mineral oil hlb
It is easily soluble in water soluble in ethanol vegetable oil ethyl acetate methanol and insoluble in mineral oil. The most common type of emulsion is an oil in water with the less common being water in oil.
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A different RHLB is required to form an oil-in-water wo type emulsion with the same oil phase.
. 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. Both mixed surfactants have similar HLB value but emulsions using MS-02 was more stable. See below Before we label our variables we need to determine the mass of mineral oil used in the Rx.
B Determine the amount of Tween 60 HLB149 and Span 60 47 required to reach this HLB. Rx HLB Mineral Oil 50 wv 12 Cetyl alcohol 1g 15 Emulsifier 5 wv Water qs ad 120mL a Determine the required HLB. A specific HLB called.
The HLB scale ranges from 0 to 20 with 10 corresponding to an emulsifier that is equally attracted to water and oil. The system used is a wateroil system of mineral oilSMOnEO the OW ratio by weight is 11 and the concentration of the surfactant system is 2 of the total. Wetting powders into oils use surfactants with HLBs of 7 to 9 making self emulsifying oils use surfactants with HLBs of 7 to 10 making oil-in-water emulsions use surfactant blends with HLBs of 8 to16 making detergent solutions use surfactants with HLBs of 13 to 15 for solubilizing oils micro-emulsifying into water use surfactant blends with HLBs of 13 to 18.
So they are more hydrophilic having V higher HLB values ranging from 96 to 167. Curve D has been drawn following the SMOsat varying degrees of ethoxylation without mixing them. Necessary hydrophile-lipophilic balance RHLB.
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. Tween-80 is light yellow to amber oily viscose liquid non-toxic. 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.
Emulsifier cum lubricity additive. Emulsifiers with HLB values greater than 10 are more hydrophilic and thus better at stabilizing ow emulsions. Curve C was produced with mixtures of various composition.
HLB stands for Hyrdrophile Lipophile Balance. In this case the NHLBPIT relationship is very nearly linear. The term Hyrdophile refers to the formulas.
12 Although it might not be used as much today as in the past it still remains a valuable time-tested tool used by formulators to select the best surfactants from the many hundreds available to emulsify oils. In conclusion the ideal required HLB value of the oil phase is about 1085 and consequently surfactants with HLB of approximately 108 and 107 created the most stable formulations in this study. An HLB Calculator is one tool used in determining the emulsifiers used a formulation.
HLB is measured on a scale 0-20 with a few values higher than 20. Lets suppose that your oil phase contains. Tweens are polyoxyethylene derivatives of spans.
High HLB emusifier for mineral oils. From these results we found. HLB values for both emulsions of type ow and wo can be empirically determined for many oils and fats.
In contrast emulsifiers with HLB values less than 10 are more hydrophobic and therefore better suited for wo emulsions. This synthetic compound is a viscous water-soluble yellow liquid. Is required for the oil phase of an oil in water ow type emulsion.
Emulsifier cum lubricity additive. Surfactants of intermediate values have HLB values of between 9 and 11. 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.
The seleted surfactant andor co-surfactant. Griffin in the late 1940s the HLB System is one of the most successful strategies for developing stable emulsions. HLB value is 150.
Tween-80 molecular weight is 4286. 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. HLB values ranging from 18 to 86.
The oil phase is consisted of mineral oil. The Tween-80 is a nonionic surfactant and emulsifier. Created by William C.
Surfactants may be anionic. When a maker is faced with formulating an emulsion there are many different emulsifiers that can be used.
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