{"id":134,"date":"2026-08-03T13:36:40","date_gmt":"2026-08-03T04:36:40","guid":{"rendered":"https:\/\/www.npckk.co.jp\/english\/?page_id=134"},"modified":"2026-08-27T18:12:20","modified_gmt":"2026-08-27T09:12:20","slug":"history","status":"publish","type":"page","link":"https:\/\/www.npckk.co.jp\/english\/company\/history\/","title":{"rendered":"History"},"content":{"rendered":"\n<p class=\"has-text-color has-link-color has-medium-font-size wp-elements-1 wp-block-paragraph\" style=\"color:#1e5221\"><strong>1948<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Established Nippoh Kohatsu Co., Ltd. (capitalized at 2 million yen)<br>Head Office: Gofukubashi, Chuo-ku, Tokyo (currently Yaesu)<br>Factories:<br>Otaki Factory \u2013 Shinmachi Kanaya, Otaki-machi, Isumi-gun, Chiba<br>Chimachi Factory \u2013 Matsumaru, Sencho-mura, Isumi-gun, Chiba<\/li>\n\n\n\n<li>Started production of iodine<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-link-color has-medium-font-size wp-elements-2 wp-block-paragraph\" style=\"color:#1e5221\"><strong>1955<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Became affiliated with Nippon Shokubai Kagaku Kogyo Co., Ltd. (currently Nippon Shokubai Co., Ltd.)<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-link-color has-medium-font-size wp-elements-3 wp-block-paragraph\" style=\"color:#1e5221\"><strong>1957<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Established synthesis technology for hydrocyanic acid (hydrogen cyanide) and started its production<br>Established a foothold in cyanide derivatives through natural gas<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\">\n<p class=\"has-text-color has-link-color has-medium-font-size wp-elements-4 wp-block-paragraph\" style=\"color:#1e5221\"><strong>1961<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Started production of methyl orthoformate, a pharmaceutical raw material<br>Aimed to effectively use cyanide derivatives and cultivate demand<\/li>\n<\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\"><\/div>\n<\/div>\n\n\n\n<p class=\"has-text-color has-link-color has-medium-font-size wp-elements-5 wp-block-paragraph\" style=\"color:#1e5221\"><strong>1966<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Started production of the methyl bromide fumigant \u201cBromomethyl\u201d<br>Laid the foundation for today\u2019s range of bromine compounds<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-link-color has-medium-font-size wp-elements-6 wp-block-paragraph\" style=\"color:#1e5221\"><strong>1967<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Company renamed Nippoh Chemicals Co., Ltd.<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\">\n<p class=\"has-text-color has-link-color has-medium-font-size wp-elements-7 wp-block-paragraph\" style=\"color:#1e5221\"><strong>1971<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Started iodine production using the blowout method<\/li>\n<\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\"><\/div>\n<\/div>\n\n\n\n<p class=\"has-text-color has-link-color has-medium-font-size wp-elements-8 wp-block-paragraph\" style=\"color:#1e5221\"><strong>1973<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Increased capital to 100 million yen<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-link-color has-medium-font-size wp-elements-9 wp-block-paragraph\" style=\"color:#1e5221\"><strong>1978<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Started production of methyl orthoacetate, an agrochemical raw material<br>Achieved commercial production and sales within five months of receiving the manufacturing request<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-link-color has-medium-font-size wp-elements-10 wp-block-paragraph\" style=\"color:#1e5221\"><strong>1979<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Moved the head office to Nihonbashi-Muromachi, Chuo-ku, Tokyo<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-link-color has-medium-font-size wp-elements-11 wp-block-paragraph\" style=\"color:#1e5221\"><strong>1980<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Constructed the first multipurpose manufacturing facility<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-link-color has-medium-font-size wp-elements-12 wp-block-paragraph\" style=\"color:#1e5221\"><strong>1990<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Increased capital to 517.2 million yen<\/li>\n\n\n\n<li>Established Nippo Kosan Co., Ltd. (wholly-owned subsidiary)<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-link-color has-medium-font-size wp-elements-13 wp-block-paragraph\" style=\"color:#1e5221\"><strong>1993<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Constructed an iodine recovery facility<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-link-color has-medium-font-size wp-elements-14 wp-block-paragraph\" style=\"color:#1e5221\"><strong>1995<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Constructed