• Formulating

  SDS and its precipitation in cold temperature

  Posted by Anonymous on February 4, 2014 at 2:26 am

  Hello,

  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%
  Indicator 0.01%
  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?

  Anonymous replied 10 years, 2 months ago 0 Member · 0 Replies
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