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Thread: Isopropanol on soap

  1. #1 Isopropanol on soap 
    Forum Sophomore
    Join Date
    Jan 2014
    A friend is beginning to make soap. She reports that she has some sodium carbonate forming on the surface. I guess this might be a mixture of carbonates. In any case, she is advised that rubbing the soap with isopropanol will suppress this effect. Can anyone suggest why this might work?

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  3. #2  
    Forum Ph.D.
    Join Date
    Jan 2009
    if she is using Na0H to make the soap and there is an excess unreacted it would form the carbonate from C02 in the atmosphere, don't really see how isopropanol will help. check the PH of the soap.

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