<blockquote id="2qysx"><acronym id="2qysx"></acronym></blockquote>
<tr id="2qysx"><option id="2qysx"></option></tr>

<big id="2qysx"></big>
  • <thead id="2qysx"><option id="2qysx"></option></thead>

    <th id="2qysx"><video id="2qysx"></video></th>

    <del id="2qysx"><small id="2qysx"></small></del>
  • <th id="2qysx"><option id="2qysx"></option></th>

    <center id="2qysx"><small id="2qysx"></small></center>
  • <code id="2qysx"><small id="2qysx"><track id="2qysx"></track></small></code>

      1. <center id="2qysx"><small id="2qysx"></small></center>
        
        <big id="2qysx"><nobr id="2qysx"></nobr></big>
      2. <big id="2qysx"></big>

      3. 老年人牲交全程_国产口爆吞精在线视频2020版_护士巨好爽好大乳_城中村勾搭老熟女啪啪
         
        Today is:

        Products

        2-Butyne-1,4-diol


        Trade name: 1,4-butynediol 1,4-butynediol
        Molecular formula: C4H6O2
        Structural formula: OHH2C-C ≡ C-CH2OH
        Physical and chemical properties: industrial butyne diol appearance was amber or brown, pure solid as colorless crystals or slightly yellow crystals. A melting point of 58 ℃, a boiling point of 238 , a flash point of 152 and a natural point of 248 ℃.

        Industrial Butylene Glycol:

        project
        index
        Qualified product
        Butyne diol content%
        4 5.00~ 80.00
        Formaldehyde content% ≤
        0.5
        PH value ≥
        7
        Propynol content% ≤
        0.25

        Application: It can be used in the manufacture of a series of important organic chemical products such as 1,4-butenediol, 1,4-butanediol, n-butanol, tetrahydrofuran, Y-butyrolactone and pyrrolidone and can be used in the production of synthetic fiber , Artificial leather, medicine, pesticides, solvents and preservatives. Butylene glycol itself is a good solvent, you can also do in the electroplating industry brightener.

        Packing: iron drum, 200kg / barrel.

        Note: try to avoid contact with the human body.

         

        Last page:1,4-Butenediol (Crude) Next page: Propargyl alcohol