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The , since 2012 reorganized as JNC (Japan New Chisso), is a Japanese chemical company. It is an important supplier of
liquid crystal Liquid crystal (LC) is a state of matter whose properties are between those of conventional liquids and those of solid crystals. For example, a liquid crystal can flow like a liquid, but its molecules may be oriented in a common direction as i ...
used for LCDs, but is best known for its role in the 34-year-long pollution of the water supply in Minamata,
Japan Japan is an island country in East Asia. Located in the Pacific Ocean off the northeast coast of the Asia, Asian mainland, it is bordered on the west by the Sea of Japan and extends from the Sea of Okhotsk in the north to the East China Sea ...
that led to thousands of deaths and victims of disease. Between 1932 and 1968, Chisso's chemical factory in Minamata released large quantities of industrial wastewater that was contaminated with highly
toxic Toxicity is the degree to which a chemical substance or a particular mixture of substances can damage an organism. Toxicity can refer to the effect on a whole organism, such as an animal, bacterium, or plant, as well as the effect on a subst ...
methylmercury Methylmercury is an organometallic cation with the formula . It is the simplest organomercury compound. Methylmercury is extremely toxic, and its derivatives are the major source of organic mercury for humans. It is a bioaccumulative environment ...
. This poisonous water bioaccumulated in local sea life that was then consumed by the immediate population. As a result of this contamination, 2,265 individuals in the area were afflicted with what is now known as Minamata disease. 1,784 of those victims died as a result of the poisoning and/or the disease.Official government figure as of March 2001. Se
"Minamata Disease: The History and Measures, ch2"
/ref> Those who were afflicted with the disease developed skeletomuscular deformities and lost the ability to perform motor functions such as walking. Many also lost significant amounts of vision, as well as hearing and speech capabilities. Severe cases presented with insanity, paralysis, coma and then death within weeks of the onset of symptoms. As of March 2001, over 10,000 individuals had received financial remuneration from Chisso to compensate them for the harm caused by the chemical release.Se

, Frequently asked questions, Question 6
By 2004, Chisso Corporation had paid $86 million in compensation, and, in the same year, the company was ordered to clean up its contamination. However, the incident remains controversial for not only the poisoning itself but also for the tactics that the company used to suppress the negative aftermath. Chisso is a member of the Mizuho
keiretsu A is a set of companies with interlocking business relationships and shareholdings that dominated the Japanese economy in the second half of the 20th century. In the legal sense, it is a type of business group that is in a loosely organized al ...
.


History


Foundation

In 1906,
Shitagau Noguchi was a Japanese entrepreneur who founded the Nichitsu ''zaibatsu''. Known as the father of electrochemical engineering in Japan, he invested heavily in the development of Korea under Japanese rule, Korea and Manchukou in cooperation with the Imper ...
, an
electrical engineering Electrical engineering is an engineering discipline concerned with the study, design, and application of equipment, devices, and systems that use electricity, electronics, and electromagnetism. It emerged as an identifiable occupation in the l ...
graduate of Tokyo Imperial University, founded the which operated a hydroelectric power station in Ōkuchi,
Kagoshima Prefecture is a Prefectures of Japan, prefecture of Japan located on the island of Kyushu and the Ryukyu Islands. Kagoshima Prefecture has a population of 1,527,019 (1 February 2025) and has a geographic area of 9,187 Square kilometre, km2 (3,547 Square m ...
. The power station supplied electricity for the gold mines in Ōkuchi but had overcapacity. To make use of the surplus power, in 1908, Noguchi founded the which operated a
carbide In chemistry, a carbide usually describes a compound composed of carbon and a metal. In metallurgy, carbiding or carburizing is the process for producing carbide coatings on a metal piece. Interstitial / Metallic carbides The carbides of th ...
factory in the coastal town of Minamata,
Kumamoto Prefecture is a Prefectures of Japan, prefecture of Japan located on the island of Kyūshū. Kumamoto Prefecture has a population of 1,748,134 () and has a geographic area of . Kumamoto Prefecture borders Fukuoka Prefecture to the north, Ōita Prefecture t ...
, about 30 km northwest of Ōkuchi. In the same year he merged the two companies to form the - usually referred to as Nichitsu.


