Home Cosmetic Science Talk Formulating How to prevent Tetrasodium EDTA from crystalization

  • How to prevent Tetrasodium EDTA from crystalization

    Posted by Abdullah on December 31, 2022 at 6:20 am

    I have a product with simple 0.3% EDTA + preservative in water pH 5.1. it is stable but now at temperature sometimes -10°c EDTA crystalizes.

    How to prevent EDTA from crystalization In cold weather like -10°c? 

    ketchito replied 1 year, 5 months ago 3 Members · 3 Replies
  • 3 Replies
  • Graillotion

    Member
    December 31, 2022 at 9:27 am

    I found the easiest way…was to use GLDA.  :D 

  • Abdullah

    Member
    December 31, 2022 at 9:59 am

    I found the easiest way…was to use GLDA.  :D 

    It is not available locally unfortunately

  • ketchito

    Member
    December 31, 2022 at 12:06 pm

    @Abdullah Did you reduce the pH of your solution? Tetrasodium EDTA in water has a pH closer to 11. At a pH of 5.1, you have a different species which is less soluble in water. You could increase pH to prevent precipitation.

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