Talk:Red fuming nitric acid

Chemistry Low‑importance

	This article is within the scope of WikiProject Chemistry, a collaborative effort to improve the coverage of chemistry on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.ChemistryWikipedia:WikiProject ChemistryTemplate:WikiProject ChemistryChemistry articles
Low	This article has been rated as Low-importance on the project's importance scale.

Rocketry

	Rocketry portal This article is within the scope of WikiProject Rocketry, a collaborative effort to improve the coverage of rocketry on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.RocketryWikipedia:WikiProject RocketryTemplate:WikiProject RocketryRocketry articles
???	This article has not yet received a rating on the project's importance scale.

HF as a corrosion inhibitor?[edit]

I was a little taken aback reading in the Experiments section that HF is added as a corrosion inhibitor. One of the few factoids I thought I knew about chemistry was that hydrofluoric acid is itself extremely corrosive. I don't doubt the article, but maybe one of you experts can add a few words of explanation on how the HF has a corrosion inhibiting effect. --Chetvorno^TALK 10:15, 30 May 2014 (UTC)[reply]

Fluoride, being an anion with a dense charge, might be expected to bind tightly to certain metals. The situation would be analogous to passivation of metals (Al, Si) by strongly adhering oxides. Here is a quote from a technical source "Carbon steel is commonly used with liquid or gaseous anhydrous hydrofluoric acid up to 100 – 150 C. Carbon steel is passivated by the formation of a layer of iron(III) fluoride." See Aigueperse, Jean (2005), "Fluorine Compounds, Inorganic", Ullmann's Encyclopedia of Industrial Chemistry, Weinheim: Wiley-VCH, doi:10.1002/14356007.a11_307 {{citation}}: Unknown parameter |coauthors= ignored (|author= suggested) (help).--Smokefoot (talk) 15:32, 30 May 2014 (UTC)[reply]

Ah, I see. That makes sense. Thank you, sir. --Chetvorno^TALK 20:46, 30 May 2014 (UTC)[reply]

External links modified (January 2018)[edit]

Hello fellow Wikipedians,

I have just modified 3 external links on Red fuming nitric acid. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:

Corrected formatting/usage for http://publications.drdo.gov.in/gsdl/collect/defences/index/assoc/HASH014d.dir/doc.pdf
Added archive https://web.archive.org/web/20060408080735/http://www.npi.gov.au/database/substance-info/profiles/65.html to http://www.npi.gov.au/database/substance-info/profiles/65.html
Added archive https://web.archive.org/web/20030429160808/http://www.astronautix.com/props/nitidjpx.htm to http://www.astronautix.com/props/nitidjpx.htm

When you have finished reviewing my changes, you may follow the instructions on the template below to fix any issues with the URLs.

This message was posted before February 2018. After February 2018, "External links modified" talk page sections are no longer generated or monitored by InternetArchiveBot. No special action is required regarding these talk page notices, other than regular verification using the archive tool instructions below. Editors have permission to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the RfC before doing mass systematic removals. This message is updated dynamically through the template {{source check}} (last update: 18 January 2022).

If you have discovered URLs which were erroneously considered dead by the bot, you can report them with this tool.
If you found an error with any archives or the URLs themselves, you can fix them with this tool.

Cheers.—InternetArchiveBot (Report bug) 20:11, 21 January 2018 (UTC)[reply]

No reason for a separate article[edit]

I see no reason to have a separate article for this particular grade of nitric acid. The contents should be merged back into the corresponding section of nitric acid, and some details could be trimmed or factored out. For example, the details of the resistance of metals to corrosion is too technical for Wikipedia. --Jorge Stolfi (talk) 17:03, 18 February 2019 (UTC)[reply]

It would help a lot if you trailed a centralised discussion here (At Talk:Nitric acid?) rather than repeating it in isolation everywhere. How many of these did you post? Andy Dingley (talk) 18:21, 18 February 2019 (UTC)[reply]

My fault. I did suggest the merge also on Talk:Nitric acid, but forgot to say that here. --Jorge Stolfi (talk) 01:23, 19 February 2019 (UTC)[reply]