Homebrew PCBs

>From: Stefan Trethan <stefan_trethan@...>
>Reply-To: Homebrew_PCBs@yahoogroups.com
>To: Homebrew_PCBs@yahoogroups.com
>Subject: Re: [Homebrew_PCBs] ipa, ethyl alcohol
>Date: Sat, 17 May 2003 14:02:38 +0200
>
>hi
>
>i read some information about ipa.
>i have read of it often for cleaning/solvent etc.
>i only saw a bottle of it once (with a terrible misspelled label on it).
>this was a strange brass bottle which had some kind of pressure tight valve 
>which to pull back and then
>the ipa flows out.. so i assumed this may evaporate very fast. is this 
>right?

Yes, it's quite volatile.


>
>i never saw it sold in any shop but found it as isopropanol which is only 
>another name (is this
>correct?) in the list of a local chemical supplies shop.

Same stuff. Propanol is the modern name for propyl alcohol (like ethanol is 
ethyl alcohol).


>
>i also read it is used a cheap substitute for ethyl alcohol.
>
>but if it is only a substitute for ethyl alcohol i would rather use that.
>it is sold as "spiritus" here, which is ethyl alcohol (somewhere betewwn 96 
>and 98%).
>it is made undrinkable by some chemicals and so rather cheap because the 
>taxes for alcoholic drinks
>don't apply.
>
>does anyone know what the differences (in using) of the both alcohols are 
>and if ethyl alcohol ay also
>be good for cleaning the old ink out of the cardridge?

I think the main difference is that IPA evaporates quicker. It's a better 
solvent and it seems to be used a lot more in industry than ethanol. IPA is 
good stuff for removing flux after soldering.

Leon
--
Leon Heller, G1HSM Tel: +44 1424 423947
Email:leon_heller@...
My web page: http://www.geocities.com/leon_heller

_________________________________________________________________
Surf together with new Shared Browsing 
http://join.msn.com/?page=features/browse&pgmarket=en-gb&XAPID=74&DI=1059