What Is The HLB Value Of Tween 80?

Tween 80 has an HLB value of

15

, within the range of HLB 8–18 for oil-in-water (O/W) emulsifiers.

What is the HLB of Tween 20?

With this in mind, when you see that an ICI emulsifier such as TWEEN 20 polyoxyethylene (20) sorbitan monolaurate has an HLB value of

16.7

, you know that it is about 84% hydrophilic.

How do you calculate HLB of tweens?

Tweens, which are polyoxyethylene derivatives of spans, are hydrophilic and have high HLB values (9.6-16.7). In order to form stable emulsions, an emulsifier or emulsifier mixture having HLB value equal to the HLB value of the oil phase should be used.

HLB= E / 5

can be calculated with this equation.

What is HLB value of wetting agent with example?

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.

How do you calculate HLB?

1. Liquid paraffin 35/37 x 100 = 94.6% Wool fat. 1/37 x 100 = 2.7%
2. Cetyl alcohol 1/37 x 100 = 2.7% The total required HLB number is obtained as follows: …
3. Wool fat (HLB 10) 2.7/100 x 10 = 0.3. …
4. 2.7/100 X 15 = 0.4. Total required HLB.

What is Tween 80 used for?

Tween 80 (polysorbate 80, polyoxyethylene sorbitan monooleate) is a non-ionic surfactant that is widely used

as an emulsifier in cosmetics, pharmaceuticals and food products

. It is approved by the US Food and Drug Administration for use in up to 1% in selected foods (Chassaing et al., 2015).

Which is better TWEEN 20 or Tween 80?

Tween-80 (polyoxyethylene sorbitan monooleate) is oleate and Tween-20 (polyoxyethylene sorbitan monolaurate) is laurate. Tween 80 has a longer aliphatic tail and therefore more lipophilic.

Tween 20 is

the more hydrophilic.

What is Span and Tween?

The nonionic surfactant

sorbitan fatty acid esters

(Spans) and the polyoxyethylene (POE) sorbitan fatty acid esters (Tweens) have many potential pharmaceutical applications. … Surfactants stabilize emulsions by reduction of interfacial tension and formation of electrical or mechanical barriers.

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 method?

Hydrophile Lipophile Balance (HLB) is

a way of measuring a substances solubility within water or oil

. The HLB system was created as a tool to make it easier to use nonionic surfactants. The HLB system enables you to assign a HLB value to a surfactant and a HLB requirement to the application for that surfactant.

What is the HLB value of antifoaming agents?

The HLB value can be used to predict the surfactant properties of a molecule: < 10 : Lipid soluble (water insoluble) > 10 : Water soluble (lipid insoluble)

1.5 to 3

: anti-foaming agent.

What is the HLB value of detergent?

The HLB (hydrophilic/lipophilic/balance) number of a detergent is an

empirical measure of its relative hydrophobicity

. Detergent HLB numbers vary systematically with the length of the ethylene oxide chain for a homologous series of detergents such as the Triton X series.

What is HLB value of emulsifiers?

The HLB index is based upon the relative percentage of hydrophilic to lipophilic groups within the emulsifier molecule. The assigned values range from

1 to 20

. Lower HLB values indicate a more lipophilic emulsifier, whereas higher values indicate a more hydrophilic emulsifier.

What is emulsification agent?

An emulsifying agent (emulsifier) is

a surface-active ingredient which adsorbs at the newly formed oil–water interface during emulsion preparation

, and it protects the newly formed droplets against immediate recoalescence.

Is emulsion is thermodynamically stable?

From a purely thermodynamic point of view, an emulsion is an unstable system because there is a natural tendency for a liquid/liquid system to separate and reduce its interfacial area and, hence, its interfacial energy. However, most emulsions

demonstrate kinetic stability

(i.e., they are stable over a period of time).

What is the HLB value of SLS?