Manufacture of oxalic acid dihydrate
    2.
    发明授权
    Manufacture of oxalic acid dihydrate 失效
    草酸二水合物的制造

    公开(公告)号:US07244862B2

    公开(公告)日:2007-07-17

    申请号:US11228378

    申请日:2005-09-16

    IPC分类号: C07C55/06

    摘要: A process for the manufacture of oxalic acid dihydrate in which an aqueous solution of sodium oxalate is contacted with hydrochloric acid and the resulting mixture then cooled to precipitate oxalic acid, followed by optional recovery and recycling of the sodium oxalate and hydrochloric acid into the reaction chamber.

    摘要翻译: 制备草酸二水合物的方法,其中草酸钠水溶液与盐酸接触,然后将所得混合物冷却以沉淀草酸,然后任选地将草酸钠和盐酸回收并再循环到反应室中 。

    Manufacture of oxalic acid dihydrate
    3.
    发明授权
    Manufacture of oxalic acid dihydrate 失效
    草酸二水合物的制造

    公开(公告)号:US07405322B2

    公开(公告)日:2008-07-29

    申请号:US11724720

    申请日:2007-03-16

    IPC分类号: C07C55/06

    摘要: A process for the manufacture of oxalic acid dihydrate in which an aqueous solution of sodium oxalate is contacted with hydrochloric acid and the resulting mixture then cooled to precipitate oxalic acid, followed by optional recovery and recycling of the sodium oxalate and hydrochloric acid into the reaction chamber.

    摘要翻译: 制备草酸二水合物的方法,其中草酸钠水溶液与盐酸接触,然后将所得混合物冷却以沉淀草酸,然后任选地将草酸钠和盐酸回收并再循环到反应室中 。