Pearliser seperated in our liquid soap prod. with time. Why??????

Formulating

Pearliser seperated in our liquid soap prod. with time. Why??????

Posted by nmalti on October 2, 2022 at 9:30 am

Hi,

So we have a small liquid soap production.

We added a pearliser (EUPERLAN® PK 771) from BASF at the end of the formulation, mixed about 30 min (450 liters). Cold process

The liquid soap looked great in its packaging at the beginning, but after 1 to 2 months the pearliser sets at the bottom of the bottle. Once you mix it looks okay but it happens again.

This production was done during the summer and where we’re at, we’re exposed to a lot of heat.

Is it normal for the the pearliser to seperate? is it because of the heat? Am I suppose to introduce the pearliser earlier on the formulation or mix for a longer time.

we don’t have access to different pearlisers here so it’s my only option.

Also, the colors that were used for the soaps were used at low doses to create pastel colors and some soaps changed colors. Once again, not sure if the colors are low quality, due to the heat, or am I to add another chemical to stabilise the color.

Any help would be greatly appreciated!

Thanks!

GeorgeBenson replied 2 years, 1 month ago 9 Members · 10 Replies
10 Replies

Paprik

Member
October 2, 2022 at 5:30 pm

Hello,

I’m sorry to hear that. You would need to supply your whole formula, so we can take a look and see what could possibly went wrong.
(Stabiliser, chelating agent, preservative etc … )
Abdullah

Member
October 3, 2022 at 1:15 am

Yes writing your formula will help.

Also can you share a photo that how it has separated?

And what is the pH and viscosity?
nmalti

Member
October 3, 2022 at 7:08 am

FORMULA

SLES 10%
cocamidopropyl betaine 5%
coco glucoside 3%
Cocamide DEA 2%
peg 7 2%
NACL 2%
fragrance .5%
glycerine .5%
sodium benzoate .3%
EDTA .2%
citric acid .085%
euperalan 1%
color

the p.h is around 6.5

VISCOSITY was very low during production. I reduced coco glucoside to 2%, removed peg 7 and glycerin during the latest testing and viscosity was a lot better.

Thanks!
ketchito

Member
October 3, 2022 at 11:53 am

@nmalti You need a good viscosity to suspend your pearlizer, else, it’ll end up in the bottom. Alternatively, you could consider adding some suspending agent (like a carbomer).
Abdullah

Member
October 3, 2022 at 12:19 pm

ketchito said:

@nmalti You need a good viscosity to suspend your pearlizer, else, it’ll end up in the bottom. Alternatively, you could consider adding some suspending agent (like a carbomer).

Or xanthan gum
DRBOB@VERDIENT.BIZ

Member
October 3, 2022 at 3:57 pm

minimum viscosity for suspension is 5000 cps
mohamed50

Member
October 4, 2022 at 11:41 am

اكتب تعليقكThe percentage of perfume is large, it is preferable to use perfume at a rate not exceeding 0.3% so as not to cause an imbalance in the viscosity, you can use xanthan gum as a thickener by 0.6%, and thus reduce the percentage of salt to 1% or less. Good luck
chemicalmatt

Member
October 7, 2022 at 8:30 pm

@nmalti, you are simply salting out that Euperlan PK. reduce or delete it and use a resin to thicken instead like the chemists here suggest.
ozgirl

Member
October 26, 2022 at 10:57 pm

You need to consider both the apparent density and viscosity when using the Euperlan pearlescents.

This might be of interest.

https://www.biobased.us/pdf/Euperlan_GB.pdf
GeorgeBenson

Member
October 28, 2022 at 8:15 pm

Do any of the replacers sell liquid pearlisers like Euperlan?