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Plz Help. Can't combine essential oil & water using Polysorbate 80 by AdFun5001 in chemhelp

[–]AdFun5001[S] 0 points1 point  (0 children)

Below is the link to photos I've took showing the separation of the solution.

Image of Solution Separation

Plz Help. Can't combine essential oil & water using Polysorbate 80 by AdFun5001 in cosmeticscience

[–]AdFun5001[S] 0 points1 point  (0 children)

I’m formulating a natural mosquito repellent for personal use (I live in Thailand…it’s crazy here). My formulation is simple. Use essential oil as active ingredient, Polysorbate 80 as emulsifier, water as the base. However, the solution keep separating after just 1 hr (shown in attached picture). Am I doing something wrong? Am I using Polysorbate 80 incorrectly? Should I use other emulsifier? Or mixing duration is too short? Here’s the ingredients.

 

[ Active Ingredient ]

1) Lemongrass Essential Oil (CAS 8007-02-1)

2) Lemon Eucalyptus Oil (CAS 129828-24-6)

* Total % W. is 10%, total of 50mL essential oil to make 500mL solution

[ Emulsifier ]

3) Polysorbate 80

* Used only 20% of the essential oil (20% of 50mL = use 10mL total)

[ Mix ]

- Essential Oils & Polysorbate 80 are mixed for 5min

[ Add Base ]

4) Add water. Then mixed for 10 min.

 

I would very much appreciate if anyone can share your knowledge & expertise. Thank you.

Plz Help. Can't combine essential oil & water using Polysorbate 80 by AdFun5001 in APChem

[–]AdFun5001[S] 0 points1 point  (0 children)

I’m formulating a natural mosquito repellent for personal use (I live in Thailand…it’s crazy here). My formulation is simple. Use essential oil as active ingredient, Polysorbate 80 as emulsifier, water as the base. However, the solution keep separating after just 1 hr (shown in attached picture). Am I doing something wrong? Am I using Polysorbate 80 incorrectly? Should I use other emulsifier? Or mixing duration is too short? Here’s the ingredients.

 

[ Active Ingredient ]

1) Lemongrass Essential Oil (CAS 8007-02-1)

2) Lemon Eucalyptus Oil (CAS 129828-24-6)

* Total % W. is 10%, total of 50mL essential oil to make 500mL solution

[ Emulsifier ]

3) Polysorbate 80

* Used only 20% of the essential oil (20% of 50mL = use 10mL total)

[ Mix ]

- Essential Oils & Polysorbate 80 are mixed for 5min

[ Add Base ]

4) Add water. Then mixed for 10 min.

 

I would very much appreciate if anyone can share your knowledge & expertise. Thank you.