Talk:Isopropyl alcohol

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How it is denatured?[edit]

The intro paragraph says it is sometimes denatured (why? to prevent people for using it for drugs, etc?) I'm assuming it is denatured by adding methanol, like with denatured ethanol, but this could use some clarification. — Preceding unsigned comment added by SpiralTurtle (talkcontribs) 09:17, 15 November 2013 (UTC)

IPA for cleaning records[edit]

I'm worried about the statements: "...used to give second-hand or worn non-vinyl phonograph records newer-looking sheen" and "Isopropyl alcohol should not be used to clean vinyl records as it may leach plasticizer from the vinyl making it more rigid[citation needed]." IPA can be found in lots of proprietary record cleaning solutions for vinyl records, sold worldwide. Homebrew vinyl cleaning solutions for vaccum and immersion-based record cleaners made using IPA, distilled water and an optional surfactant/wetting agent are used by many knowledgable collectors, libraries and archives (though many also advocate rinsing the record in distilled water alone afterwards, to remove all traces of the chemicals). I have never read or heard the claim anywhere else (besides this article) that IPA is significantly harmful to vinyl records. It is, however, widely acknowledged as being harmful to shellac records (because it causes binding chemicals to leach out of the shellac/filler mix and then the whole record just disintegrates) and one-time phonograph recordings, e.g. acetate or nitrocellulose lacquer on a glass or steel substrate (because it dissolves the lacquer). The only guaranteed to be totally safe way to wet clean these records (and even then, not all of them) is with distilled water only. I suspect that the author of these remraks in the main article is confusing vinyl with shellac. LDGE (talk) 21:13, 6 February 2014 (UTC)


I added a section about vinyl record cleaning, having done many months of research to prove that IPA / water mixes did not de-vinylise records, but this was removed. As someone who has been formulating record cleaning agents for many years, IPA should never bevput on shellac records, acetates or laquers as it will destroy them. (PaulDocStewart (talk) 17:06, 19 July 2014 (UTC))

Repainting?[edit]

Is 'it can also be used to clean paint or other oil-based products so that they may be reused, commonly known as "repainting." ' an error, (or a joke?) 109.176.195.159 (talk) 07:44, 22 March 2014 (UTC)

Toxicology[edit]

I have an issue with the statement, "Around 15 g of isopropyl alcohol can have a toxic effect on a 70 kg human if left untreated.[20]" Link 20 does not lead to proof (at least not directly, anyways). I am uncertain of two things. One, the definition, severity, and duration of "toxic effect". Two, how 15g/kg of isopropyl alcohol will elicit this effect: Drinking 15g/kg, having 15g/kg in blood stream, inhaling 15g/kg, soaking yourself with 15g/kg, or something else?

I followed one of the links on the page that link 20 leads to, and found that you can access the MSDS from: http://www.fisher.co.uk/index.php/en/msds-search By entering the following catalogue number under the SDS search: P/7508/17 — Preceding unsigned comment added by 174.3.225.120 (talk) 23:02, 16 June 2014 (UTC)

Disinfectant/Antiseptic[edit]

I'm curious as to how isopropyl alcohol disinfects and its comparisons to other disinfectants. The information I have about isopropyl alcohol comes largely from what I've read and heard, and I was hoping for some clarification from a more trustworthy source like wikipedia. I hope that this is the appropriate way to request information from someone who knows? Admittedly more important to me, I hope that this is an EFFICACIOUS way to make such a request!

That which I was hoping to learn more about, and in all areas I mean 99.9% isopropyl alcohol (as opposed to the 70% isopropyl alcohol, both of which are commonly sold in stores, but information might be useful to many other people on 99.9%, 70%, isopropyl wipes, and isopropyl gels ('hand sanitisers')):

From what I've read and heard, isopropyl alcohol kills every virus ever found (what, not even one can survive isopropyl???), kills most if not all bacteria, and does not provide any kind of permanent disinfecting property - that is, shortly after the isopropyl alcohol has been applied to a surface it will have evaporated off and will no longer kill off virii and bacteria, unlike some other chemicals which can remain and keep killing off virii and bacteria for some more significant span of time.

Isopropyl can destroy bacteria and/or virii by cytoplasmic disruption (rupturing the cell walls of bacteria?), denaturing proteins, even protective sheaths around virii, and mild thermal disruption? Is this true? Any other methods?

How effective is isopropyl alcohol at killing virii and bacteria? I think it's dangerous to put isopropyl alcohol into a wound that is deep enough to allow a significant amount of the alcohol to enter the blood stream, but I'm uncertain. Does applying 70% isopropyl alcohol actually increase infection risk by killing off some of the human cells and only some of the enemy bacteria/virii, leaving the remaining enemy bacteria/virii with a 'clean slate' (weaker enemy bacteria/virii killed off, many human self-defence cells killed off, a lot of dead cells around to eat and multiply with, etc)? — Preceding unsigned comment added by 174.3.225.120 (talk) 23:18, 16 June 2014 (UTC)

Uses: Solvent section[edit]

This section is riddled with 'citation needed' and several other pointers in certain sentences, but not in others. For example why does:

"It is used to clean LCD and glass computer monitor screens (at some risk to the anti-reflection coating on some screens..."

need a citation but:

"...and used to give second-hand or worn non-vinyl phonograph records newer-looking sheen"

does not? The next sentence is the same, and it makes for a messy read. I would suggest removing them altogether since everything mentioned is very common knowledge and widely accepted anyway due to it being one of the more common solvents that people use. — Preceding unsigned comment added by 86.141.165.65 (talk) 22:32, 4 July 2014 (UTC)

IUPAC Name[edit]

In the infobox, the "IUPAC Name" is "isopropyl alcohol", but is "isopropyl" proper IUPAC naming? Busukxuan (talk) 15:43, 27 July 2014 (UTC)