(1) Hydrophilic-lipophilic balance
is used as a criterion for surfactant selection and was found to work well for many surfactants of different structures.
As it is known , oleic acid has hydrophilic-lipophilic balance
of HLB = 1.0 and, unlike SMO (where HLB = 4.3), cannot function as emulsifier of reverse emulsions because of preferential dissolution in hydrocarbon phase and low interphase activity (Table 1).
In 1996, Waters introduced the Oasis HLB (hydrophilic-lipophilic balance
), the first water wettable polymeric reversephased SPE sorbents.
This emulsifier is one with a fairly high hydrophilic-lipophilic balance
Pemulen EZ-4U polymeric emulsifier key benefits include: easier to use and faster to disperse relative to existing polymeric emulsifiers, thus reducing manufacturing complexity; thicken and stabilize oil-in-water emulsions at low use level; compatibility with a broad range of oils; no hydrophilic-lipophilic balance
calculation required; allows for cold or hot processing; greater formulation flexibility through minimized structuring over a wide pH range (4-9) leading to a smooth, appealing texture; refreshing light sensory with quick-break effect; wide variety of textures from a shiny, smooth cream to thin, sprayable lotion; and PEG-free and preservative-free; Mild emulsion stabilizer suitable for sensitive skin applications.
Sodium stearoyl-2-lactylate is an emulsifier with a very high hydrophilic-lipophilic balance
. It is an excellent emulsifier for fat-in-water emulsions.