• Formulating

  MAP (Magnesium Ascorbyl Phosphate) “Breaks” emulsion

  Posted by 726dbr on January 17, 2019 at 4:59 am

  Hi,
  I am trying to make a cream with 5% MAP (Magnesium Ascorbyl Phosphate).  I am using Olivem 1000 (8% for thickening) for Emulsifier and Shea Butter (5%) for Lipid.
  When I dissolve my MAP in the water it won’t emulsify.  If everything is the same and I remove the MAP it emulsifies just fine.  
  Any solution for this issue?
  I tried using 60% of the water for dissolving the MAP and adding it after the emulsion is formed, but then after a few hours some liquid comes out of the emulsified cream.

  726dbr replied 5 years, 10 months ago 4 Members · 4 Replies

  • emulsion-problem
  • magnesium-ascorbyl-phosphate
  • map
• 4 Replies

• 

  belassi

  Member

  January 17, 2019 at 6:21 am

  I believe people have commented before on this forum about the difficulties of using that emulsifier.

• 

  ngarayeva001

  Member

  January 17, 2019 at 7:03 am

  MAP isn’t easy to work with. It also reduces viscosity of polymers. I think you should change an emulsifier.

• 

  MarkBroussard

  Member

  January 17, 2019 at 11:50 am

  You’ll need a co-emulsifier for Olivem 1000.  It does not yield stable emulsions as a solo emulsifier.  Add Glyceryl Stearate at 2%.

  MAP should not be added at temperatures much above 40C, so best you add it it at cool down.

• 

  726dbr

  Member

  January 23, 2019 at 3:04 am

  Hi,
  Thanks for the suggestions, I ended up changing my Emulsifier, then it seemed to work just fine.  
  I read MAP is stable for 20 hours at 80C so adding it to water phase before cool down shouldn’t be a problem.  Anyway, It works both ways, I tried it each way after changing the Emulsifier.
  Thanks Again!

Log In to Reply