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  #1  
Old 26th February 2020, 04:57 PM
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Originally Posted by MikkiJayne View Post
Available on Amazon here, it comes in various sizes but the only one which makes financial sense is the gallon. Pour it in to a plastic container and let it do its thing. It doesn't affect paint, rubber, plastics or aluminium.
Watched a few YouTube videos about this stuff, and seems very impressive, so ordered some. Anyone wanting to save a little on cost (like me) can also find it on the following site:

https://www.thompsonsltd.co.uk/qevp5...r-soluble.html

It's listed there at £21.59 (ignore the silly RRP they give), and because I live in NI, I always get stung for additional shipping charges, so I always shop around.
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Old 26th February 2020, 05:52 PM
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Watched a few YouTube videos about this stuff, and seems very impressive, so ordered some. Anyone wanting to save a little on cost (like me) can also find it on the following site:

https://www.thompsonsltd.co.uk/qevp5...r-soluble.html

It's listed there at £21.59 (ignore the silly RRP they give), and because I live in NI, I always get stung for additional shipping charges, so I always shop around.
And, its also for 5ltrs for £21.99 and not 1 US Gal (3.78ltrs) for £29.99 on the Amazon site.
The MSDS Attached) doesnt give its composition - just has it as a "chelator/detergent" - but it does seem to be remarkably benign for something that eats rust.
Attached Files
File Type: pdf EvapoRustMSDS.pdf (55.1 KB, 390 views)
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Old 26th February 2020, 06:18 PM
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And, its also for 5ltrs for £21.99 and not 1 US Gal (3.78ltrs) for £29.99 on the Amazon site.
Now how did I miss that! Must get the eyes checked. Oddly enough, I came across an Irish site that was advertising it as "3.78 litres (1 UK gallon)".
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My DIY jobs - Replaced alarm horn, Replaced Coolant Temp sensor, Updated RNS-D firmware, Installed Reversing Camera and Digital TV, Dashcam Installation, Retrofitted Rear Blinds, Auto-Dimming Rear View Mirror, Chrome Boot Struts

Sold! 2008 S8 D3 5.2 V10 - Engine: BSM, Gearbox:KLW, Colour:LY7F Suzuka Grey Pearl Effect, Interior:Black/Black with Silver/Black valcona leather with carbon atlas inserts, Bang & Olufsen, Heated windscreen, Soft-close doors, TV, DAB, AMI, Quad Zone, Auto Boot, Auto dim Mirrors, Keyless entry, PDC with rearview camera, AFS II Headlights

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Old 26th February 2020, 08:04 PM
MikkiJayne MikkiJayne is offline
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Good spot on the 5 litre one

I've got a brake caliper bracket soaking overnight for a before/after shot
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Old 27th February 2020, 07:51 AM
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Thanks for the tip MJ.


I'm guessing that whatever is in the stuff likes oxygen (even more than iron does) and is able to react with the oxygen in the iron, removing it and therefore reversing the rusting process.

But presumably that would make it react with the oxygen in the air too, causing it to become saturated if not kept in a sealed container? .... unless it somehow reacts only with certain oxides ...
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Cars Owned:
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(Black, with all black premium interior and carbon fibre décor, 21" sonic carbon twin turbine wheels and FSD capability)

The Audi Era: '97 A8 4.2 (Ming Blue) --> '96 A8 4.2 QS (Dark Green) --> '02 FE S8 (present)
The Citroen Era: '84 BX 1.6 RS --> '89 BX 1.9 DTR Turbo --> '94 XM 2.0L Turbo --> '96 XM 2.0L Turbo Exclusive --> '00 Xantia Activa 2.0L Turbo
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Old 27th February 2020, 07:56 AM
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Originally Posted by moltuae View Post
Thanks for the tip MJ.


I'm guessing that whatever is in the stuff likes oxygen (even more than iron does) and is able to react with the oxygen in the iron, removing it and therefore reversing the rusting process.

But presumably that would make it react with the oxygen in the air too, causing it to become saturated if not kept in a sealed container? .... unless it somehow reacts only with certain oxides ...
I think the "magic" explanation is better Mark

I think the explanation lies with it being described as a "Chelator". Chelation is a type of bonding of ions and molecules to metal ions. It involves the formation or presence of two or more separate coordinate bonds between a polydentate (multiple bonded) ligand and a single central atom. These ligands are called chelants, chelators, chelating agents, or sequestering agents. They are usually organic compounds.
Chelation is useful in applications such as providing nutritional supplements, in chelation therapy to remove toxic metals from the body, as contrast agents in MRI scanning, in manufacturing using homogeneous catalysts, in chemical water treatment to assist in the removal of metals, and in fertilizers. (Wikipedia explanation ....... not mine!!)
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Last edited by David's8; 27th February 2020 at 08:01 AM.
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  #7  
Old 27th February 2020, 08:20 AM
MikkiJayne MikkiJayne is offline
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So by that description, it likes iron even more than oxygen does, and is able to extract it from the iron oxide therefore removing the rust. If you leave things in it too long they get a black film over the top which needs washing off. This is especially pronounced with cast iron with a high carbon content. I wonder if once the rust is gone it then starts trying to remove iron molecules from the object itself, and in the case of cast, it leaves the carbon behind?
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Old 27th February 2020, 09:55 AM
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Originally Posted by David's8 View Post
I think the "magic" explanation is better Mark

I think the explanation lies with it being described as a "Chelator". Chelation is a type of bonding of ions and molecules to metal ions. It involves the formation or presence of two or more separate coordinate bonds between a polydentate (multiple bonded) ligand and a single central atom. These ligands are called chelants, chelators, chelating agents, or sequestering agents. They are usually organic compounds.
Chelation is useful in applications such as providing nutritional supplements, in chelation therapy to remove toxic metals from the body, as contrast agents in MRI scanning, in manufacturing using homogeneous catalysts, in chemical water treatment to assist in the removal of metals, and in fertilizers. (Wikipedia explanation ....... not mine!!)
I should've paid more attention in Chemistry lessons (instead of making my own experiments and setting fire to stuff with the Bunsen burners).

I wasn't aware of this 'Chelation' you speak of. Interesting stuff; I need to do some reading. In the meantime, I think you're right, "magic" will do. Or maybe 'witchcraft'. To paraphrase Python, 'if it looks like witchcraft, it must be witchcraft!'
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2002 FE S8 Ebony Black Pearl
------------------------------------------------------

------------------------------------------------------
Cars Owned:
The Tesla Era: 2020 Model S Performance Ludicrous+ (present)
(Black, with all black premium interior and carbon fibre décor, 21" sonic carbon twin turbine wheels and FSD capability)

The Audi Era: '97 A8 4.2 (Ming Blue) --> '96 A8 4.2 QS (Dark Green) --> '02 FE S8 (present)
The Citroen Era: '84 BX 1.6 RS --> '89 BX 1.9 DTR Turbo --> '94 XM 2.0L Turbo --> '96 XM 2.0L Turbo Exclusive --> '00 Xantia Activa 2.0L Turbo
The Banger Era: '76 1.2L Lada VAZ-2101 (Ruski Fiat 124) --> '80 1.7L Morris Ital HL, finished in Ermine White and Rust
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