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Gel based Hand sanitizer
Hi Hari thiagarajan,
I have 22 years experience in Herbal extract ,fine chemical and speciality chemicals.
I have handled various tasks,supply chain ,product formulation,quality control ,product management and Environmental.
Now i doing lab trial for gel based (carbomer), it is working up to 60% IPA when I adding more than that the gel is breaking and become precipitate and settling.
Kindly give me your suggestion how can I prepare 70 to 75 % IPA. Which is mandatory.
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36 Replies
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Use neutrol TE by BASF as neutralizer, or use ANGUS brand AMP 95. It can neutralize and thicken carbomer even with 90% alcohol content. Hope this helps
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I have add 0.3% TEA for neutralization it is working up to 60% IPA more than that not working.
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what is the percentage of carbomer
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0.4 used
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25% water,because as per our norms we should use min.70%IPA in the formulation
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It depends on the carbomer type and what are you neutralizing with.
You should post the full formula if you need a specific help. -
Surely will send it
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Formula,we need min 70%IPA content.
So water used around 24% and 75% IPAWater 23.70
Carbomer. 0.35
IPA. 75.00
TEA. 0.25
Glycerine. 0.30
Colour. 0.20
Perfume. 0.20 -
Sorry PG missed in the above formula
Water 23.20
Carbomer. 0.35
PG. 0.50
IPA. 75.00
TEA. 0.25
Glycerine. 0.30
Colour. 0.20
Perfume. 0.20 -
Here is a nice working formula:
Even has the instructions….from a great company.
70%https://www.floratech.com/PDFs/Formulary/CleansersToners/C028.pdf
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Thanks,it is Ethanol based but I am trying with IPA
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hrajan said:Surely will send it
Great.
There are several ways to prepare the gel, the difference is minimal in industrial equipment.
Add IPA (try first with 70%) and water and mix. After that add carbomer (try with 0.5%) and disperse it. It depends on the carbomer you have, 940 and 980 should do the job. Once the carbomer is very well dispersed add TEA till the pH is 6.5 (6-7). After that, you can add PG and glycerine. Colour and perfume may influence the viscosity.
If the results are acceptable you can optimize the formulation in terms of sensory feeling or adding 5% more IPA. -
Thank you for your valuable suggestion,will try and update
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@hrajan actually with TEA you will not able to reach more then 60% IPA, take a look for that. https://chemistscorner.com/cosmeticsciencetalk/uploads/editor/gn/0fbgsjljgbf9.png
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Thanks Fekher,really valuable info.
Yes,i have tried With TEA with variable trials. It was precipitated and settling down as precipitate.
Surely will try with other neutraliser.
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You are welcome @hrajan.
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Can i get the document TDS 255
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Formulating hand sanitizer gel with carbopol polymer
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Better to stick to AMP for neutralization at that alcohol volume, TEA for carbomer only works in formulas up to 60% alcohol.
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Thank you for your valuable info. It is very useful
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hrajan said:Thank you for your valuable info. It is very useful
Have you made any new trials?
Fekher said:@hrajan actually with TEA you will not able to reach more then 60% IPA, take a look for that. https://chemistscorner.com/cosmeticsciencetalk/uploads/editor/gn/0fbgsjljgbf9.pngI have managed to formulate 70% IPA with carbomer/TEA. Same for ethanol.
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em88 said:
I have managed to formulate 70% IPA with carbomer/TEA. Same for ethanol.How did you manage that? Did you neutralize first then add the IPA / ethanol?
I could not go past 60% as well.
Thanks.
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I wrote the steps above. We registered a product with 70% m/m ethanol already.
Maybe you are looking for high viscosity gels? For me 6000-10000 cP is enough for a hand sanitizer. -
@em88 may the purity of your IPA and Ethanol are fake that’s why you could do it ?
I also try it below 70% IPA approximately 60% end with precipitation. If the purity of your product are right that leads to say Lubrizol data are fake? really I don’t think soo…
What do you think @Perry @Gunther @Pharma @lmosca @Chemist77 @Cafe33 @ngarayeva001
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