Inorganic products

Caustic soda is used in the paper manufacturing process.

The electrolysis business has been a cornerstone of Toagosei since its founding, with manufacturing bases for electrolysis located at its Nagoya, Tokushima, and Yokohama plants. Electrolysis at Toagosei means soda electrolysis using sodium chloride and potash electrolysis using potassium chloride. We produce caustic soda and chlorine by electrolyzing sodium chloride. Caustic soda is used as a basic raw material in a variety of industries, and so the extent of the soda industry’s development in a country is a measure of its economic development. Caustic soda is used as a raw material for paper, pulp and chemicals. Chlorine is used in liquid chlorine, hydrochloric acid, sodium hypochlorite, and iron (III) chloride solution, etc. In addition, the Nagoya Plant produces caustic potash. We produce and store our electrolysis products at multiple locations and strive to maintain a stable supply from optimal shipping locations. In addition to electrolysis products, we also manufacture and sell a wide array of pharmaceutical agents such as sulfuric acid and sodium sulfite which are used in a broad range of industries.

Main Products

Inorganic products

Organic products


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