• Formulating

  Is propylene glycol considered an emulsifier? HLB?

  Posted by ajw000 on January 29, 2021 at 12:16 pm

  When calculating HLB for an non-ionic O/W emulsion, should propylene glycol be factored as an emulsifier in the HLB calculation? 

  If so, is the HLB value 2.5? 

  I’ve found several conflicting pieces online some showing it as an emulsifier, others just calling it a humectant.

  OldPerry replied 4 years, 1 month ago 2 Members · 1 Reply
• 1 Reply

• 

  OldPerry

  Professional Chemist / Formulator

  January 29, 2021 at 2:24 pm

  No, propylene glycol is not considered an emulsifier.  It’s a humectant and also used as a solvent.

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