直拍偷拍 欧美_看91黄色的色色的视频_成人中出在线17c_亚洲 AV 色情无码

直拍偷拍 欧美_看91黄色的色色的视频_成人中出在线17c_亚洲 AV 色情无码

直拍偷拍 欧美_看91黄色的色色的视频_成人中出在线17c_亚洲 AV 色情无码_A黄色片_亚洲婷婷AV_超碰在线免费观看三级片

  • <big id="yd0sj"><i id="yd0sj"></i></big>
    <sub id="yd0sj"></sub>

    • Hotline:+86-15063219751 Email:Jacky@sdzmhg.com

      PRODUCTS

       
      Sodium salt of 1,2,3-Benzotriazole (BTA•Na)

      CAS No.  15217-42-2
      Molecular formula:C6H4N3Na       Molecular Weight: 141.11
      Specification:

      Items

      Index

      Appearance

      Pale yellow to yellow transparent liquid

      Solid content %

      50.0 min

      Density (20℃) g/cm3

      1.20 min


      Properties:
      BTA•Na can be absorbed on metal surface and form a thin film to protect copper and other metals.BTA•Na can be used together with many scale inhibitors and fungi disinfectants in circulating cool water system, and it has good corrosion inhibition effect in circulating cool water system. The dosage of 2-4mg/l is preferred. BTA•Na can also be used as anti-discolor agent, coating additive and luboil additive.
      Package and Storage:
      200L plastic drum, IBC(1000L), customers' requirement. Storage for six months in shady room and dry place.
      Synonyms:
      BTA•Na; sodium salt of 1,2,3-Benzotrialole;1,2-Aminoazophenylene;1,2,3-Triazaindene





      PRODUCTS
      CONTACT US

      Shandong Zhongmu Chemical Technology Co.,Ltd.
      Email:Jacky@sdzmhg.com
      Phone:+86-15063219751
      Wechat NO.:8615063219751
      Skype:live:c4766ed242012e57

      WECHAT
       
      Copyright@2020 : Shandong Zhongmu Chemical Technology CO.,ltd.    
      直拍偷拍 欧美_看91黄色的色色的视频_成人中出在线17c_亚洲 AV 色情无码
    • <big id="yd0sj"><i id="yd0sj"></i></big>
      <sub id="yd0sj"></sub>

      • 五月天精品婷婷性爱免费| 日韩Av传媒| 亚洲AV25页| 在线看A的网站| 欧美aA一级片一级片| 日韩免费看毛片| 色性爱AV| 少妇五月天Av| A片高清无码免费片| 东京热婷婷五月av| 黄色A级毛片| 色片av无码| A级成人片| 岛国av电影换卡2| 日韩国产三级91| 免费国产一级A片| 国内免费性爱小视频| 男女性生活和谐视频91| 黄色一极毛片| 亚洲AV视屏专区| 免费播放av网站的地址| 日本成人免费| 女人毛片| 青青草国产精品毛片| av性爱国产在线| 免费观看的av网站在线| 大陆黄色毛片| 手机国产av| 免费观看日韩一级裸体片| 亚洲高清不卡有码| 无码资源导航| 欧美久久一级视频| 精品成人A| AAA级黄片| 一级黄色影片69| 国产97视频精品二区| A级黄色片免费看| 搜日本特级黄毛片| 国产av网| 成人A V在线视频| a片网址在线|