Expansion

In 1909, Noguchi purchased the rights to the Frank-Caro process, whereby atmospheric
nitrogen Nitrogen is a chemical element; it has Symbol (chemistry), symbol N and atomic number 7. Nitrogen is a Nonmetal (chemistry), nonmetal and the lightest member of pnictogen, group 15 of the periodic table, often called the Pnictogen, pnictogens. ...
was combined with
calcium carbide Calcium carbide, also known as calcium acetylide, is a chemical compound with the chemical formula of . Its main use industrially is in the production of acetylene and calcium cyanamide. The pure material is colorless, while pieces of technica ...
(a key product of the young company) to produce calcium cyanamide, a chemical
fertilizer A fertilizer or fertiliser is any material of natural or synthetic origin that is applied to soil or to plant tissues to supply plant nutrients. Fertilizers may be distinct from liming materials or other non-nutrient soil amendments. Man ...
. Nitrogenous fertilizers were key to boosting agricultural production in
Japan Japan is an island country in East Asia. Located in the Pacific Ocean off the northeast coast of the Asia, Asian mainland, it is bordered on the west by the Sea of Japan and extends from the Sea of Okhotsk in the north to the East China Sea ...
at the time, due to its lack of arable land and the small-scale nature of its farms, so the company found a ready market for its product. Nichitsu also branched out into other products produced from
calcium carbide Calcium carbide, also known as calcium acetylide, is a chemical compound with the chemical formula of . Its main use industrially is in the production of acetylene and calcium cyanamide. The pure material is colorless, while pieces of technica ...
, beginning production of
acetic acid Acetic acid , systematically named ethanoic acid , is an acidic, colourless liquid and organic compound with the chemical formula (also written as , , or ). Vinegar is at least 4% acetic acid by volume, making acetic acid the main compone ...
,
ammonia Ammonia is an inorganic chemical compound of nitrogen and hydrogen with the chemical formula, formula . A Binary compounds of hydrogen, stable binary hydride and the simplest pnictogen hydride, ammonia is a colourless gas with a distinctive pu ...
,
explosives An explosive (or explosive material) is a reactive substance that contains a great amount of potential energy that can produce an explosion if released suddenly, usually accompanied by the production of light, heat, sound, and pressure. An exp ...
and butanol. Production of ammonium sulfate (another chemical fertilizer) started in 1914 at a plant in Kagami,
Kumamoto Prefecture is a Prefectures of Japan, prefecture of Japan located on the island of Kyūshū. Kumamoto Prefecture has a population of 1,748,134 () and has a geographic area of . Kumamoto Prefecture borders Fukuoka Prefecture to the north, Ōita Prefecture t ...
, using a
nitrogen fixation Nitrogen fixation is a chemical process by which molecular dinitrogen () is converted into ammonia (). It occurs both biologically and abiological nitrogen fixation, abiologically in chemical industry, chemical industries. Biological nitrogen ...
process - a Japan first. Sales of ammonium sulfate were increasing year-on-year as were market prices. A new plant was opened at the Minamata factory in 1918 where it was able to produce ammonium sulfate for 70 yen per ton and sell it for five and a half times the cost. These massive profits enabled Nichitsu to survive the subsequent drop in prices after the return of foreign competition into the Japanese market after the end of
World War I World War I or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a World war, global conflict between two coalitions: the Allies of World War I, Allies (or Entente) and the Central Powers. Fighting to ...
in Europe in September 1918. After the war, Noguchi visited Europe and decided Nichitsu should pioneer an alternative synthesis of ammonium sulfate in Japan. In 1924, the Nichitsu plant at Nobeoka began production using the Casale ammonia synthesis which required the use of extremely high temperatures and pressures. Once the process was proved a success, the Minamata plant was converted to the process and began mass production. Nichitsu grew steadily, invested its profits in new technology and expanded production into new areas and slowly became a large conglomerate of many different companies.George, Timothy S. (2001). ''Minamata: Pollution and the Struggle for Democracy in Postwar Japan''. Harvard University Asia Center. .


