Talk:Fumaric acid

message: Why is this article in :Category:Chemical element symbol templates?  There is something weird with it, but I can't find it. --Kenyon 09:12, 27 November 2005 (UTC)
replies: text: It's because you added subst to the templates that link to the chemical symbols, so that it read  instead of just : the entire template was thus inserted into the article, including the template category. The moral is "don't use subst for the chemical element symbol templates"! Physchim62 (talk) 09:44, 27 November 2005 (UTC)
replies: text: Now they could be subst'd after that noinclude block is added to each one, right?  Because on Wikipedia:Subst the chemical templates are listed under "Templates that should be subst'd". --Kenyon 18:23, 27 November 2005 (UTC)
thread_title:  Category 

message: The image shown is actually a structural diagram of Maleic Acid, not fumaric. This is so because fumaric acid is a trans isomer of butenedioic acid, not a cis isomer (the OH and O groups should be on opposite sides of the final carbons).
:The image is correct.  Fumaric acid is the trans isomer, which is what is shown in the image.  Maleic acid is the cis isomer, which is what is shown in the image on that page.  --Ed (Edgar181) 18:14, 10 October 2006 (UTC)
thread_title:  Diagram 

message: In the diagram how is it the trans isomer if the OH groups are both on the bottom, and the O groups are both on the top of the double bond?  Shouldn't they be on opposite sides?—Preceding unsigned comment added by 64.21.7.136 (talk • contribs) 
:The picture is correct, there is rotation around the single C-C-bonds, and the trans describes the conformation of the double bond.  But apparently the picture is a bit misleading.  Maybe someone has to change the picture.  But I hope this helps.  --Dirk Beetstra T C 18:25, 10 November 2006 (UTC)
replies: text: Image:Fumaric acid.svg looks perfect to me. I don't see what the confusion is about. —Keenan Pepper 19:52, 10 November 2006 (UTC)
thread_title:  cis or trans? 

message: This article talk page was automatically added with  banner as it falls under :Category:Food or one of its subcategories. If you find this addition an error, Kindly undo the changes and update the inappropriate categories if needed. The bot was instructed to tagg these articles upon consenus from WikiProject Food and drink. You can find the related request for tagging here . Maximum and carefull attention was done to avoid any wrongly tagging any categories , but mistakes may happen... If you have concerns , please inform on the project talk page -- TinucherianBot (talk) 17:39, 3 July 2008 (UTC)
thread_title: [[WP:FOOD|WikiProject Food and drink]] Tagging

message: make your mind up.  —Preceding unsigned comment added by 82.42.32.182 (talk) 21:50, 23 October 2008 (UTC)
thread_title:  colourless crystalline or white solid 

message: Why are there no relevant citations for all of the "facts" presented here? Rikku (talk) 18:28, 24 January 2009 (UTC)
thread_title: References/Citations

message: Thishttp://pubs.acs.org/doi/abs/10.1021/je9001637 paper gives solubility values in mol fraction. The given value for water is higher than the value of 4.9g/l currently on the page. I would like to add these solvents with g/L values, can someone check my calculations please:
at 297 K / 24 *C	Solvent Mol Wt.	mol fraction*10^3	mol fraction	[mol fumaric] /kg solvent	Solvent Density	[mol fumaric] /L solvent	Fumaric Mol Wt.	Solubility (g/L)
                	               	                 	=B/1000     	=(D*1000)/B              	               	=E*F                    	From wiki      	=G*H
Water           	18             	1.252            	0.0013      	0.0696                   	1              	0.069555556             	116.07         	8.1
Ethanol         	46.06          	17.83            	0.0178      	0.3871                   	0.789          	0.305424881             	116.07         	35.5
Isopropanol     	60.1           	20.23            	0.0202      	0.3366                   	0.786          	0.264572047             	116.07         	30.7
Testem (talk) 20:42, 23 August 2016 (UTC)
thread_title: Solubility in other solvents

message: fumarate redirects here and is mentioned in the Biology section, but it is not clear what it is. ... urea cycle shows it as the C4H2O4-- ion. ... so I've added that to the intro. - Rod57 (talk) 22:51, 19 February 2017 (UTC)
thread_title:  Should clarify ''fumarate'' 

message: The esters are so different, eg more toxic, that the Uses section could perhaps seperate Uses of the acid from Uses of the esters ? Or maybe one day we should split out fumaric acid esters ? - Rod57 (talk) 23:16, 19 February 2017 (UTC)
thread_title:  Could separate the acid from the esters 

message: I was just looking for this article in reference to a fumerate salt. So, fumerate was what I searched for. But, what came up was an article on schedule h of the Indian drug and cosmetics act of 1945. I think this page is a tad more relevant. Heh. VoidHalo (talk) 15:57, 23 November 2023 (UTC)
thread_title:  Searching "fumerate" should redirect here