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Subject: Re: [Homebrew_PCBs] Heatless (cold) Toner Transfer for PCB making

From: Roger Blair <Roger.Blair@...>
Date: 2016-01-06

Yes,
Expensive enough to do a needs/cost/benefit reality check! My point was that greater than 99% purity was available... As a hobbyist, I would start with hardware-store grade materials and test my way up the cost ladder to a reasonable result for the application.
Roger

On 1/5/2016 8:01 PM, Jean-Paul Louis louijp@... [Homebrew_PCBs] wrote:
 

WOW, that’s really expensive! $144.10 per liter + hazardous material fee + shipping.

Jean-Paul
N1JPL

> On Jan 5, 2016, at 9:18 PM, Roger Blair Roger.Blair@... [Homebrew_PCBs] <Homebrew_PCBs@yahoogroups.com> wrote:
>
> FYI...
> http://www.sciencelab.com/page/S/PVAR/SLE2248
>
> General Chemical Specifications: Assay (C2H5OH; by Volume) Min. 99.5% Water (H2O)0.2%
> Roger Blair
>
> On 1/5/2016 5:43 PM, Jean-Paul Louis louijp@... [Homebrew_PCBs] wrote:
>>
>> Pure Ethyl Alcohol (Ethanol) will be the hardest to find in the US. All the pharmacies in the US now carry IPA (Iso Propyl Alcohol) which is not Ethanol. 96% purity limit for current ethanol is not by accident. It is the maximum purity that you can obtain by distillation. In order to get 99%, you need to use a different process that will go beyond the 96% limit. I do not know the english name of the process.
>> When I was in France, 99% Ethanol was available at any pharmacy and was called “Alcool rectifié” which translate approximately by rectified alcohol.
>>
>> My $0.02,
>> Jean-Paul
>> N1JPL / ex-AC9GH
>>
>> > On Jan 5, 2016, at 7:02 PM, alienrelics@... [Homebrew_PCBs] <Homebrew_PCBs@yahoogroups.com> wrote:
>> >
>> > It says Ethyl Alcohol, which is often denatured. Not everyone uses the same denaturing agents.
>> >
>> >
>> > However, in one of the comments he says:
>> > "The one I use is Ethyl alcohol (pure 96%) also called Ethanol. It's the one used as antiseptic."
>> >
>> > Medical Ethyl alcohol seems to be about 95% or so.
>> >
>> > Hardware store denatured alcohol seems to be about 90%.
>> > https://en.wikipedia.org/wiki/Denatured_alcohol
>> >
>> > Some people in the comments mentioned Everclear. It seems to be sold in 75.5% (151 proof) and 95% (190 proof).
>> >
>> > Steve Greenfield AE7HD
>> >
>> >
>>
>>
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