Salicylic acid

OladooOladoo Member
Please how can I dissolve salicylic acid without using alcohol?

Thanks

Comments

  • PhilGeisPhilGeis Member, Professional formulator
    use sodium salt
  • MarkBroussardMarkBroussard Member, Professional Chemist
    @Oladoo

    Dissolve the SA in 25-30% solvents ( some combination of Methylpropanediol, Pentylene Glycol, Propanediol, Butylene Glycol, or Methyl Gluceth-20 ) heated to 70C or so.  Prepare a heated water phase comprised of water + 1% Sodium Citrate.  You can also add-in 2.5:1 Cocamidopropyl Dimethylamine:SA to the water phase.

    Add the Glycol/SA solution to the water phase solution and allow to cool to RT.

    Finally, adjust the final pH of your concoction to 3.5 - 4.0
    Chemist/Microbiologist formulating in the Organic & Naturals arena under ECOCert/Natural Products Assn/Whole Foods/National Organic Program guidelines focused skincare & haircare products. 

    See website for details www.desertinbloomcosmeticslab.com
  • I use combination of propylene glycol and ethoxydiglycol at around 30% combined. The latter has less sticky feel. And Polysorbate 20 as a surfactant. 
    May I please ask the function of sodium salt?
  • AbdullahAbdullah Member
    @ngarayeva001 they convert salicylic acid to sodium salicylate
  • PhilGeisPhilGeis Member, Professional formulator
    the salt is soluble
  • OladooOladoo Member
    Thanks all. Your comments were very helpful
  • OladooOladoo Member
    How much Polysorbate 20 do I need to add? Though I have Polysorbate 80 @ngarayeva001
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