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Removing black color of sulphonic acid
Greetings, and thanks for visiting my thread.
I just bought 3 Drums (215L*3) of LABSA (Linear Alkybenzene sulfonic acid) from a new source, but i noticed that it came Darker than the one i used to use, im making a dish liquid soap with 20%-25% of neutralizerd labsa and 5%SLES, but i end with a complety black Soap, not even Bronw but black.I tryed to reomve the color ussing hydrogen peroxide, some volatile compounds, but only Chlorine (3%) is working, the problem is that i cant take out the smell of chlorine.The questions are:‘1) There is another compound avaible to remove or change the color?2) If not, there is a way to remove the smell of Clhorine?Thanks, Btw i cant returnt the Drums. -
3 Replies
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your raw material is clearly contaminated, or otherwise unfit for use; if you really can’t return it, you’re best off disposing of it
and although I don’t know the position the FDA or your local regulatory body takes on chlorine, it is definitely forbidden in European cosmetics, so it’s likely your treated batch is not legally marketable, and will need to be disposed of too -
It may not be all that cost effective, but it is frequently possible (at least on a lab scale) to remove color from an ingredient by mixing it with activated carbon, heating gently, and then filtering out the carbon.
Whether or not this also gets rid of the contamination Bill refers to will be hard to determine. -
Thanks for your answer.
Im not willing to use it for cosmetics, im using it ringht now as degreaser for industries, but i want to use it to make dish soaps.The chlorine erase the color or contamination, im getting a orange-bronw color and its ok, and it seams that the smeel is gone too.
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