A mixture of 70%Tween 60 and 30%Span 65 was found to give optimum stability to a particular emulsion system. composition of a mixture of sodium dodecyl sulfate and cetyl alcohol should be expected to produce What the same result? In what proportion should Span 80 and Tween 80 be mixed to obtain “required" HLB of 12.0? You were asked to raise the HLB of the previous mixture by three units. Give three suggestions of achieving this using Tween 20 and sodium oleate as additives?
A mixture of 70%Tween 60 and 30%Span 65 was found to give optimum stability to a particular emulsion system. composition of a mixture of sodium dodecyl sulfate and cetyl alcohol should be expected to produce What the same result? In what proportion should Span 80 and Tween 80 be mixed to obtain “required" HLB of 12.0? You were asked to raise the HLB of the previous mixture by three units. Give three suggestions of achieving this using Tween 20 and sodium oleate as additives?
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Transcribed Image Text:Commonly Used Emulsifiers And Their HLB Values
Commercial Name
Chemical Name
HLB Value
Glyceryl mono stearate Glyceryl mono stearate
PEG 400 Monoleate
3.8
Polyoxyethylene monooleate
PEG 400 Monostearate Polyoxyethylene monostearate
PEG 400 Monolaurate Polyoxyethylene monolaurate
Potassium oleate
11.4
11.6
13.1
Potassium oleate
20.0
40
Sodium lauryl sulfate Sodium lauryl sulfate
Sodium oleate
Sodium oleate
18
Span® 20
Span® 40
Span® 60
Span® 65
Span® 80
Span® 85
Triethanolamine oleate Triethanolamine oleate
Tween® 20
Tween® 21
Tween® 40
Tween® 60
Sorbitan monolaurate
Sorbitan monopalmitate
8.6
6.7
Sorbitan monoste arate
4.7
Sorbitan tristearate
2.1
Sorbitan monooleate
Sorbitan trioleate
4.3
13.2
12
Polyoxyethylene sorbitan monolaurate
Polyoxyethylene sorbitan monolaurate
Polyoxyethylene sorbitan monopalmitate 15.6
Polyoxyethylene sorbitan monoste arate 14.9
Polyoxyethylene sorbitan monoste arate 9.6
Polyoxyethylene sorbitan tristearate
Polyoxyethylene sorbitan monooleate
Polyoxyethylene sorbitan monooleate
Polyoxyethylene sorbitan trioleate
16.7
13.3
Tween® 61
Tween® 65
Tween® 80
10.5
15.0
Tween® 81
Tween® 85
10.0
11.0
Transcribed Image Text:A mixture of 70%Tween 60 and 30%Span 65 was found
to give optimum stability to a particular emulsion system.
What composition of a mixture of sodium dodecyl
sulfate and cetyl alcohol should be expected to produce
the same result?
In what proportion should Span 80 and Tween 80 be
mixed to obtain “required" HLB of 12.0?
You were asked to raise the HLB of the previous mixture
by three units. Give three suggestions of achieving this
using Tween 20 and sodium oleate as additives?
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