Our company manufactures and distributes a variety of chemical products such as ionic liquids, pyridine bases, pyrazines and amines.

Koei Chemical 100 Years

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Koei Chemical Co., Ltd. began production of acetic acid for the medical industry in 1917. 100 years have elapsed since that time.
We draw on the wealth of R&D expertise we have developed as a company to provide nitrogen-containing compounds for various needs.

1917

Founded as Koei Pharmaceutical Co., Ltd. in Osaka and started to produce acetic acid.

1st President Shinkichi Noguchi

1934

Started to produce formalin.

1950

Changed the company name to
Koei Chemical Co., Ltd.

1952

Started to produce pentaerythritol.

1962

Started to produce amines.

1964

Started to produce pyridine bases.

1966

Expanded the fine chemical facility for Amines.

1967

"Okochi Memorial Production Prize" for the production of pyridine bases

1971-72

Started to produce formalin, trimethylolpropane, sodium hydrosulfite, amines and pyridine bases in Chiba Plant.

1980

Started to produce chemical body warmers.

1985

Started to produce 2-cyanopyrazine.

1997

Construction of a multi-purpose vapor-phase plant in Chiba Plant.

Listed on the 2nd Section of the Osaka Securities Exchange.

2006

Expanded the liquid-phase reaction plant in Chiba Plant.

Expanded the vapor-phase reaction plant in Chiba Plant.

2010

Opened a new laboratory in Chiba Plant and production and research functions centralized to Chiba Plant.

2013

Relocated Tokyo Head Office to the present address.

2016

Closedown of Osaka Plant.
Changed the registered address to Sodegaura-shi,Chiba

2017

Celebration the 100th anniversary.

Expanded the liquid-phase reaction plant.

Built the general office building in Chiba Plant.

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