• Formulating

  preservative question

  Posted by chemnc on March 13, 2017 at 6:54 pm

  Making Cosmetics has Benzylalcohol-DHA listed with a maximum formulating temperature of 40oC. I find that strange because a hot summer day can be higher than 40oC. I wasn’t able to confirm this anywhere else. Does anybody know whether this is correct?

  David replied 7 years, 8 months ago 2 Members · 1 Reply

  • preservatives
• 1 Reply

• 

  David

  Member

  March 13, 2017 at 11:55 pm

  Indications for use of e.g. quite similar Euxyl K 903 from S & M answers both your questions;

  “When using euxyl® K 903 prolonged heating periods (max. 4
  hours) > 80 °C should be avoided.
  It is advantageous to add euxyl® K 903 in the cooling phase e.g.
  with the fragrance (t < 40 °C). “

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