containing Organometallic compounds
Hazardous rank I
1st spontaneously combustible materials and water reactive materials

JAN Code

292788-BULK:
292788-250G:
292788-5G:
292788-VAR:

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Certificates of Analysis (COA)

Lot/Batch Number
SDBB1134
MKBM0740V
STBC3538V
S60247V
04729JJ

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Oligoethylene Glycols as Highly Efficient Mutifunctional Promoters for Nucleophilic-Substitution Reactions
Vinod J H et al.
Chemistry?A European Journal , 18, 3918-3924 (2012)
General and practical potassium methoxide/disilane-mediated dehalogenative deuteration of (hetero) arylhalides
Xin W et al.
Journal of the American Chemical Society, 140, 10970-10974 (2018)
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)
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