Page 38 - Course Guide 2019
P. 38

Emulsions can also be formed by another technique called the HLB method. In this method,
               the HLB values of oil/fatty/waxy ingredients need to be known and compared with the HLB
               values of the emulsifying agents. The following table gives the HLB values of the emulsifying
               agents that can be used to form emulsions through this method.



                    Name (commercial)              Name (chemical)          HLB value     Physical appearance
                 Acacia                                 Acacia                  8.0
                 Glyceryl monostearate           Glyceryl monostearate          3.8
                 PEG 400 monooleate            Polyoxyethylene monooleate      11.4
                 PEG 400 monostearate         Polyoxyethylene monostearate     11.6
                 PEG 400 monolaurate          Polyoxyethylene monolaurate      13.1
                 Potassium oleate                   Potassium oleate           20.0
                 Sodium lauryl sulfate            Sodium lauryl sulfate        40.0
                 Sodium oleate                       Sodium oleate             18.0
                 Span 20                          Sorbitan monolaurate          8.6
                 Span 40                         Sorbitan monopalmitate         6.7
                 Span 60                         Sorbitan monostearate          4.7
                 Span 65                           Sorbitan tristearate         2.1
                 Span 80                          Sorbitan monooleate           4.3
                 Span 85                            Sorbitan trioleate          1.8
                 Tragacanth                           Tragacanth               13.2
                 Triethanolamine oleate          Triethanolamine oleate        12.0
                 Tween 20                       Polyoxyethylene sorbitan       16.7
                                                      monolaurate
                 Tween 21                       Polyoxyethylene sorbitan       13.3
                                                      monolaurate
                 Tween 40                       Polyoxyethylene sorbitan       15.6
                                                     monopalmitate
                 Tween 60                       Polyoxyethylene sorbitan       14.9
                                                     monostearate
                 Tween 61                       Polyoxyethylene sorbitan        9.6
                                                     monostearate
                 Tween 65                       Polyoxyethylene sorbitan       10.5
                                                       tristearate
                 Tween 80                       Polyoxyethylene sorbitan       15.0
                                                      monooleate
                 Tween 81                       Polyoxyethylene sorbitan       10.0
                                                      monooleate
                 Tween 85                       Polyoxyethylene sorbitan       11.0
                                                        trioleate
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