Indicator dye
    6.
    发明授权
    Indicator dye 失效
    指示剂染料

    公开(公告)号:US4013414A

    公开(公告)日:1977-03-22

    申请号:US574725

    申请日:1975-05-05

    IPC分类号: G01N31/22 G01N31/00

    CPC分类号: G01N31/221 G01N31/22

    摘要: A novel class of soluble organic nitrogen compounds which produces various colors when dissolved in organic liquid solvents. These dyes produce a color from blue to red if the organic liquid medium has a neutral or basic pH which reversibly changes to yellow if the liquid medium has an acid pH. The color variation can also serve as an indication of solvent polarity.

    摘要翻译: 一类新颖的可溶性有机氮化合物,当溶解在有机液体溶剂中时产生各种颜色。 如果有机液体介质具有中性或碱性pH,如果液体介质具有酸性pH,这些染料可以可逆地变为黄色,从蓝色到红色产生颜色。 颜色变化也可以作为溶剂极性的指示。