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Home Cosmetic Science Talk Advanced Questions Is it ok to blend kathon cg with water and store for ease of use?

  • Is it ok to blend kathon cg with water and store for ease of use?

    Posted by Abdullah on January 20, 2022 at 3:32 pm

    I want to use 0.75ppm MIT MCIT with 0.07% formalin in shampoo. This would equal to about 0.1% Lonzaserve PC. As this amount of MIT MCIT is too small i want to dilute the preservative that has 1.5% active with 19 parts water and 1 part preservative. This will give a solution of 750ppm MIT MCIT. I will then use this solution at 0.1% to get 0.75ppm MIT MCIT.

    My question is: is it ok to dilute 1 part kathon cg with 19 parts water and store it in order to make it easier to use in small quantities? 

    Abdullah replied 1 year ago 2 Members · 4 Replies
  • 4 Replies
  • PhilGeis

    Member
    January 20, 2022 at 4:26 pm

    No it is not.  MCIT of Kathon CG is stabilized in Mg salt solution - it is unstable in water dilution.

    Please don’t get carried away with supplier claims of remarkable “synergy”.   Like the dubious “broad spectrum” - they’re marketing driven.

  • Abdullah

    Member
    January 20, 2022 at 4:30 pm

    PhilGeis said:

    No it is not.  MCIT of Kathon CG is stabilized in Mg salt solution - it is unstable in water dilution.

    Thanks

  • Abdullah

    Member
    January 20, 2022 at 4:34 pm

    @PhilGeis so what is the difference when it is diluted in surfactant solution vs only water solution?

    How is it stable in surfactant solution? 

  • PhilGeis

    Member
    January 20, 2022 at 4:45 pm

    Typically is stable in surfactant solution.  Water solution is the problem.

  • Abdullah

    Member
    January 22, 2022 at 5:27 am

    PhilGeis said:

    Typically is stable in surfactant solution.  Water solution is the problem.

    Thanks