Talk:Aliphatic compound

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Cyclic aliphatic compounds[edit]

The article says, "aliphatic compounds are non-aromatic and non-cyclic". This requirement that it not be cyclic is consistent with sources such as Hampel, Glossary of Chemical Terms, 2nd edition (1992), page 11 and Hackh's Chemical Dictionary, 5th edition (1987), page 22. However, the IUPAC definition provided at IUPAC, Pure and Applled Chemistry, 67, 1307-1376 (1995), page 1313 says, "aliphatic compounds: Acyclic or cyclic, saturated or unsaturated carbon compounds, excluding aromatric compounds". Since IUPAC sets the standard in defining chemical nomenclature, and since their definition permits cycles, I question whether the Wikipedia definition should say "non-cyclic", and suggest that, at a minimum, it should state that the term is used sometimes with, and sometimes without, a bar on cycles. Comments? Dr. Mark L. Berch 9/19/2005

I just stumbled on this page by chance and completely agree with your sentiments. Feel free to modify the article as you see fit. The joy of Wikipedia is that you can be bold and make these sorts of changes yourself without the bother of establishing consensus. :-) Best, David Iberri | Talk 21:37, 19 September 2005 (UTC)

This article contradicts the entry on alicyclic compounds

I've corrected this blatant error. --Itub 08:14, 28 June 2007 (UTC)

Some questions[edit]

Hello I just wnated to add some questions: 1.What is the meaning of "aliphatic" compounds and where has this word been derived from? 2.Isn't it possible to "create" cyclic patterns of aliphatic compounds as well? If yes then why were cyclic compounds not considered as aliphatic? Aamil Syed Naeem, India 07/30/2006

"Due to it being a non-aromatic compound, aliphatic petroleum solvent is used as a starter for barbecues" Is it the toxicity that prevents using aromatic ones?... the why is not explained. - Ashi Starshade 21:20, 28 January 2007 (UTC)

I would like someone to clarify whether the term aliphatic can refer to non-aromatic cyclical compounds. As of August 13, 07 this article contradicts itself quite blatantly. Blocky 07:35, 13 August 2007 (UTC)


Aliphatic aldehydes should be mentioned in the article. Badagnani 05:05, 24 October 2007 (UTC)

aliphatic compounds[edit]


alkanes are the simplest class of organic compounds. they are made of carpon and hydrogen atoms only and contain two types of bonds,carbon-hydrogen (c-H)and carbon-carbon (c-c)single covalent bonds they do not have functional groups

alkanes from ahomologous series with the general formula CnH2n+2,where n is the number of the carbon atoms in the molecule. —Preceding unsigned comment added by (talk) 11:25, 11 October 2008 (UTC)

"open chain" redirect.[edit]

'Open chain' redirects here, but isn't that technically incorrect if an "aliphatic compound" is one that does not contain aromatic rings, while an 'open chain' compound is one where it has aromatic rings but they're not adjacent and instead attached via a chain structure? Nagelfar (talk) 04:06, 13 November 2008 (UTC)

I wouldn't call an aromatic compound "open chain". To me, "open chain" implies an acyclic compound. Some aliphatic compounds are acyclic, but no all, and not all acyclic compounds are aliphatic. The redirect is misleading, especially since this article doesn't use the term "open chain" at all; it could give readers the impression that "open chain" is a synonym for "aliphatic compound". --Itub (talk) 12:13, 13 November 2008 (UTC)
Oh, wait, I see. You were probably referring to the use of "open chain" in alkaloid chemistry, or for opiates as used in the Phenadoxone article. Maybe it would be better to start an article about that, because it has nothing to do with aliphatic compounds. --Itub (talk) 12:19, 13 November 2008 (UTC)
Either way, you agree "open chain" should not redirect here. Would there be a better place to redirect it to, or might it be able to warrant it's own article and started as a stub that won't get tagged for deletion? Nagelfar (talk) 10:00, 22 December 2008 (UTC)

simplest aliphatic compound[edit]

This page says: The simplest aliphatic compound is methane (CH4).

By what definition? Ethyne contains fewer atoms, and is a simpler configuration as the atoms are arranged linearly, methane has a three dimensional structure. —Preceding unsigned comment added by (talk) 14:40, 21 October 2009 (UTC)