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ALS based cleanser/ Aqua SF1 question
Hi, I am trying to solve an aeration issue with an existing ALS based cleanser - production batches end up being super aerated, even with slow mixing. I know replacing the aqua sf 1 might be a way to go - but what should I replace with? Do I NEED a replacement or can I just thicken with salt and call it a day? Any other options?
52.8% water
Tetrasodium EDTA 0.1%
7.8% Aqua sf 1
27% ALS
8% CAB 35
0.5% Euperlan PK 300
0.5% Euxyl K 300
3.15% Salt -
6 Replies
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That’s a lot of salt already. Perhaps too much. With that surfactant blend you shouldn’t need a polymer thickener. Do a salt curve analysis. Personally I hate SF1, only of use if you have an expensive vacuum mixer.
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Thank you @belassi , We dont have a vacuum mixer..
so ill stay away from the sf 1. I made a batch without any aqua sf -1 this morning, the system only took about 1.2% salt and it did thicken the system but it wasnt quite the same as with aqua sf 1. It was not “gel-ly” enough.. and since this is an existing product, I want to try to be as close to the current product as possible. -
7.8%?. That’s a lot, I never use over 1%. And you have a ph restriction.
You could use CMC, or HMC instead, it is more aproppiate for that use, but in the end you will have the same issue.
If you want a gelly product I suggest more surfactants and more salt. Perhaps 35% ALS and 1,5% salt. You could play with the % till you get the consistence you want.If you can’t you could do the batch, let it defoam overnight, and then add a prehidrated thickener and mix as shortly as you can.
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Thank you @DAS Okay ill give the cellulose a shot and also try increasing the surfactant. Will let you know.
Do you think reducing the aqua to 1% might help the bubbles? Or will that not be enough to get rid of the aeration? -
It might, but that’s physics, so even if you reduce the gel and lower the viscosity a little bit you still have tiny air bubbles trapped. If there is air, agitation and high viscosity there is nothing you can do.
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You can add the SF 1 at the end sub surface.The viscosity will be low and if you use low stir/shear a minimal amount of air will be introduced.
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