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Author Topic: Soap and Glycerol?  (Read 2021 times)

Offline Tony

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Soap and Glycerol?
« on: December 23, 2010, 04:50:50 PM »
Just got thinking - this might be a stupid question, but what is the difference between the Glycerol we drop at the end of a batch, and the "soap" that drops out of suspension from the biodiesel after settling for a week?
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Offline Julian

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Re: Soap and Glycerol?
« Reply #1 on: December 23, 2010, 07:08:49 PM »
I think I can say without contradiction ... colour.

And possibly some numbers and letters ...

Glycerol  C3H5(OH)3

Soap  C18H36O2Na

Everything but the colour bit goes stright over my head!
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