久久精品人人爽人人爽快,久久精品国产欧美日韩99热,免费大片黄在线观看18不卡,97碰对免费精品视频

    <pre id="ktdo6"></pre>
    <menu id="ktdo6"></menu>
    <menu id="ktdo6"><tt id="ktdo6"></tt></menu>
      1. Products

        People oriented, science and technology first, and win-win cooperation

        Naphthol AS-PH

        Product name

        Naphthol AS-PH

        CAS No.

        92-74-0

        Molecular formula

        C19H17NO3

        Appearance

        Beige powder

        Purity

        Assay: ≥99.5% (Min)     

        Insolubles:≦0.1% (Max)

        M.P

        ≥156°C(Min)

        Applications

        as an organic pigment intermediate

        Package

        25kgs pp woven bag