Metal and iron dissolving

[Vendrek]

I want to know a strong chemical , chemical formula or any acide used to quickly dissolve and corrode iron and metal. Thanks

[chenbeier]

Any strong acid like hydrochloric acid will do it.

But not every metal  can be dissolved.

[Sensei]

For some metals you need Aqua Regia.

https://en.wikipedia.org/wiki/Aqua_regia

 

[Vendrek]

14 hours ago, chenbeier said:

Any strong acid like hydrochloric acid will do it.

But not every metal  can be dissolved.

Thanks u for u answer but i used HCL and H2SO4 on that , thats not work, and the metal i wanna dissolved like this pic.thanks

[Bufofrog]

It looks like rebar so HCl should work.  You know it will take quite a while to dissolve, right?

 

[Vendrek]

7 minutes ago, Bufofrog said:

It looks like rebar so HCl should work.  You know it will take quite a while to dissolve, right?

 

Thank u for u answer but ,How long will that take?

[chenbeier]

Get some heat to it. 40° C. You want to dissolved the whole piece takes some hours.

[Vendrek]

13 hours ago, chenbeier said:

Get some heat to it. 40° C. You want to dissolved the whole piece takes some hours.

Thank u for u answer. I will do that, but if there any other ways i wanna learn about that , thank u.

[ScienceNostalgia101]

I'm a little reluctant to butt in, but I'm slightly concerned that the OP seems somewhat new to chemistry (I don't have much hands-on experience but I've done a few chem courses in college and watched a lot of chem videos) so I figured just in case OP plans on doing this indoors I should ask whether or not rebar releases toxic fumes when dissolved in hydrochloric acid like silver does in nitric. Because if it does, it might be an idea to do this outdoors or in a fume hood.

[chenbeier]

Of course all safety measures has to taken in account.

Conc. Hydrochloric acid can release HCl gas. The reaction develops hydrogen. Good ventilation is necessary. Also PSA has to be worn. Goggles, gloves, maybe a mask.

[studiot]

21 hours ago, Vendrek said:

Thank u for u answer. I will do that, but if there any other ways i wanna learn about that , thank u.

That's a heftly 7 inch lump of 1 inch rebar you have shown.

It doesn't look stainless, which would offer good resistance to hydrochloric or sulphuric acids.

But stainless rebar can look dull like that. It is not higly polished like cutlery.

It looks more like standard high tenisle steel with the normal black oxide coating.

The black oxide is what give cast iron its high corrosion resistance.

You would have to expose clean metal to get the solution going.

Even then, if it is a high silicon steel it might still be resistant.

Quote

High-silicon cast irons represent the most universally corrosion-resistant alloys available at moderate cost. When silicon levels exceed 14.2%, high-silicon cast irons exhibit excellent resistance to H2SO4, HNO3, HCl, CH3COOH, and most other mineral and organic acids and corrosives.

 

Corrosion of Cast Irons - ASM International

 

Why do you need to dissolve such a large amount ?

Would some shavings not do ?

[ScienceNostalgia101]

Hmm... I didn't know cast iron could resist hydrochloric acid. Would it be comparably resistant against aqua regia or piranha solution?

Edited December 24, 2020 by ScienceNostalgia101