Skip to Content
Merck
All Photos(2)

Key Documents

View All Documentation

292788

Sigma-Aldrich

Potassium methoxide

95%

Synonym(s):

Potassium methylate

Sign Into View Organizational & Contract Pricing
All Photos(2)

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
Pricing and availability is not currently available.

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

Looking for similar products? Visit Product Comparison Guide

General description

Potassium methoxide is a basic nucleophile used in the dehalogenation of arylhalides. [1] [2]

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].[3]
  • As a catalyst for the synthesis of dimethyl carbonate[4] and methyl formate.[5]
  • As a catalyst for the transesterification of sunflower oil for the production of biodiesel.[6]

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

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
SDBB1134
MKBM0740V
STBC3538V
S60247V
04729JJ

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

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)
Integrated biodiesel production: a comparison of different homogeneous catalysts systems.
Vicente G, et al.
Bioresource Technology, 92(3), 297-305 (2004)
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)
Oligoethylene Glycols as Highly Efficient Mutifunctional Promoters for Nucleophilic-Substitution Reactions
Vinod J H et al.
Chemistry?A European Journal , 18, 3918-3924 (2012)
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)
View All Related Papers

Questions

1–2 of 2 Questions  

  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

      Helpful?

  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

      Helpful?

Reviews

No rating value

Active Filters

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service