Nichitsu in Korea

In 1924, Shitagau Noguchi expanded Nichitsu into
Korea Korea is a peninsular region in East Asia consisting of the Korean Peninsula, Jeju Island, and smaller islands. Since the end of World War II in 1945, it has been politically Division of Korea, divided at or near the 38th parallel north, 3 ...
, a colony of Japan. In 1926, he established two companies in Korea as subsidiaries of Nichitsu, mirroring the foundation of the parent company: and . Noguchi wanted to repeat his success in Ōkuchi and Minamata, but on an even greater scale in Korea. The power company constructed hydroelectric power plants along rivers draining into the Yalu River. In 1927, the fertilizer subsidiary built a huge chemical complex in
Hungnam HÅ­ngnam () is a district of Hamhung, the second largest city in North Korea. It is a port city on the eastern coast on the Sea of Japan. It is only from the slightly inland city of Hamhung. In 2005 it became a ward of Hamhung. History The por ...
. The hydroelectric power plants supplied electricity for the chemical plant, in the same way as the Ōkuchi power plant had done so for the Minamata chemical factory. Nichitsu invested in Korea more aggressively than any other Japanese company. It and its subsidiaries grew rapidly in Korea, and came to be recognized as an emerging
zaibatsu is a Japanese language, Japanese term referring to industrial and financial vertical integration, vertically integrated business conglomerate (company), conglomerates in the Empire of Japan, whose influence and size allowed control over signifi ...
. The difference between Nichitsu's zaibatsu and established zaibatsu like
Mitsubishi The is a group of autonomous Japanese multinational companies in a variety of industries. Founded by Yatarō Iwasaki in 1870, the Mitsubishi Group traces its origins to the Mitsubishi zaibatsu, a unified company that existed from 1870 to 194 ...
and
Mitsui is a Japanese corporate group and '' keiretsu'' that traces its roots to the ''zaibatsu'' groups that were dissolved after World War II. Unlike the ''zaibatsu'' of the pre-war period, there is no controlling company with regulatory power. Ins ...
was that Nichitsu did not have its own bank and insurance company. Hence, Nichitsu relied on government-controlled banks.


Dissolution and reorganization

As Japan lost the
Second World War World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
in 1945, Nichitsu and its zaibatsu collapsed and was forced to abandon all properties and interests in Korea. Furthermore, the US-controlled Allied
occupation of Japan Japan was occupied and administered by the Allies of World War II from the surrender of the Empire of Japan on September 2, 1945, at the war's end until the Treaty of San Francisco took effect on April 28, 1952. The occupation, led by the ...
ordered the dismissal of the company, regarding it as a company that adhered to the militarism government. In 1950, the , usually referred to as Shin Nichitsu, was founded as a successor of the old company. Other successor companies include
Asahi Kasei is a multinational Japanese chemical company. Its main products are chemicals and materials. It was founded in May 1931, using the paid-in capital of Nobeoka Ammonia Fiber Co., Ltd, a Nobeoka, Miyazaki-based producer of ammonia, nitric acid ...
and Sekisui Chemical.


