Sorry Bill, didn't mean to confuse. It's catalan. English speaking people
have so much latin basics, so I thought it was not too difficult to
understand. If I find a similar page in American, I'll send it to TN. But
Mike's and other's explanations on the IPA ought to say enough.
q.e.s.m. (that's Spanish however)
Inge

-----Ursprungligt meddelande-----
Från: TechNet [mailto:[log in to unmask]] För Bill Kunkle
Skickat: den 29 augusti 2007 19:41
Till: [log in to unmask]
Ämne: Re: [TN] The perils of using Alcohol for cleaning

What language is the web page in?
I tried Spanish on babelfish, but got a poor result.

Bill

-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Hernefjord Ingemar
Sent: Wednesday, August 29, 2007 5:27 AM
To: [log in to unmask]
Subject: Re: [TN] The perils of using Alcohol for cleaning


Hi,
is 2-propanol and isopropanol exactly same? We changed from 2-propanol
to isopropanol some years ago (not same articl number). Thought myself
for years, that these two were not equals.

E.g. http://www.canal-h.net/webs/sgonzalez002/Quimica/ALCOHOLS.htm

/Inge

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Brian Ellis
Sent: den 29 augusti 2007 10:54
To: [log in to unmask]
Subject: Re: [TN] The perils of using Alcohol for cleaning


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/ind
ex.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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