啪啪A片大全免费,国内熟女啪啪自拍,A片毛片免费观看啪啪首页

<th id="ukhh4"><sup id="ukhh4"></sup></th>
    <center id="ukhh4"><small id="ukhh4"></small></center>
    <code id="ukhh4"></code>
    <object id="ukhh4"></object>

    <th id="ukhh4"></th>
  1. <big id="ukhh4"><em id="ukhh4"></em></big>
  2. <code id="ukhh4"><small id="ukhh4"><optgroup id="ukhh4"></optgroup></small></code>
  3. <del id="ukhh4"><small id="ukhh4"></small></del>
  4. <big id="ukhh4"><em id="ukhh4"></em></big>

    sell 4,4'-Dichlorodiphenyl sulfone

    4,4'-Dichlorodiphenyl sulfone is manufacturing polysulfone, polyether sulfone and other engineering plastics as the main raw material, and medicine, dyes and pesticides such as intermediates, in the field of engineering plastics and fine chemical has a widely used.

    4,4'-Dichlorodiphenyl sulfone

    Synonyms:Bis(4-chlorophenyl) sulfone; 4-Chloro-1-(4-chlorophenylsulfonyl)benzene; Sulfonyl-1,1'-bis(4-chlorobenzene)

    Molecular Formula:C12H8Cl2O2S

    Molecular Weight:287.16

    CAS Registry Number:80-07-9

    EINECS:201-247-9

    Melting point:146-151 oC

    Boiling point:397 oC

    Flash point:233 oC

    Water solubility:<0.1 g/100 mL at 20 oC

    Purity:99%

    4,4'-Dichlorodiphenyl sulfone is manufacturing polysulfone, polyether sulfone and other engineering plastics as the main raw material, and medicine, dyes and pesticides such as intermediates, in the field of engineering plastics and fine chemical has a widely used.


    啪啪A片大全免费,国内熟女啪啪自拍,A片毛片免费观看啪啪首页
    <th id="ukhh4"><sup id="ukhh4"></sup></th>
      <center id="ukhh4"><small id="ukhh4"></small></center>
      <code id="ukhh4"></code>
      <object id="ukhh4"></object>

      <th id="ukhh4"></th>
    1. <big id="ukhh4"><em id="ukhh4"></em></big>
    2. <code id="ukhh4"><small id="ukhh4"><optgroup id="ukhh4"></optgroup></small></code>
    3. <del id="ukhh4"><small id="ukhh4"></small></del>
    4. <big id="ukhh4"><em id="ukhh4"></em></big>