{
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  "endpoint": "timeline",
  "stock_code": "4368",
  "company_name": "扶桑化学工業",
  "content_lang": "ja",
  "meta_lang": "en",
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  "updated": "2026-08-14",
  "license": "© 2026 Yutaka Sugiura. All rights reserved.",
  "attribution": "The社史 (the-shashi.com) — https://the-shashi.com/tse/4368/",
  "source": {
    "primary": [
      "有価証券報告書（沿革）"
    ],
    "extraction": "有価証券報告書の沿革を基礎に、社史・報道で補完",
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  "timeline": [
    {
      "date": "1957/6",
      "importance": 3,
      "event": "帝國製薬大阪工場を独立させ、扶桑化学工業を設立",
      "source": null
    },
    {
      "date": "1962/6",
      "importance": 1,
      "event": "大阪市淀川区に神崎川工場を設置",
      "source": null
    },
    {
      "date": "1962/9",
      "importance": 3,
      "event": "食品添加物「リンゴ酸」の製造開始",
      "source": null
    },
    {
      "date": "1966/5",
      "importance": 1,
      "event": "イソブチレン誘導体「樹脂添加剤」の製造開始",
      "source": null
    },
    {
      "date": "1973/1",
      "importance": 1,
      "event": "堺工場第1期工事が完成",
      "source": null
    },
    {
      "date": "1975/11",
      "importance": 2,
      "event": "ＦＤＡ規格の「リンゴ酸」の製造に成功",
      "source": null
    },
    {
      "date": "1982/9",
      "importance": 1,
      "event": "海苔の雑藻駆除剤「Ｗクリーン」を海苔養殖業界に販売",
      "source": null
    },
    {
      "date": "1984/6",
      "importance": 1,
      "event": "京都府福知山市に福知山工場第1期工事が完成",
      "source": null
    },
    {
      "date": "1986/6",
      "importance": 2,
      "event": "「クエン酸」の製造開始",
      "source": null
    },
    {
      "date": "1987/4",
      "importance": 1,
      "event": "「クエン酸ナトリウム」の本格販売開始",
      "source": null
    },
    {
      "date": "1987/8",
      "importance": 3,
      "event": "電子材料「コロイダルシリカ」の試験生産開始",
      "source": null
    },
    {
      "date": "1994/7",
      "importance": 1,
      "event": "85％出資により青島扶桑精製加工有限公司を設立",
      "source": null
    },
    {
      "date": "2001/5",
      "importance": 1,
      "event": "日本証券業協会に株式を店頭登録",
      "source": null
    },
    {
      "date": "2003/12",
      "importance": 3,
      "event": "藤沢薬品工業から国内化成品事業と米国PMP社を買収",
      "source": null
    },
    {
      "date": "2004/12",
      "importance": 1,
      "event": "ジャスダック証券取引所に株式を上場",
      "source": null
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    {
      "date": "2005/6",
      "importance": 1,
      "event": "京都工場の電子材料製造設備を増強",
      "source": null
    },
    {
      "date": "2007/12",
      "importance": 2,
      "event": "京都第二工場の電子材料製造設備が完成",
      "source": null
    },
    {
      "date": "2008/7",
      "importance": 1,
      "event": "ヤマノホールディングスからエックスワンの全株式を買収",
      "source": null
    },
    {
      "date": "2008/8",
      "importance": 1,
      "event": "全額出資によりFUSO (THAILAND) CO.,LTD.を設立",
      "source": null
    },
    {
      "date": "2008/12",
      "importance": 1,
      "event": "扶桑コーポレーション75％出資により海洋化学を設立",
      "source": null
    },
    {
      "date": "2014/2",
      "importance": 1,
      "event": "エックスワンの株式一部譲渡により連結子会社から除外",
      "source": null
    },
    {
      "date": "2014/10",
      "importance": 2,
      "event": "三井化学から有機酸事業を承継",
      "source": null
    },
    {
      "date": "2015/12",
      "importance": 1,
      "event": "公募増資により東京証券取引所市場第一部に指定替え",
      "source": null
    },
    {
      "date": "2017/11",
      "importance": 2,
      "event": "茨城県神栖市に鹿島事業所を開設",
      "source": null
    },
    {
      "date": "2018/6",
      "importance": 1,
      "event": "監査等委員会設置会社に移行",
      "source": null
    },
    {
      "date": "2018/9",
      "importance": 1,
      "event": "海洋化学の全株式譲渡により連結子会社から除外",
      "source": null
    },
    {
      "date": "2019/7",
      "importance": 1,
      "event": "鹿島事業所のリンゴ酸製造設備が完成",
      "source": null
    },
    {
      "date": "2022/4",
      "importance": 1,
      "event": "プライム市場に移行",
      "source": null
    },
    {
      "date": "2023/4",
      "importance": 3,
      "event": "鹿島事業所の超高純度コロイダルシリカ製造設備が完成",
      "source": null
    }
  ]
}