Minamata disease

Nichitsu had started production of
acetaldehyde Acetaldehyde (IUPAC systematic name ethanal) is an organic compound, organic chemical compound with the chemical formula, formula , sometimes abbreviated as . It is a colorless liquid or gas, boiling near room temperature. It is one of the most ...
using a mercury
catalyst Catalysis () is the increase in rate of a chemical reaction due to an added substance known as a catalyst (). Catalysts are not consumed by the reaction and remain unchanged after it. If the reaction is rapid and the catalyst recycles quick ...
at its Minamata plant in May 1932, and Shin Nichitsu continued production after the war. The plant discharged wastewater from its acetaldehyde plant into Minamata Bay via Hyakken Harbour. The wastewater contained many pollutants and poisonous substances including methylmercury, a highly toxic chemical. This chemical was absorbed by fish and shellfish and bioaccumulated up the
food chain A food chain is a linear network of links in a food web, often starting with an autotroph (such as grass or algae), also called a producer, and typically ending at an apex predator (such as grizzly bears or killer whales), detritivore (such as ...
. People who unknowingly ate the fish over many years suffered from severe mercury poisoning. Hajime Hosokawa, a doctor at a Shin Nichitsu's company hospital, officially reported on May 1, 1956 an "epidemic of an unknown disease of the central nervous system", marking the official discovery of Minamata disease. In 1963, doctors at Kumamoto University concluded that the cause of Minamata disease was mercury emitted by Shin Nihon Chisso Hiryo. In 1965, the company changed its name to . In May 1968, Chisso finally stopped using a mercury
catalyst Catalysis () is the increase in rate of a chemical reaction due to an added substance known as a catalyst (). Catalysts are not consumed by the reaction and remain unchanged after it. If the reaction is rapid and the catalyst recycles quick ...
in the production of
acetaldehyde Acetaldehyde (IUPAC systematic name ethanal) is an organic compound, organic chemical compound with the chemical formula, formula , sometimes abbreviated as . It is a colorless liquid or gas, boiling near room temperature. It is one of the most ...
. In 1969, patients sued Chisso for compensation. Many lawsuits were filed against Chisso after 1969, and some of them go on even now. Chisso president, later chairman Yutaka Egashira (later maternal grandfather of Masako, Empress of Japan) used '' yakuza'' in order to threaten and silence patients and their supporters. Patients and their supporters started the "single shareholder" movement by buying one share of Chisso each, which was aimed at accusing the executives of Chisso in its general meeting. A thousand of the single shareholders participating in the movement gathered in front of a hall in
Osaka is a Cities designated by government ordinance of Japan, designated city in the Kansai region of Honshu in Japan. It is the capital of and most populous city in Osaka Prefecture, and the List of cities in Japan, third-most populous city in J ...
to attend the general meeting called on November 28, 1970, but the company prevented them from entering the hall by asking yakuza to become shareholders and occupy the hall. The meeting ended in five minutes with all the bills submitted by the board approved.David E. Kaplan and Alec Dubro. ''Yakuza: Japan's Criminal Underworld''. University of California Press, 2003. . In addition, Chisso had American photographer and photo-journalist W. Eugene Smith beaten by yakuza goons after Smith published a highly regarded photo-essay showing the caustic injuries and birth defects Chisso had caused the Minamata population. The centerpiece of the work, titled " Tomoko and Mother in the Bath", depicted the severe deformation of a child in her mother's arms after the child was exposed to the effects of Chisso's contamination of the water supply. In response to Chisso's beating of W. Eugene Smith for dissemination of the photographs, Smith was awarded the Robert Capa Gold Medal in 1974 for "best published photographic reporting from abroad requiring exceptional courage and enterprise". The company's "historical overview" in its current website makes no mention of their role in the mass contamination of Minamata and the dreadful aftermath, although a separate section of the website, accessed from the same list as the overview, is devoted to the subject. This section, however, is absent from the English version of the website. Additionally, their 2004 Annual Report reports an equivalent of about US$50 million (5.82 billion yen) in "Minamata Disease Compensation Liabilities". From 2000 to 2003, the company also reported total compensation liabilities of over US$170 million. Their 2000 accounts also show that the Japanese and Kumamoto prefectural governments waived an enormous US$560 million in related liabilities. Their FY2004 and FY2005 reports refer to Minamata disease as " Mad Hatter's Disease", a term coined from the mercury poisoning experienced by hat-makers of the last few centuries (cf Mad Hatter).FY2004
an
FY2005
financial results. URL retrieved 2008-03-07.


Animal experimentation

After initial reports of Minamata disease emerged Chisso secretly conducted animal experiments in the 50s, exposing effluent to cats by mixing it in with their food. Despite Hosokawa's discoveries and public disclosures in 1959 the company did not release their experimental findings and continued to release effluent. The shack used during the animal experimentation was later obtained by The Supporting Center for Minamata Disease(Soshisha) in 1974 and is on display at the Minamoto Disease Museum in
Kumamoto Prefecture is a Prefectures of Japan, prefecture of Japan located on the island of Kyūshū. Kumamoto Prefecture has a population of 1,748,134 () and has a geographic area of . Kumamoto Prefecture borders Fukuoka Prefecture to the north, Ōita Prefecture t ...
.


See also

* LCD *
Liquid crystal Liquid crystal (LC) is a state of matter whose properties are between those of conventional liquids and those of solid crystals. For example, a liquid crystal can flow like a liquid, but its molecules may be oriented in a common direction as i ...
* Minamata disease * Four big pollution diseases of Japan * Minamata, Kumamoto *
Industrial waste Industrial waste is the waste produced by industrial activity which includes any material that is rendered useless during a manufacturing process such as that of factories, mills, and mining operations. Types of industrial waste include dirt and ...
*
Chemical waste Chemical waste is any excess, unused, or unwanted chemical. Chemical waste may be classified as hazardous waste, non-hazardous waste, universal waste, or household hazardous waste, each of which is regulated separately by national government ...
*
Zaibatsu is a Japanese language, Japanese term referring to industrial and financial vertical integration, vertically integrated business conglomerate (company), conglomerates in the Empire of Japan, whose influence and size allowed control over signifi ...


References


External links

*
Chisso Corporation
*
JNC Corporation


W. Eugene Smith: Tomoko Uemura in Her Bath, Minamata, 1972 {{Authority control Chemical companies of Japan Minamata disease