Talk:Acetic anhydride

NFPA rating
List of NFPA 704 ratings shows code as 3-2-1, this page shows 2-2-1. Which is correct? --Ben Applegate 08:00, 24 August 2006 (UTC)

Reference
Industrielle organische Chemie: Bedeutende vor- und Zwischenprodukte SIDS Report might be good for the article.--Stone (talk) 08:38, 8 February 2008 (UTC)

Verify
Can someone please verify that the IUPAC nomenclature is acetic anhydride rather than ethanoic anhydride: I believe the latter is correct, but the former is placed on the article. Richard  n  20:22, 10 February 2009 (UTC)

Acetic anhydride is right. See and. --Rifleman 82 (talk) 21:35, 10 February 2009 (UTC)
 * PubChem says acetyl acetate. -Shootbamboo (talk) 13:50, 28 June 2009 (UTC)

Structure
So why not draw it with the carbonyls not facing each other then?  H3C                     H3C \                       \    C==O                     C==O /                       /  O         instead use    O       \                        \ C==O                    C--CH3 /                       // H3C                         O  Visually, this seems much more like what the charge distribution model graphic is appearing to show.

There is free rotation about both C-O bonds, and both methyl groups are equivalent by 1H NMR. Chemists like symmetry and this depiction seems more popular. --Rifleman 82 (talk) 02:33, 24 October 2011 (UTC)

Abbreviation or shorthand nonsense?

 * When I was on the page for ethanoic acid, I read that it is „commonly“ abbreviated as Ac. I am not against the abbreviated of majuscule A & minuscule c [a very nice & convenient abbreviation if you ask me,] but accoding to scientific rules of chemical nomenclature, an abbreviation of a chemical shall only contain elements, not compounds. There is even an interesting category of the naming of chemicals. Throughout my study of chemistry, I have never encountered exceptions to these rules [nor have I ever encountered the abbreviation of Ac, except only for the element 89. All I am asking if you can please provide with a reliable reference to your claim, say an updated book that includes & describes the abbreviation.
 * Also, if it is not too much to ask can you also [anyone] fix the synonyms for the page Acetic anhydride. Ethyl_acetate, [though the chemical structure to acetic acid], is not the synonym for acetate anhydride. So, „Ethanoyl ethanoate“ is not the synonym for Acetate anhydride. As you can read by the chemical name itself, the suffix „-ide“ [being a single atom anion] is not the same as „-ate“ [being a polyatomic anion.] Then again, you can reference back to the derivative of acetic acid, acetate & argue the same. So, please: All I ask for everyone in Wikipedia is not to edit Wikipedia without assurance of reliable information, which means everyone needs to do their job to research before editing the page. Use the playground to carry out any mischievous experiments. Thank you.
 * 序名三「Jyonasan」 Talk Stalk  20:09, 29 October 2011 (UTC)
 * These are potentially useful suggestions and ideas. I think that most editors are pretty careful around the chemistry pages. The consensus seems to be that we not focus on formal nomenclature rules, which can distract from the otherwise very taxing problem of conveying the chemical concepts.  People reading these pages are trying to understand bonds and routes, not abbreviations.  We mainly use chemical formulas.  I agree that Ac is not what I usually see (mainly OAc). --Smokefoot (talk) 20:26, 29 October 2011 (UTC)

Off-topic chat
ex-USSR

Acetic anhydride was very popular among the junkies of ex-USSR for cooking heroin-like injectable drug from dry poppies, exactly like the ones sold in flower shops for $5 a poppy. A dose would take about 4-5 poppies so with that and time consumed on cooking and risks of bad or impure cook (a whole magic onto itself) - it makes more sense to just buy heroin from street drug dealers for $20 a dose--74.57.167.219 (talk) 01:08, 16 February 2015 (UTC)
 * Source? - Sum mer PhD  (talk) 18:43, 21 February 2015 (UTC)


 * Personal experience — Preceding unsigned comment added by 74.57.167.219 (talk) 20:10, 3 August 2015 (UTC)
 * Your personal experience is not a reliable source and cannot be used to add material to the article. As a result, you are not discussing improvements to the article, you are using the talk page for general discussion of the article topic. - Sum mer PhD v2.0 01:53, 4 August 2015 (UTC)

Solubility?
https://pubchem.ncbi.nlm.nih.gov/compound/7918#section=Solubility

pubchem says 12 g/100ml, the article says 2.6

?? — Preceding unsigned comment added by 71.245.70.197 (talk) 18:28, 22 February 2015 (UTC)

External links modified
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Omission from "Structure and properties" section
At the end of the last paragraph in "Structure and properties" there is a parenthetical note saying "see electron density diagram." There is no electron density diagram anywhere on the article page and there is no direct link to another page that would have this information, not even a reference. I assume this was just an oversight, but if no diagram is forthcoming then perhaps this note should be removed. Lumberjane Lilly (talk) 17:00, 30 April 2021 (UTC)