Home Cosmetic Science Talk Formulating Why are they all calculating mole ratio wrong?

  • Why are they all calculating mole ratio wrong?

    Posted by Abdullah on November 14, 2024 at 12:38 am

    First i saw several SLS: cetearyl alcohol blends at 1:9 weight ratio claiming LGN formation. Now i saw this study that said ” 1:9 weight ratio of SLS: cetyl, stearyl or cetearyl alcohol has 1:5 mole ratio.”

    Why are they all calculating mole ratio of SLS: fatty alcohol wrong?

    https://pmc.ncbi.nlm.nih.gov/articles/PMC7557764/

    Aniela replied 1 week, 2 days ago 3 Members · 5 Replies
  • 5 Replies
  • chemicalmatt

    Member
    November 21, 2024 at 12:59 pm

    @Abdullah The researchers chose a 1:5 mole ratio perhaps arbitrarily. Regardless: thank you so much for sharing this article. It explains a lot about LLC formation with fatty alcohols. Many thanks to you my friend.

    • Abdullah

      Member
      November 21, 2024 at 8:18 pm

      You are welcome

    • Aniela

      Member
      November 23, 2024 at 6:34 am

      Hello @chemicalmatt ,

      and thank you @Abdullah for making my question possible.

      I’m not a chemist, therefore your help is much appreciated: after reading the article, my take is I’ll be better off (stability-wise) if using cetearyl alcohol instead of only cetyl alcohol.

      Is that right, or it largely depends on the emulsifier used?

      Thank you.

      • Abdullah

        Member
        November 24, 2024 at 10:31 pm

        Yes cetearyl alcohol is more stable

        • Aniela

          Member
          November 26, 2024 at 4:06 am

          Thank you.

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