Re: [Biofuel] Isopropyl Alcohol supplies - Used to be Titrationquestion from a Newbie
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 - Original Message - From: Zeke Yewdall To: biofuel@sustainablelists.org Sent: Tuesday, May 15, 2007 12:45 PM Subject: Re: [Biofuel] Isopropyl Alcohol supplies - Used to be Titrationquestion from a Newbie It seems that hydroponics stores carry very pure isopropyl alcohol as well. I seem to remember a price of about $40 for one US gallon for the 99.5% stuff, which is similar to the price you found though. Z On 5/14/07, Thomas Kelly [EMAIL PROTECTED] wrote: Andrew, 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. Isopropanol is what you want for titrating WVO; Isopropanol = Isopropyl Alcohol. Although 99.7% is very good purity, $16.90 (AUD?) for 500 ml quoted at www.rsaustralia.com is a bit expensive. If you have had success with small test batches using virgin oil and are ready to move on to WVO (and titration) it is probably worth it to get the best quality isopropanol you can find and afford. While you are using the expensive Isopropanol keep a heads up for a cheaper source. As I said, I use a gas line antifreeze called Iso-Heet. It is available at auto supply stores here in the US for about $2 (USD) for 335ml. Other gas antifreeze/de-watering products may also be isopropanol. Best of Luck to You, Tom ___ Biofuel mailing list Biofuel@sustainablelists.org http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): http://www.mail-archive.com/biofuel@sustainablelists.org/ ___ Biofuel mailing list Biofuel@sustainablelists.org http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): http://www.mail-archive.com/biofuel@sustainablelists.org/ -- ___ Biofuel mailing list Biofuel@sustainablelists.org http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): http://www.mail-archive.com/biofuel@sustainablelists.org/ ___ Biofuel mailing list Biofuel@sustainablelists.org http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): http://www.mail-archive.com/biofuel@sustainablelists.org/
Re: [Biofuel] Isopropyl Alcohol supplies - Used to be Titrationquestion from a Newbie
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 - Original Message - *From:* Zeke Yewdall mailto:[EMAIL PROTECTED] *To:* biofuel@sustainablelists.org mailto:biofuel@sustainablelists.org *Sent:* Tuesday, May 15, 2007 12:45 PM *Subject:* Re: [Biofuel] Isopropyl Alcohol supplies - Used to be Titrationquestion from a Newbie It seems that hydroponics stores carry very pure isopropyl alcohol as well. I seem to remember a price of about $40 for one US gallon for the 99.5% stuff, which is similar to the price you found though. Z On 5/14/07, *Thomas Kelly* [EMAIL PROTECTED] mailto:[EMAIL PROTECTED] wrote: Andrew, 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 http://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 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. Isopropanol is what you want for titrating WVO; Isopropanol = Isopropyl Alcohol. Although 99.7% is very good purity, $16.90 (AUD?) for 500 ml quoted at www.rsaustralia.com http://www.rsaustralia.com is a bit expensive. If you have had success with small test batches using virgin oil and are ready to move on to WVO (and titration) it is probably worth it to get the best quality isopropanol you can find and afford. While you are using the expensive Isopropanol keep a heads up for a cheaper source. As I said, I use a gas line antifreeze called Iso-Heet. It is available at auto supply stores here in the US for about $2 (USD) for 335ml. Other gas antifreeze/de-watering products may also be isopropanol. Best of Luck to You, Tom ___ Biofuel mailing list Biofuel@sustainablelists.org mailto:Biofuel@sustainablelists.org http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): http://www.mail-archive.com/biofuel@sustainablelists.org/ ___ Biofuel mailing list Biofuel@sustainablelists.org mailto:Biofuel@sustainablelists.org http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): http://www.mail-archive.com/biofuel@sustainablelists.org/ ___ Biofuel mailing list Biofuel@sustainablelists.org http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): http://www.mail-archive.com/biofuel@sustainablelists.org/ ___ Biofuel mailing list Biofuel@sustainablelists.org http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org Biofuel
Re: [Biofuel] Isopropyl Alcohol supplies - Used to be Titrationquestion from a Newbie
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 ___ Biofuel mailing list Biofuel@sustainablelists.org http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): http://www.mail-archive.com/biofuel@sustainablelists.org/
Re: [Biofuel] Isopropyl Alcohol supplies - Used to be Titrationquestion from a Newbie
I found it at a well-stocked independant pharmacy 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 ___ Biofuel mailing list Biofuel@sustainablelists.org http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): http://www.mail-archive.com/biofuel@sustainablelists.org/ ___ Biofuel mailing list Biofuel@sustainablelists.org http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): http://www.mail-archive.com/biofuel@sustainablelists.org/
Re: [Biofuel] Isopropyl Alcohol supplies - Used to be Titrationquestion from a Newbie
Thanks Mike My town has one of the last independent pharmacies in the area. The owner is a neighbor. He could probably order it for me. Tom - Original Message - From: Mike Weaver [EMAIL PROTECTED] To: biofuel@sustainablelists.org Sent: Tuesday, May 15, 2007 5:28 PM Subject: Re: [Biofuel] Isopropyl Alcohol supplies - Used to be Titrationquestion from a Newbie I found it at a well-stocked independant pharmacy 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 ___ Biofuel mailing list Biofuel@sustainablelists.org http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): http://www.mail-archive.com/biofuel@sustainablelists.org/ ___ Biofuel mailing list Biofuel@sustainablelists.org http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): http://www.mail-archive.com/biofuel@sustainablelists.org/ ___ Biofuel mailing list Biofuel@sustainablelists.org http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): http://www.mail-archive.com/biofuel@sustainablelists.org/
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 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 ___ Biofuel mailing list Biofuel@sustainablelists.org http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): http://www.mail-archive.com/biofuel@sustainablelists.org/ ___ Biofuel mailing list Biofuel@sustainablelists.org http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): http://www.mail-archive.com/biofuel@sustainablelists.org/
Re: [Biofuel] Isopropyl Alcohol supplies - Used to be Titrationquestion from a Newbie
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? Oh 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 ___ Biofuel mailing list Biofuel@sustainablelists.org http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): http://www.mail-archive.com/biofuel@sustainablelists.org/
