[Milsurplus] rust remover

[AI4WM Bill]

I use Evap O Rust on many things.  All depends on what you are derusting.  I would not Evap O Rust radio components, but I would a cover or chassis where I could protect components.
 
73,
Bill
AI4WM


________________________________
 From: Mike Durff <mike at oldaudio.net>
To: "Milsurplus at mailman.qth.net" <Milsurplus at mailman.qth.net> 
Sent: Saturday, August 17, 2013 7:55 PM
Subject: Re: [Milsurplus] rust remover
 

Hutch:
How bad is it and where is it? I have found over the years it's better to join it than fight it. Gemplers.com carries a product called "Rust converter". It comes in pint, quart & spray. Depending on how bad & where the rust is you simply apply the rust converter and it actually converts it to a black primer which can then be painted. It is not a harsh chemical like "Naval Jelly" & other rust removers. Your local Auto Zone  auto parts dealer probably carries small quantities in the auto paint dept.
TNX, MD


PS:  "Rust Converters are chemical solutions or primers that can be applied directly to an iron or iron alloy surface to convert iron oxides (rust) into a protective chemical barrier. These compounds interact with iron oxides, especially iron(III) oxide, converting them into an adherent black layer that is more resistant to moisture and protects the surface from further corrosion. They are sometimes referred to as "rust remover" or "rust killer".
Commercial rust converters are water-based and contain two primary active ingredients: Tannic acid [1] and an organic polymer. Tannic acid chemically converts the reddish iron oxides into bluish-black ferric tannate, a more stable material.[2] The second active ingredient is an organic solvent such as 2-Butoxyethanol (ethylene glycol monobutyl ether, trade name butyl cellosolve) that acts as a wetting agent and provides a protective primer layer in conjunction with an organic polymer emulsion[citation needed]. Some rust converters may contain additional acids to speed up the chemical reaction by lowering the pH of the solution. A common example is phosphoric acid, which additionally converts some iron oxide into an inert layer of ferric phosphate.[3] " .. It may also be used to restore and preserve iron-based items of historical importance.[4]"
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