• Formulating

  HLB and choice of water/oil soluble emulsifier

  Posted by Rutuja on March 16, 2016 at 4:01 am

  Hi!
  I’m trying to formulate a cream(O/W emulsion). I have determined the required HLB of my oil phase and wanted to know, that when I try to match a blend of emulsifiers with this, should I go for oil soluble emulsifiers like PEG 40 or water soluble ones like polysorbates?

  Please help!
  Thanks!

  Rutuja replied 9 years, 1 month ago 3 Members · 5 Replies
• 5 Replies

• 

  Rutuja

  Member

  March 16, 2016 at 4:02 am

  Or can I used a combination of both oil and water soluble?

• 

  belassi

  Member

  March 16, 2016 at 5:47 am

  In general, try to combine a low HLB emulsifier such as glyceryl stearate with a high HLB emulsifier such as PEG-7 Glyceryl Cocoate.

• 

  Rutuja

  Member

  March 16, 2016 at 9:24 am

  Alright
  But in general,when we get the required HLB, is it alright if we use a combination of both water and oil based emulsifiers to meet the required HLB?
  Thanks!

• 

  OldPerry

  Professional Chemist / Formulator

  March 16, 2016 at 1:10 pm

  A combination would probably lead to a system with better stability.  But it really depends on the system and is only something that can be determined through testing.

• 

  Rutuja

  Member

  March 17, 2016 at 7:06 am

  Thanks a lot

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