• Formulating

  Best Preservative for Dishwash soap

  Posted by nikolatesla23 on July 2, 2020 at 4:40 pm

  Hi everyone!
  I recently made a batch of dishwash soap for my small business. As a preservative, I used Methyl Paraben (1 gram for every liter of dishwash soap, about 0.1%).
  However, the cost of it kills me. Is there a cheaper and alternative preservative that is safe and as effective as Methyl Paraben?
  Also, out of topic, what is the recommended amount of EDTA tetrasodium in dishwash soap ?(in my formulation, its 0.1%. Is this enough?)

  Thank you in advance!

  Farrukh replied 4 years, 4 months ago 3 Members · 3 Replies

  • formula development
  • formulation
  • preservatives
  • soap
• 3 Replies

• 

  chemicalmatt

  Member

  July 2, 2020 at 9:07 pm

  Isothiazolinones…BIT in the parlance of the HI&I world…at 0.10%. Done. Also, double that EDTA unless you wash dishes in the woods, then triple it.

• 

  nikolatesla23

  Member

  July 3, 2020 at 1:33 pm

  Thank you @chemicalmatt. I’ll check my local suppliers if they sell Isothiazolinones. 

• 

  Farrukh

  Member

  August 1, 2020 at 1:54 pm

  Formaldehyde is a cheap preservative for dish soap

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