[ARC5] Contact cleaner query

[Bruce Long]

The active ingredient for the original De-oxit seems to be oleic which IIRC has the property of converting tarnished silver plating- silver oxide- back into metallic silver
Oleic acid also seems to have have long history of being used to convert/remove other metallic tarnish.  For example it has been used for over 100 years to de-tarnish brass clockwork.
There are levers very informative discussions about this at the Antique radio form including comments of making a De-Oxit substitute with oleic acid and a suitable oil based solvent.
Oleic acid is availab on Ebay in small amounts at very reasonable price.



      From: DSP3 <jeepp at comcast.net>
 To: arc5 at mailman.qth.net 
 Sent: Tuesday, December 15, 2015 2:37 PM
 Subject: [ARC5] Contact cleaner query
   

This post is crossed with others, but.......

Gentlemen,

I use De-Oxit D5 as my standard contact cleaner.  Its getting rather 
expensive, of late, and I looked around for a suitable substitute.  
Also, I wonder if De-Oxit is part of the audiophile and curator/purist's 
conspiracy for pricing?  Not being either a chemist or metallurgist, and 
only a smattering of corrosion control engineering, I ask anyone here if 
the over-the-counter industrial contact and switch cleaner Ideal #40-610 
product might be an acceptable substitute product?  I got two BIG spray 
cans w/ nozzle (like De-Oxit) from an electrical supply house for $7 
each.  Lowe's has it, too.  Most older MIL gear doesn't have exotic 
plastics, etc. so maybe OK for older stuff, at least?

Alphatic hydrocarbon-based solvent.

Contains alphatic petroleum solvent 64742-89-7, isopropol alchohol 
67-63-0 1,1 diflouroethane propellant 75-37-6.

certified for circuit breakers, electronic relays, switches, terminals, 
sensors, printed circuit boards, motor controls.

Hmmmm,  De-Oxit D5 has same alphatic hydrocarbon but spec # is 
8052-41-3, also exact same diflouroethane propellant.

Looks like the difference is the presence of isoprop alcohol in the 
Ideal product.

Jeep - K3HVG

______________________________________________________________
ARC5 mailing list
Home: http://mailman.qth.net/mailman/listinfo/arc5
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:ARC5 at mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html