Compositions comprising an alkanesulfonic acid and an organic nitrogenous base, and related methods of use.

Multipurpose, non-corrosive cleaning compositions and methods of use

An object is to provide an exhaust-gas treatment apparatus capable of realizing a dissolved-salt spray method easily and at low cost. An exhaust-gas treatment apparatus that removes SO2 and SO3 contained in combustion exhaust gas includes a desulfurization apparatus based on the lime-gypsum method. Desulfurizing effluent, containing dissolved salt, from the desulfurization apparatus is sprayed to an upstream side of the desulfurization apparatus to remove SO3. A wet electrical dust precipitator may be provided downstream of the desulfurization apparatus. Furthermore, effluent from the wet electrical dust precipitator may be made to merge with the desulfurizing effluent from the desulfurization apparatus.

Exhaust-gas treatment apparatus and exhaust-gas treatment method

A process for the production of an alkanesulphonic acid by hydrolyzing in the heated state an alkanesulphonyl chloride. The process is preferably continuous. The hydrolysis reaction is initiated by the instantaneous use of energy released by the state change of one of the reagents internal to the system.

Process for the preparation of alkanesulphonic acids

A process for preparing methanesulfonic acid by irradiating a mixture comprising acetic acid, sulfur dioxide and oxygen with light, wherein the reaction mixture is irradiated with an average cumulative irradiance in the range from 240 to 320 mm of from 0.05 to 50 mmol quanta/cm 2 h at the light entry area.

Preparation of methane sulfonic acid

Process for synthesising, separating, characterising and analysing sodium photosulphonates from methyl ester derivatives of fatty acids in the detergent range.

Process for synthesising photosulphonates from methyl esters

A process for producing an alkanesulfonic acid is described, which comprises causing sulfur dioxide and oxygen to act on a saturated hydrocarbon under illumination with light in a substantially water-free reaction system, wherein photo-sulfoxidation of the saturated hydrocarbon is performed as a reaction mixture in the reaction system is held in contact with sodium sulfite

O Nippon Mining Co. Ltd. Matsuda

Papers

Process for producing alkanesulfonic acids