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-BS

        Product name

        Naphthol AS-BS

        CAS No.

        135-65-9

        Molecular formula

        C17H12N2O4

        Appearance

        Light yellow powder

        Purity

        Assay: ≥99% (Min)     

        Insolubles:≦0.2% (Max)

        M.P

        ≥242°C(Min)

        Applications

        as an organic pigment intermediate

        Package

        25kgs pp woven bag