Joe,
As you say:
>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 ......
IPA ???? India Pale Ale?
Oooooh IsoPropylAlcohol
When a WVO titrates at 2ml of 0.1% lye, you have just added 2ml of water.
You have increased the water concentration by 15%.(?)
That is the very reason why I like to start with the driest isopropanol.
Ken P wrote that it is only the FFAs that have to dissolve in the IPA.
That was why he felt the IPA purity wasn't critical.
All things being equal (price/ease of obtaining) I go for anhydrous IPA.
This,
I think is good advice for newbies ..... the original post.
>I've been wondering what about using a 0.1% w/v solution of KOH in >IPA as a
>titration solution instead.
Very interesting. Why not?
I may have a Liter of IPA. I'm tempted to try it .... but I wonder why.
I've been making consistently good BD titrating w. aqueous KOH solution and
using 95% IPA that I get for a couple of dollars.
>In this case anhydrous IPA would make sense. Thoughts?
Actually, I think anhydrous IPA would be less important.
Tom
----- Original Message -----
From: Joe Street
To: biofuel@sustainablelists.org
Sent: Tuesday, May 15, 2007 5:02 PM
Subject: Re: [Biofuel] Isopropyl Alcohol supplies - Used to be
Titrationquestion from a Newbie
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
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