Guys;
The titration solution is water anyways so what difference is 10% water
gonna make in the IPA? The water is always a problem cuz it makes the
oil want to drop out and unless you've got good agitation I wonder how
accurate the titration really is. I've been wondering what about using
a 0.1% w/v solution of KOH in IPA as a titration solution instead. In
this case anhydrous IPA would make sense. Thoughts?
Joe
Thomas Kelly wrote:
Mike Weaver wrote:
Look for 99% anhydrous iso
Where?
Look for 99% anhydrous iso
Thomas Kelly wrote:
Andrew,
I thought that "rubbing alcohol" (isopropyl) sold at pharmacies
was 70%.
I just noticed that a container of isopropyl alcohol in our bathroom
cabinet was 91%. It was purchased at a local pharmacy; 1 quart (950ml)
for $2.49 (USD).
Ken P. commented that purity wasn't critical. I'm not so sure
about 70%, but 90+% might be OK. You can't beat the price.
Tom
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