Quote Originally Posted by Photo Engineer View Post
I think that CMC "hardens" by a different method than most materials. It has 1 or 2 free organic acid groups per repeating unit, that can form a salt with some divalent ions or trivalent ions. So, Ca ++ or Mg ++ (Calcium or Magnesium) or Al +++ (Aluminum) can appear to crosslink CMS.

Thanks PE, even though I don't understand a thing you wrote Are you saying I cannot easily use it for sizing or coating are you saying it will work just fine as long as I use CA, MG, or AL of some sort? I really wish I had payed more attention to Mr. Marek back in my high school chemistry class!