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[OM] Re: cleaning lens glass

Subject: [OM] Re: cleaning lens glass
From: "Paul Farrar" <farrar@xxxxxxxxxxxx>
Date: Fri, 7 May 2004 12:39:34 -0500 (CDT)
> > >A slight point of clarification.  I've heard many people refer 
> > >to Ronsonol 
> > >as pure naptha, it isn't, at least not in Canada.  The label 
> > >on my bottle of Ronsonol clearly states that it also contains 
> > >heptane, a very strong solvent (organic?).  Heptane on its own 
> > >works very well as a solvent and degraser, but it is difficult 
> > >to purchase at the consumer level.  I wonder how much of the 
> > >usefulness of Ronsonol can be attributed to heptane rather than naptha.
> > >                           -mark
> > >
> > 
> > Mark;
> > Just looked at my bottle (I use it at work as well, for de gunking stuff)
> > and it makes no mention of Heptane.  Just Naphtha.  They must hop it up for
> > the Canadian market.  Makes me think I may stock up on my next trip across
> > the boarder.

Naphtha isn't a chemical compound, while heptane is. Naphtha is just
a name for an unspecified mix of light petroleum distillates. It could
contain all sorts of compounds, including heptane. Technically, gasoline
is a naphtha.

Paul

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