mineral oil hlb
HLB values 3-8 are water in oil emulsifiers. For the same oil the required HLB value for OW emulsion is higher than the required HLB value for WO emulsion.
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Curve D has been drawn following the SMOsat varying degrees of ethoxylation without mixing them.
. If a particular surfactant has an HLB value below 9 it is considered low and if the HLB value is above 11 it is considered high. So the oil phase makes up 20 of the formulation so. The ratios of mineral oil and water are needed to specify first in order to know types of emulsifier you would like to get Winsor Type I or II or else.
The current study aims to utilize the concept of the hydrophiliclipophilic balance HLB value of ingredients for the development of a stable emulsion-based moisturizing cream and lotion for cosmetic application. 15 ----- Stearyl alcohol. Is required for the oil phase of an oil in water ow type emulsion.
The term Hyrdophile refers to the formulas water compatibility while Lipophile refers to the oil compatibility. A different RHLB is required to form an oil-in-water wo type emulsion with the same oil phase. The average HLB required to make an oil in water emulsion of mineral oil is 12.
Using equal volumes of heavy mineral oil and distilled water prepare 100 ml of an ow emulsion using a blend of nonionic surfactants Spans Tweens. The HLB values of some of the most frequently used surfactants are shown in Table 111. The system used is a wateroil system of mineral oilSMO nEO the OW ratio by weight is 11 and the concentration of the surfactant system is 2 of the total.
All emulsifiers have a hydrophilic head water loving that is generally composed of a water soluble functional group. HLB - The HLB value for the ingredient. Balance refers to the ratio between the oil and water.
To calculate the required HLB of the Oil Phase we multiply the percentage of each oil in the Oil Phase by its respective required HLB and sum the results. Isopropyl Myristate 11520 5 Isopropyl Myristate accounts for a HLB of 2. Surfactants of intermediate values have HLB values of between 9 and 11.
B Determine the amount of Tween 60 HLB149 and Span 60 47 required to reach this HLB. The combination of a hydrophilic and lipophilic emulsifier such as glyceryl stearate HLB value 38 and PEG-100 stearate HLB value 188. Rx HLB Mineral Oil 50 wv 12 Cetyl alcohol 1g 15 Emulsifier 5 wv Water qs ad 120mL a Determine the required HLB.
WHLBWeighted HLB - The HLB contribution to the total for the ingredient. 30 X Required HLB 14 42 Cottonseed Oil. 90100 X 7 09 X 7 63 10100 X 155 01 X 155 155 The required HLB of our oil phase is the sum of these numbers or 785 Lets make the Oil Phase more complex.
Record the proportions and amounts of each surfactant you used. Necessary hydrophile-lipophilic balance RHLB. In this case the N HLBPIT relationship is very nearly linear.
14 ----- Lanolin anhydrous. Emulsifiers with HLB values greater than 10 are more hydrophilic and thus better at stabilizing ow emulsions. In contrast emulsifiers with HLB values less than 10 are more hydrophobic and therefore better suited for wo emulsions.
2 calculated ideal RHLB of the oil phase is 1085. 50 X Required HLB 6 30. Mineral oil light.
1220 5 beeswax accounts for a HLB of 3 in this formulation. Almond Oil 620 10 Almond Oil accounts for a HLB of 3 in this formulation. 14 ----- Beeswax.
HLB TOTAL OF OIL PHASE FOR THAT INGREDIENT. A specific HLB called. The length of the alkyl chain influences the CMC and HLB value and these become important considerations when selecting the right chemical-type for your emulsion.
HLB is measured on a scale 0-20 with a few values higher than 20. Select your oil phase and determine its Required HLB from the table4 Mineral Spirits. The seleted surfactant andor co-surfactant.
See below Before we label our variables we need to determine the mass of mineral oil used in the Rx. The HLB scale ranges from 0 to 20 with 10 corresponding to an emulsifier that is equally attracted to water and oil. Calculations for HLB of this unique blend Oil phase ingredient contribution X required HLB of ingredient equals Mineral oil 500 105 5250 Caprylic cap.
14 HLB Value The hydrophilic-lipophilic balance system or HLB was created by William Griffin as a way of figuring out which emulsifier would work best with the oil phase of an emulsified product. The oil phase is consisted of mineral oil rHLB 11 octyldodecyl myristate RHLB 75 Cetyl alcohol RHLB 155 and propylparaben. Total required HLB number Mineral oil 946100 x 12 114 Wool fat 27100 x 10 03 Cetyl alcohol 27100 x 15 04 Total required HLB 121 This formulation requires an emulsifying agent blend of HLB 121 sorbitan monooleate 43 polyoxyethylene sorbitan monooleate 15.
Each RHLB value of oil components is found from literature. 125 5 0625 Isopropyl isostearate 125 115 1437 Cetyl alcohol 250 155 3875 Total 112.
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