Hi Guys, yes it's true I am an industrial chemist, I recall having a conversation with Paul (Penny) about corrosion prevention etc. and wondering what was in Salt X etc.
To be honest, it was a couple of years ago and I don't recall in which context we discussed the use of vinegar, although obviously it is an (organic) acid (acetic). There were a couple of processes under discussion, 1) Salt removal or prevention of sticking and 2) corrosion removal / prevention.
Not sure on the salt dissolving issue yet, the good Dr is quite right in that salt NaCl is inert (unreactive) and literally the salt of a metal in this case with a halide (Chlorine) so think of sodium metal dissolved in HCl (Hydrochloric or muriatic acid) you would get (put simply) Sodium Chloride (salt) and hydrogen evolved.
I tend to use solutions of phosphoric acid for cleaning corroded steel parts, as this leaves a basic phosphate coating, preventing flash rust and giving a good key for paint.
Aluminium is different altogether, steer clear of strong caustic (Sodium or Potassium Hydroxide) based cleaners, they will dissolve aluminium. Metasilicate based ones are good and acids such as sulphuric and phosphoric combined with a 'nasty' Hydrofluoric acid work well, most acidic wheel cleaners are like this. Wetter and surfactants are key in improving these processes, particularly for soil and corrosion debris removal.
I'll keep looking into the Salt X / Salt away thing, but to me they seem a bit odd, can't work it out yet.
Last edited by Dreamliner 200
on Wed Aug 15, 2012 12:15 pm, edited 1 time in total.
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