Thomas Kelly wrote:
> I agree with Keith that it is best to
> 1. Use the best quality chemicals and measure accurately.
> (This will always be important, but absolutely crucial when doing small,
> initial test batches.)
> 2. Do not attempt to use WVO (and titration) until you have succeeded
> in making quality BD using virgin oil.
>
> (That said) For isopropanol, I now use a product called "Iso Heet" (Red
> Container; 12 fluid ounces/355ml)). It is 95% isopropanol. I get the same
> titration as with 99% iso purchased through a chemical supply company. The
> difference is the price. I pay about $2 (US) per 355ml vs. $8 + shipping
> for 250ml from the chemical supply source. + In the US many chemical
> suppliers will no longer ship to private residences.
>
> Warning: Not all gas line anti-freeze is created equal.
> I had a problem with something called "Dri Gas". Although its label
> only listed isopropanol, the "isopropanol" itself titrated 6 or 7.
>
> Remember, start with small (1 L) test batches using virgin oil.
>
> Best Wishes for Your Success,
> Tom
>
> ----- Original Message -----
> From: "Keith Addison" <[EMAIL PROTECTED]>
> To: <biofuel@sustainablelists.org>
> Sent: Thursday, May 03, 2007 7:17 AM
> Subject: Re: [Biofuel] Titration question from a Newbie
>
>
>>> Good Day to all,
>>>
>>> I have a question about the purity of Isopropyl alcohol. Will 90% yield
>>> good
>>> results or does it have to be 99%??
>> "Isopropanol for titration is available from chemicals suppliers.
>> Some people have used the other kind of Dri-Gas, which is
>> isopropanol, but they found that it's unreliable. Best get 99% pure
>> isopropanol from a chemicals supplier. 70% pure isopropanol is also
>> said to work, but we found it didn't give satisfactory results."
>> -- Make your own biodiesel > The process > Chemicals needed > Chemicals
>> for WVO
>> http://journeytoforever.org/biodiesel_make.html
>>
>> See also:
>>
>> What should you do if your fuel doesn't pass the wash-test?
>> http://journeytoforever.org/biodiesel_vehicle.html#whatdo
>>
>> Accurate measurements
>> http://journeytoforever.org/biodiesel_make2.html#measure
>> "When "newbies" have problems making their first test batches and it
>> doesn't pass the quality tests it's most often because of inaccurate
>> measurements, or they didn't follow the instructions closely enough."
>>
>> Avoid variables.
>>
>> Have your test batches with new oil passed the quality tests yet?
>>
>> Best
>>
>> Keith
Sorry to come in on this late, but a place I found recently that
supplies isopropyl alcohol is electronics supply places. It's used to
clean down PCB's and other electronics stuff. It's even the stuff that's
used in CD cleaning kits.
Now all of this rests upon me getting my alcohols right, so search, at
the top of the page, for "isopropyl" at this site, www.rsaustralia.com.
This gives a range of container sizes. There is also an MSDS at:
http://docs-asia.electrocomponents.com/webdocs/0065/0900766b80065e94.pdf
Have I found the right stuff? Assuming I've got the right stuff, it's a
lot easier to get 99.7% IPA from an electronics place than a chemical
supply place. Electronics places are probably a lot more common as well.
Regards,
Andrew
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