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How can tannic acid be used for a fabric to retain dye?

  1. Nov 17, 2015 #1
    The dye is Malachite green specifically.
    I understand that tannic acid has many hydrogen bonds making it very polar, but i don't understand how it is a mordant between a fibre and the dye.

    Any help is much appreciated.
  2. jcsd
  3. Nov 23, 2015 #2
    Thanks for the post! This is an automated courtesy bump. Sorry you aren't generating responses at the moment. Do you have any further information, come to any new conclusions or is it possible to reword the post?
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