• Formulating

  Comparation of two preservative blends for effectiveness

  Posted by Abdullah on April 14, 2023 at 5:44 am

  These two preservative blends have almost the same price.

  A

  0.9% phenoxyethanol

  0.1% ethylhexylglycerin

  B

  0.7% phenoxyethanol

  0.3% Phenethyl alcohol

  If i choose one to use with an anti fungal and EDTA in emulsion, which blend with have better preservation powder?

  Abdullah replied 1 year, 7 months ago 2 Members · 4 Replies

  • ethylhexylglycerin
  • phenethyl alcohol
  • preservative
• 4 Replies

• 

  PhilGeis

  Member

  April 14, 2023 at 5:54 am

  Prob not much difference but use the 1st - there are some data for EHG as booster. I’d drop the phenoxy to 0.5%.

  I don’t know why anyone would bother with Phenethyl alcohol as a preservative when they can use phenoxy.

  • 

    Abdullah

    Member

    April 14, 2023 at 10:05 am

    According to this chart, there is some synergy between phenoxyethanol and Phenethyl alcohol compared to phenoxyethanol alone. <div>

    What is your opinion about this chart?

    </div>

    

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• 

  PhilGeis

  Member

  April 14, 2023 at 1:13 pm

  Just sales literature

• 

  Abdullah

  Member

  April 15, 2023 at 12:53 am

  Thanks

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