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RHLB or HLB
Good day,
I have a question, I’ve found some sources where GMS (Glyceryl Monostearate) is given an RHLB (required HLB) value as emollient and others where it has an HLB value as w/o emulsifier. My question is if under some circumstances, like an o/w emulsion formulation, it is necessary to consider both values for the RHLB/HLB calculation, or should be just considered his emulsifying ability as prioritary (only consider HLB).
Thanks for your reply! -
5 Replies
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Glyceryl Stearate is an emulsifier with an HLB of 3.8 in my experience. What source stated it had a require HLB?
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Microformulation said:Glyceryl Stearate is an emulsifier with an HLB of 3.8 in my experience. What source stated it had a require HLB?This one on page 6
https://books.google.fr/books/about/The_HLB_System.html?id=7KxuMwEACAAJ&redir_esc=y -
The ICI charts have been revised a bit by Croda. We no longer use an RHLB at least in my experience since 1984 when I learned this system in college. At least in the practical application of this system.Keep in mind that HLB is for nonionic emulsifiers and in my experience is of lesser value in the “natural” markets where ethoxylated compounds are avoided.
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Thanks for your answer Microformulation!
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