• Formulating

  HLB of dimethicone 5 or 9

  Posted by Abdullah on January 20, 2021 at 7:51 am

  When we search the internet about HLB, the HLB of dimethicone is 5 but in a file from lonza they said HLB of dimethicone is 9. Which one is correct? 

  Abdullah replied 3 years, 11 months ago 2 Members · 2 Replies

  • dimethicone
  • emulsion
  • hlb
• 2 Replies

• 

  Pharma

  Member

  January 20, 2021 at 7:39 pm

  Dimethicone doesn’t have a HLB, it has a required HLB for w/si and a different one for si/w. In addition to that, dimethicone isn’t one defined chemical molecule but can differ in length and even branching and that greatly affects rHLB. Both values could hence be true or false .

• 

  Abdullah

  Member

  January 22, 2021 at 6:33 am

  @Pharma thanks 
  I have purchased a few kgs of 5 cst dimethicone to reduce tackiness of this o/w lotion. I want to add it in %1 or 2. Here are the ingredients 

  Olive oil    %6 
  Petrolatum   %4 

  Emulsifiers 
  Polyglyceryl 4 Laurate
  Glyceryl Caprylate
  Glyceryl oleate

  Water and glycerin and xanthan gum and caprylhydroxamic acid 

  The required HLB for olive oil and petrolatum is 7. If i add dimethicone 5cst %2, should I acount it as 5 or 9 for better stability? 

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