What is the HLB of Span 80?
What is the HLB of Span 80?
4.3
Span 80 has an HLB value of 4.3, which falls within the usual range of HLB 4–6 for water-in-oil (W/O) emulsifiers.
How do you calculate HLB value of cream?
HLB= E / 5 can be calculated with this equation. E: Percentage by weight of ethyleneoxide • HLB value of fatty acid esters of polyhydric alcohols such as glyceryl monostearate, HLB= 20 [1-(S / A)] is calculated with that equation. The HLB values of some of the most frequently used surfactants are shown in Table 11.1.
How do you calculate HLB of surfactants?
Take, for example, a surfactant with an HLB value of 9.8 which is not soluble in water. The solution is to blend two surfactants of known HLB, one high and one low. Using the following equation: HLB desired = ( % surfactant A ) × ( HLB Surfactant A ) + ( % surfactant B ) × ( HLB Surfactant B . )
What is the HLB of sodium lauryl sulphate?
40
In addition, SLS has a very high HLB value of 40 meaning it is water soluble and it prefers to form o/w emulsions.
What does HLB value indicate?
Hydrophilic–lipophilic balance (HLB) is the balance of the size and strength of the hydrophilic and lipophilic moieties of a surfactant molecule. The HLB scale ranges from 0 to 20. In the range of 3.5 to 6.0, surfactants are more suitable for use in W/O emulsions.
What is the HLB value of detergent?
The calculated HLB values from both methods can be used to predict the surfactant properties of a surfactant molecule, where a value from 1 to 3 indicates a antifoaming agent; a value from 3 to 6 indicates a W/O emulsifier; a value from 7 to 9 indicates a wetting agent; a value from 8 to 12 indicates an O/W emulsifier; …
What is the HLB value for detergents?
What is the HLB value of wetting agent?
Wetting agents have an HLB between 6 and 9, indicating a slightly higher molecular weight of the non-polar, hydrophobic part. In a bi-phase system they concentrate at the interface between both phases e.g. liquids, solids or air and thereby lower the surface tension between them.
What is HLB value of a surfactant?
What is the HLB value of wetting agents?
between 6 and 9
Wetting agents have an HLB between 6 and 9, indicating a slightly higher molecular weight of the non-polar, hydrophobic part. In a bi-phase system they concentrate at the interface between both phases e.g. liquids, solids or air and thereby lower the surface tension between them.
What is HLB value of surfactants?
What is HLB value of SLES?
Commonly Used Emulsifiers And Their HLB Values
| Commercial Name | Chemical Name | HLB Value |
|---|---|---|
| Potassium oleate | Potassium oleate | 20.0 |
| Sodium lauryl sulfate | Sodium lauryl sulfate | 40 |
| Sodium oleate | Sodium oleate | 18 |
| Span 20 | Sorbitan monolaurate | 8.6 |
What is the HLB value of sorbitan mono oleate?
Sorbitan monooleate is a W/O emulsifier with an sorbitan monooleate HLB value of 4.3. Our sorbitan monooleate is one of the most popular surfactants as it has various functions in the formulations of food, pharmaceutical, cosmetics, textile, metal processing, etc. Sorbitan monooleate is commonly used in combination with polysorbate 80.
What kind of emulsifier is sorbitan monooleate?
Sorbitan monooleate (Span 80), 1338-43-8. Product description: Light yellow viscose oily liquid, insoluble in water, soluble in organic solvents, it is water/oil type emulsifier, can be mixed with emulsifier S-60 and emulsifier T-60. HLB: 4.3.
What is the value of HLB in emulsifiers?
• Measures the degree to which the emulsifier is hydrophilic or lipophilic. • The value of HLB ranges from 1- 20. • Low HLB emulsifiers are soluble in oil. • High HLB emulsifiers are soluble in water.
How are HLB values used to determine surfactants?
NUCLEAR MAGNETIC RESONANCE CHEMICAL SHIFT VALUES WERE USED IN DETERMINATION OF HLB VALUES FOR SURFACTANTS: CHOLESTEROL & ITS ESTER, TWEENS, & SPANS. Reported as not meeting GHS hazard criteria by 1161 of 1163 companies (only ~ 0.2% companies provided GHS information). For more detailed information, please visit ECHA C&L website.