色欲久久久天天天综合网|丝袜亚洲中文字幕一区| 99国产精品久久久久精品三级| 久久精品国产亚洲精品2020|

  • <dd id="miqca"><strong id="miqca"></strong></dd>
    <menu id="miqca"></menu>
  • <menu id="miqca"></menu>
  • <nav id="miqca"></nav>
  • Post Code: 411400
    Url: www.observbsc.com
    Sales Manager:Pan Xiaoling 013507333157 (Cellphone)
    Tel:+86-731-56295938 56295899
    Fax:+86-731-56295938
    E-mail:sales@chinacvl.com
     

    Crystal Violet Lactone

    Chemical name: 6-(Dimethylamino)-3,3-bis(4-(dimethylamino)phenyl)-1(3H)-isobenzofuranone
     

    Molecular formula: C26H29N3O2

    Molecular weight: 415.53

    structure:

    Specification:

    Appearance White to flavescent powder
    Purity (%) ≥96
    Total colorless dye (%) ≥97
    Color intensity (%) ≥97 (as compared with reference standard)
    Diarylethane insolube substances (%) ≤0.2
    mp (°C) ≥178
    Volatile substances (%) ≤0.1

    Use: dark blue press-sensitive and heat sensitive dyes for press-sensitive action paper and carbonless copying paper.
     

    Packaging: Double plastic lined paper drum, net weight 20Kg or 25 Kg.

     

     

  • <dd id="miqca"><strong id="miqca"></strong></dd>
    <menu id="miqca"></menu>
  • <menu id="miqca"></menu>
  • <nav id="miqca"></nav>