Yup, the same, but the purity may be different. A question of labelling. Brian Hernefjord Ingemar wrote: > 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 >> >> --------------------------------------------------- >> Technet Mail List provided as a service by IPC using LISTSERV 15.0 To >> unsubscribe, send a message to [log in to unmask] with following text in > >> the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt >> or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET > >> Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the >> posts: send e-mail to [log in to unmask]: SET Technet Digest Search the >> archives of previous posts at: http://listserv.ipc.org/archives Please > >> visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 >> for additional information, or contact Keach Sasamori at >> [log in to unmask] or 847-615-7100 ext.2815 >> ----------------------------------------------------- >> >> > > --------------------------------------------------- > Technet Mail List provided as a service by IPC using LISTSERV 15.0 To > unsubscribe, send a message to [log in to unmask] with following text in > the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or > (re-start) delivery of Technet send e-mail to [log in to unmask]: SET > Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the > posts: send e-mail to [log in to unmask]: SET Technet Digest Search the > archives of previous posts at: http://listserv.ipc.org/archives Please > visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for > additional information, or contact Keach Sasamori at [log in to unmask] or > 847-615-7100 ext.2815 > ----------------------------------------------------- > > --------------------------------------------------- > Technet Mail List provided as a service by IPC using LISTSERV 15.0 > To unsubscribe, send a message to [log in to unmask] with following text in > the BODY (NOT the subject field): SIGNOFF Technet > To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) > To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest > Search the archives of previous posts at: http://listserv.ipc.org/archives > Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 > ----------------------------------------------------- > > --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 -----------------------------------------------------