欧美a级片一区二区在线播放,欧美日韩激情精品蜜桃,国产初高中生视频在线观看,亚洲成av人片在线观看无

        <video id="cf4ok"><span id="cf4ok"></span></video>
        
        
      1. <source id="cf4ok"></source>
                  <source id="cf4ok"><noscript id="cf4ok"></noscript></source>
                1. Products

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

                  4-amino-5-methoxytoluene-2-sulphonic acid

                  Product name

                  4-amino-5-methoxytoluene-2-sulphonic acid

                  CAS No.

                  6471-78-9

                  Molecular formula

                  C8H11NO4S

                  Appearance

                  off-white powder

                  Purity

                  (wet)≥80% (dry) ≥98%

                  Applications

                  Used as a dye and organic pigment intermediate

                  Package

                   

                  As per customer’s requirements