; formerly is a Japanese chemical company, established in 1915 and headquartered in Tokyo, manufacturing organic and inorganic chemicals, cement, special cement additives, electronic component transfer materials and food packaging materials. The company is listed on the

Tokyo Stock Exchange The , abbreviated as Tosho () or TSE/TYO, is a stock exchange located in Tokyo, Japan. It is the third largest stock exchange in the world by aggregate market capitalization of its listed companies, and the largest in Asia. It had 2,292 listed ...

and is a constituent of the

Nikkei 225 The Nikkei 225, or , more commonly called the ''Nikkei'' or the ''Nikkei index'' (), is a stock market index for the Tokyo Stock Exchange (TSE). It has been calculated daily by the '' Nihon Keizai Shimbun'' (''The Nikkei'') newspaper since 1950 ...

stock index In finance, a stock index, or stock market index, is an index that measures a stock market, or a subset of the stock market, that helps investors compare current stock price levels with past prices to calculate market performance. Two of the pr ...

History

In 1912 Tsuneichi Fujiyama founded a carbide business, Hokkai Carbide, in Tomakomai, a village in Hokkaido. One year later, Fujiyama patented his own process of producing cyanamide, the continuous cyanamide process. In 1913, Fujiyama with the help of 22 venture capitalists incorporated a reorganized Hokkai Carbide as Denki Kagaku Kogyo, the current company. Despite its legal status as an independent corporation, Denka was a

Mitsui is one of the largest ''keiretsu'' in Japan and one of the largest corporate groups in the world. The major companies of the group include Mitsui & Co. ( general trading company), Sumitomo Mitsui Banking Corporation, Nippon Paper Industries ...

-related company. The company changed its name from Denki Kagaku Kogyo to Denka Company Limited 2015.

Pontchartrain Works

The Pontchartrain Works facility owned by Denka in

Reserve, Louisiana Reserve is an unincorporated community in St. John the Baptist Parish, Louisiana, United States. It is located on the east bank of the Mississippi River. The population was 9,111 at the 2000 census. For statistical purposes, the United States Ce ...

has been reported to be emitting chloroprene which is defined as "likely to be carcinogenic to humans" by the EPA. Up to 755 times the safe air value of 0.2 μg/m³ of chloroprene has been recorded at the fifth ward elementary school in close proximity to the plant. The cancer risk in Reserve is 1,500 times the national average and is thought to be due to chloroprene levels. Denka has replied to the reports as being not based on "sound science".

References

External links

Denka official site

Denka Korea
(in Korean) Chemical companies based in Tokyo Cement companies of Japan Companies listed on the Tokyo Stock Exchange Chemical companies established in 1915 Japanese companies established in 1915 Mitsui Japanese brands {{Japan-company-stub