Hi, Doug (and list),

Just a few miscellaneous thoughts:

(1) Ronsonol lighter fluid is pure naphtha but Ronson has been bought 
out by Zippo and I don't think that Zippo lighter fluid is the same--I'm 
not certain. When I found that out, I bought several containers of 
Ronson lighter fluid.

(2) Naphtha itself is made of other chemicals that are available. For 
those who wish to wade through it, there is an article that seems to 
cover the wide range of the use of the term Naphtha. 
http://en.wikipedia.org/wiki/Naphtha
The most interesting item there is a link to the Shell-manufactured 
Ronsonol MSDS
http://secure.cooperbooth.com/datasheets/160606.pdf
The CAS number for the 95% component is 64742-89-8 which is listed on 
page 485 of the "Handbook of Green Chemicals"
http://books.google.ca/books?id=pKrBNbkE2c0C&dq=64742-89-8&source=gbs_navlinks_s
shows that the same CAS number is applied to both Naphtha, light 
alphatic AND Heptane (C7).

I did not research 64742-88-7 which is 5% but it appears to be a heavier 
chemical, referred to as medium alpha.

(3) Hexane (C6) is an often-recommended solvent and one that is 
suggested for cleaning pinch rollers by one of the major Nakamichi 
repair shops (the one in Connecticut). I don't know the difference 
between C6 and C7 (these numbers should all be subscripts, but HTML is 
not generally recommended for mailing lists)

(4) One interesting chemical is Jojoba Oil and it's often available at 
Trader Joe's. It is considered one of the closest replacements for Sperm 
Whale Oil and was considered at one point for magnetic tape lubrication. 
(I have had better luck with D5 than Jojoba for re-lubrication), but it 
might be a substitute for nose grease--it should be investigated.

Enjoy!

Cheers,

Richard


On 2013-04-12 10:30 AM, Doug Pomeroy wrote:
> I have never experimented with various cleaning
> fluids to remove grease pencil from shellac and
> lacquer discs.  Any suggestions?
>
>
> Doug Pomeroy
> Audio Restoration and Mastering Services
> 193 Baltic St (Clinton/Henry)
> Brooklyn, NY  11201-6173
> (718) 855-2650
> [log in to unmask]
>

-- 
Richard L. Hess                   email: [log in to unmask]
Aurora, Ontario, Canada                             647 479 2800
http://www.richardhess.com/tape/contact.htm
Quality tape transfers -- even from hard-to-play tapes.