Use and Manufacturing

1 Chemical Reactivity

Reactivity with Water No reaction; Reactivity with Common Materials: No reaction; Stability During Transport: Stable; Neutralizing Agents for Acids and Caustics: Not pertinent; Polymerization: Not pertinent; Inhibitor of Polymerization: Not pertinent.

2 Definition

ChEBI: A 2-carbon sulfoxide in which the sulfur atom has two methyl substituents.

3 Methods of Manufacturing

Dimethyl sulfoxide is generally produced by dimethyl sulfide oxidation, due to the use of oxidants and oxidation methods are different, and thus have different production processes.

1. Methanol carbon disulfide methanol and carbon disulfide as raw materials, γ-Al2O3 as a catalyst, the first synthesis of dimethyl sulfide, and then with nitrogen dioxide (or nitric acid) oxidation of dimethyl sulfoxide.

2. Hydrogen peroxide to acetone as a buffer medium, so that dimethyl sulfide and hydrogen peroxide reaction. The production of dimethyl sulfoxide with this method is costly and unsuitable for mass production.

3. Nitrogen dioxide method to methanol and hydrogen sulfide in the role of γ-alumina generated dimethyl sulfide; sulfuric acid and sodium nitrite reaction to produce nitrogen dioxide; dimethyl sulfide and nitrogen dioxide in the 60-80 ℃ gas-liquid oxidation reaction to produce crude dimethyl sulfoxide, but also directly with oxygen for oxidation, the same crude dimethyl sulfoxide, and then by vacuum distillation, refined dimethyl sulfoxide finished. This method is more advanced production methods.