an iodine compound production facility<\/li>\n\n\n\n<li>Started production of the polymerization initiators 4,4\u2032-Azobis(4-cyanovaleric acid) and 2,2\u2032-Azobis(2-amidinopropane) dihydrochloride<br>Succeeded in further expansion of cyanide derivatives<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-link-color has-medium-font-size wp-elements-15 wp-block-paragraph\" style=\"color:#1e5221\"><strong>1997<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Constructed a cyanide derivative plant<\/li>\n\n\n\n<li>Constructed a cyanide wastewater treatment plant<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-link-color has-medium-font-size wp-elements-16 wp-block-paragraph\" style=\"color:#1e5221\"><strong>1998<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Celebrated the 50th anniversary of the founding<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-link-color has-medium-font-size wp-elements-17 wp-block-paragraph\" style=\"color:#1e5221\"><strong>2001<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Obtained ISO 9001:2000 certification<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-link-color has-medium-font-size wp-elements-18 wp-block-paragraph\" style=\"color:#1e5221\"><strong>2003<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Constructed a gas turbine cogeneration system<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-link-color has-medium-font-size wp-elements-19 wp-block-paragraph\" style=\"color:#1e5221\"><strong>2007<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Obtained ISO 14001:2004 certification<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-link-color has-medium-font-size wp-elements-20 wp-block-paragraph\" style=\"color:#1e5221\"><strong>2009<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Completed the Ogiwara Base I (8 wells)<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-link-color has-medium-font-size wp-elements-21 wp-block-paragraph\" style=\"color:#1e5221\"><strong>2010<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Started production of the iodinating agent 1,3-Diiodo-5,5-dimethylhydantoin<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\">\n<p class=\"has-text-color has-link-color has-medium-font-size wp-elements-22 wp-block-paragraph\" style=\"color:#1e5221\"><strong>2013<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Moved the head office to Nihonbashi-Honcho, Chuo-ku, Tokyo<\/li>\n<\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\"><\/div>\n<\/div>\n\n\n\n<p class=\"has-text-color has-link-color has-medium-font-size wp-elements-23 wp-block-paragraph\" style=\"color:#1e5221\"><strong>2014<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Replaced the blowout tower<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-link-color has-medium-font-size wp-elements-24 wp-block-paragraph\" style=\"color:#1e5221\"><strong>2016<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Completed the Mangi Base (6 wells)<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\">\n<p class=\"has-text-color has-link-color has-medium-font-size wp-elements-25 wp-block-paragraph\" style=\"color:#1e5221\"><strong>2018<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Joined CIRIC (Chiba Iodine Resource Innovation Center)<\/li>\n<\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\"><\/div>\n<\/div>\n\n\n\n<p class=\"has-text-color has-link-color has-medium-font-size wp-elements-26 wp-block-paragraph\" style=\"color:#1e5221\"><strong>2026<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Constructed the office building at the Chimachi Factory<\/li>\n\n\n\n<li>Completed Ogiwara Base II (8 wells planned)<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>1948 1955 1957 1961 1966 1967 1971 1973 1978 1979 1980 1990 1993 1995 1997 1998 2001 2003 2007 2009 2010 2013 2014 2016 2018 2026<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":96,"menu_order":8,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-134","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.npckk.co.jp\/english\/wp-json\/wp\/v2\/pages\/134","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.npckk.co.jp\/english\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.npckk.co.jp\/english\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.npckk.co.jp\/english\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.npckk.co.jp\/english\/wp-json\/wp\/v2\/comments?post=134"}],"version-history":[{"count":13,"href":"https:\/\/www.npckk.co.jp\/english\/wp-json\/wp\/v2\/pages\/134\/revisions"}],"predecessor-version":[{"id":622,"href":"https:\/\/www.npckk.co.jp\/english\/wp-json\/wp\/v2\/pages\/134\/revisions\/622"}],"up":[{"embeddable":true,"href":"https:\/\/www.npckk.co.jp\/english\/wp-json\/wp\/v2\/pages\/96"}],"wp:attachment":[{"href":"https:\/\/www.npckk.co.jp\/english\/wp-json\/wp\/v2\/media?parent=134"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}