Phil Quixote

Yes, right windmill. I'm sure that there is discussion of this in the 
earlier Solvents Assessment Reports (in the 1990s) of the Technical and 
Economic Assessment Panel of the Ozone Secreatriat. I tried to find it 
at 
http://www.unep.ch/ozone/Assessment_Panels/TEAP/Reports/TEAP_Reports/index.shtml 
but come up with couldn't be found. Try asking them for a hard copy of 
the 1998 TEAP Assessment Report: it may mention it. Searching through my 
archives I find the following on p 2-18 of the 1998 UNEP STOC Assessment 
Report:
"Amongst the flammable solvents, the one that is most frequently quoted 
for electronics defluxing is isopropanol. Unfortunately, this solvent, 
although it will dissolve rosin residues reasonably easily, has very 
limited solubility for most of the other by-products resulting from the 
soldering process unless it is extremely pure. Continual purification 
can be achieved by high-volume distillation in an approptriate machine, 
but this is very energy-intensive and expensive. It is not recommended 
to use this product by itself..."

Does this help?

Brian

Phil Nutting wrote:
> Good morning,
> 
> Over the recent years there have been discussions about the ionic
> residue left behind by alcohol when used as a cleaning agent.  You have
> me convinced.  Now I have to convince my organization.  Is there some
> document, standard or other item which I can use as a reference.  Simply
> stating that "the experts on TechNet said so" won't carry enough weight.
> Not would using alcohol for cleaning would be a change and we all know
> change = death.  Just because something has been done one way for 20+
> years does not make it right.  Hopefully I chose the right windmill to
> tilt at.
> 
> Phil
> 
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