<strong id="u3o4u"><track id="u3o4u"></track></strong>

<dd id="u3o4u"><track id="u3o4u"><sup id="u3o4u"></sup></track></dd>
    1. <li id="u3o4u"><acronym id="u3o4u"><u id="u3o4u"></u></acronym></li>
    2. <tbody id="u3o4u"><track id="u3o4u"><i id="u3o4u"></i></track></tbody>
      <li id="u3o4u"><acronym id="u3o4u"><u id="u3o4u"></u></acronym></li>
      无码永久免费AV网站
      <strong id="u3o4u"><track id="u3o4u"></track></strong>

      <dd id="u3o4u"><track id="u3o4u"><sup id="u3o4u"></sup></track></dd>
      1. <li id="u3o4u"><acronym id="u3o4u"><u id="u3o4u"></u></acronym></li>
      2. <tbody id="u3o4u"><track id="u3o4u"><i id="u3o4u"></i></track></tbody>
        <li id="u3o4u"><acronym id="u3o4u"><u id="u3o4u"></u></acronym></li>
               4,4’-Diaminostilbene-2,2’-disulf..
               p-nitrotoluene-o-sulfonic acid ..
               4,4-Dinitrostilbene-2,2-disulfon..
               Aniline-2,5-disulfonic acid mono..
               Para Amino Azo Benzene 4 Sulfoni..
               4-aminobenzene-1,3-disulphonic a..
                More
          Products

        Chemical name:4,4’-Diaminostilbene-2,2’-disulfonic acid
        Structural formula: 
          
        Chemical formula: C14H14N2O6S2     
        Molecular weight: 370.4
        CAS NO.:81-11-8
        Property:
        1)Light yellow cream or powder, soluble in ethanol and ether; insoluble in water,
        easily soluble in alkaline solution.
        2)Can be easily oxidized into red; has the property of aromatic acid or aromatic amine
        Quality index:

        Item Index
        (1)Appearance dry/wet light yellow powder/light yellow cream
        (2)Dry product total amino value(gross dry sample)   ≥ 95.0%
        (3)Degree of pigmentation(EOD)             ≤ 0.12
        (4)Content of alkali insolubles (gross cream )    ≤ 0.08%
        (5)Benzyl compound(gross sample)       ≤ 0.25%
        (6)Ash content                ≤ 2.2%

        Main use: In the manufacture of fluorescent brighteming agent、Chrysophenine G
        and Direct Yellow R, also as pesticides
        Packing: dry product: in 25kg woven bags or upon clients' request; wet product:
        in 40kg woven bag or upon clients' request.