Home Cosmetic Science Talk Formulating EDTA gel viscosity problem

  • EDTA gel viscosity problem

    Posted by amitvedakar on September 28, 2023 at 3:36 am

    Made Gel of

    PEG 400 50%, PEG 4000 25%, EDTA 15%, UREA 5%, H2O2-5%.

    After week it’s losses viscosity.

    Any guesses?? pH= 7.2

    can adding ACID phoshate help?

    same also made of HEC gel also loosing viscosity.

    amitvedakar replied 1 week, 3 days ago 4 Members · 8 Replies
  • 8 Replies
  • gordof

    Member
    September 28, 2023 at 6:48 am

    Hmm wear is the gelling agent? you are just creating Viskosity by adding high melting PEG 4000 aren’t you? i would gues you destroy your PEG cains with the high potent Urea hydrogen peroxide you are Greeting with this mixture.

    However, what is the purpose of this formulation? is that a cosmetic product or a bleaching agent? Combining urea and H2O2 will lead to the formation of Urea hydrogen peroxide (CH6N2O) which is a very potent Bleaching product what are the 15 % EDTA for ?

    • amitvedakar

      Member
      September 29, 2023 at 3:35 am

      It’s a dental product.

      • amitvedakar

        Member
        September 30, 2023 at 12:40 am

        Teeth Whitening.

  • naufal

    Member
    May 9, 2024 at 1:17 pm

    Did to dissolved peg 4000 or melted it?

    • amitvedakar

      Member
      May 10, 2024 at 3:18 am

      PEG-400 & 4000 melted together. I think pH roll is important here. I try keeping different different pH.

      • naufal

        Member
        May 12, 2024 at 5:16 am

        keep me updated i am trying to make edta gel for dental use.

  • chemicalmatt

    Member
    May 14, 2024 at 3:49 pm

    I am with gordof here: why so much EDTA? It doesn’t make any sense. Is there a decimal point missing? Also not especially safe orally.

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