I found this and then LOST it and now found it again. Otherwise it's NOT listed in the MSDS and called "proprietary."
Anticorrosive paint
So a patent on a PAINT with the same ingredient.
It's considered 10 times less powerful than phosphoric acid but at the same time it's not corrosive except ONLY to rust (iron oxide - converting to ferric phosphate). https://www.armorvci.com/wp-content/uploads/METAL-RESCUE-Product-Data-Sheet.pdf
so I put a bunch on the car - about half the jar. It goes fast - so is expensive but you don't have to worry about eating the concrete or your hands or skin. My hands got eaten up badly from the phosphoric acid. haha. Also my face a bit.
But this stuff stops working once dried out - and so - not sure how it will work.
It's ten times less as strong.
So more like Tannic Acid - essentially the same thing.
Metal Rescue Rust Remover GEL: Formulated to cling to metal, this citric-acid gel is ideal for removing spot rust in a hard-to-reach area, on vertical surfaces, or on an item that cannot be soaked. It contains no harmful or corrosive acids.
OH so looks like they changed their formula...
There are a variety of weak acids that will react with rust and remove it, and each one works a bit differently. Tannic acid, oxalic acid, citric acid, and Ethylenediaminetetraacetic acid (EDTA), can all be used as an industrial rust remover.
Hmmm
https://blasterproducts.com/product/metal-rescue-rust-remover-gel/
I think I got the PREVIOUS owner - so hopefully it's the Phosphonate Salt product and not the citric acid.
But it smells like citric acid I think.... although Phosphoric acid also has that tangy smell to be sure.
Nope I got the NEW "Blaster" formula. dang.
What's the strength difference? wow between 3 and 6 pH - quite weak indeed.
Yes it can react but may not dissolve a lot of the Fe2O3
The reaction is as follows :
C6H8O7 + Fe2O3 → 2 FeO + 6 CO + 2 H2O + 2 H2
in this case you’ll see bubbles formed.
But it is possible that there is no bubble forming, then iron citrate is formed :
Fe2O3 + C6H8O7 = Fe2C6H2O7 + 3H2O
A 10% C6H8O7 is normally used ( optimal) and if possible heat the solution .
It is not a blitz reaction give it time.
E.g. : It is industrial even used in beating rust in water pipes in nuclear reactors:
meanwhile back to phosphonate salt: Anti-corrosion compound for the preventive and curative treatment of metal reinforcement enclosed in mortar and concrete
The subject of the present invention is a basic anti-corrosion combination characterized by the combination of an anti-rust agent, known or not, with: a polyfunctional complexing agent, phosphonic derivative in the form of an amine salt, which exacerbates them anti-rust properties, and, - a bi-polar solvent that facilitates the spreading, and improves the anti-rust protection.This basic anti-corrosion combination is used either: ▪ To obtain an anti-corrosion composition for preventive treatments in which case an additive, deflocculant, plasticizer, fluidifier, rheology agent in the form of an amine salt is added to the anti-corrosion base. To obtain an anti-corrosion composition for curative treatments, in which case it is added to the anti-corrosion base an additive consisting of wetting, diffusing, polar solvent facilitating the penetration, diffusion and tracking of the anti-corrosion combination through the micro channels of the materials.
Hint: one reason citric acid works pretty well is because the salt it forms is more soluble than something like iron phosphate, so it leaves the surface allowing further attack.
OK I get it now.
https://www.armorvci.com/news/industrial-rust-removal-acids-and-water-based-solutions-explained/
“This partnership came together at the same time that our lab completed its year-long work to speed up the time it takes Metal Rescue to remove rust, which means the Metal Rescue formulation is now 2X faster than the previous version!” said Yancho.wow - we'll see what happens
No comments:
Post a Comment