SDS and its precipitation in cold temperature
I believe, that this question is know-how of Perry, but I am waiting comments from all
So, I have one formulation, where I use:
SLS (or SDS) 3%
Sodium Hydroxide 0.1%
Aqua to 100%
This formulation is not a cosmetic. I heat all the ingredients together while mixing. pH of solution is 10.50. At 15-20 degrees of celcius, SDS precipitates.
I have tried to add Sodium Chloride solutions:
0.3 M concentration in 7 %, 40 %, 96.89 %;
0.5 M concentration in 96.89 %;
0.6 M concentration in 96.89 %;
0.8 M concentration is too big, solution became viscous.
In all prototypes SDS precipitated….
I need that my formulation would be homogenous.
Maybe You have some advices?
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