[SEL] De-rust chemical? Your thoughts.....

[John Culp]

There's some no-phosphoric-acid Naval Jelly and copies out there. I  
forget exactly what's in 'em, but an MSDS hunt would turn it up. What I  
do know is that the stuff doesn't work nearly as well as the phosphoric  
acid kind. In recent years, I couldn't get any sort of cleaning  
compound containing phosphates here, due to U.S. environmental  
regulations aimed at protecting the Tennessee River system from  
eutrophication. Thus I ended up with some of this crud. Now, for some  
reason, the phosphate kind's available again, so I dumped the  
non-phosphate stuff and got the real thing.

Also, there's the interesting "Phosphate Free TSP," which is sodium  
metasilicate. A.K.A. water glass. Comes in a crystalline powder, and  
it's very strongly basic, so be careful with it. Not for derusting, but  
it's good for the usual uses of TSP like cleaning concrete and brick,  
removing nasty greasy crud, will precipitate hard water minerals out of  
cooling water before they cause that hard scale on the inner cooling  
system surfaces (it settles as a white clay-like substance), and will  
kill poison ivy if you spray it straight on it. :-)

John

On Aug 13, 2006, at 7:43 PM, Bill Dickerson wrote:

>
> Is it any good?
> What's it cost?
> How does it work really?
> Anyone here use it?
>
> http://www.orisonmarketing.com/corrosion/evaporust/evapo-rust.html
>
> http://www.evapo-rust.com/index.php? 
> option=com_content&task=category&sec
> tionid=4&id=21&Itemid=26
>
> I've seen it at swap meets, etc............... But wonder - how can it  
> be
> "patented" if it's a simple chemical reaction?
> No acid?
> Totally safe?


John Culp
Bristol, Tennessee, USA