Talk:Arsine

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Chemical Structure[edit]

I did a picture for the info table, but don't understand the code the table was made with. If someone could post it the picture is: Image:Phosphine_structure.gif Arsine

Hey, can you revise that figure and put it up for stibine, which I have also been working on in addition to the AsH3 thing? the previous fig had planar molecule. Key data: H-Sb-H < = 91.7° and Sb-H distances of 1.707A. (note how the H-E-H angles approach 90 as one decends). Also while you are there, can you put in the Angstrom symbol in the text, I dont know how to do that. Thanks, --Smokefoot 01:02, 16 February 2006 (UTC)[reply]

Datapage[edit]

The data page is nearly empty? Why have one at all?Stone 22:32, 15 February 2006 (UTC)[reply]

  • It's not policy that it should be nearly empty ;) feel free to add any data you can find. The data pages exist to try to keep the length of the main tables down to reasonable proportions. Physchim62 (talk) 23:02, 15 February 2006 (UTC)[reply]

Pyrophoric... I think it is...[edit]

http://ptcl.chem.ox.ac.uk/MSDS/AR/arsine.html

I'm not going to argue with the guys who wrote this... the people at the PTCL know what they're talking about.


I have 15 years experience working with arsine and it is not pyrophoric that I have ever heard of or witnessed. Phosphine is arsine is not. —Preceding unsigned comment added by 204.253.245.126 (talk) 17:01, 3 March 2009 (UTC)[reply]

The CRC Handbook (89th Edition, Section 16, page 4) says AsH3 is pyrophoric: http://www.hbcpnetbase.com//articles/16_01_86.pdf. So we'll go with that unless a better source is available. Anecdotes are not acceptable as sources of information for Wikipedia articles!
Ben (talk) 19:49, 3 March 2009 (UTC)[reply]

This article seems to contradict itself[edit]

In the opening paragraph, it states that at concentration of 0.5 ppm, "it is possible to smell a slight, garlic-like scent". In the Chemical warfare applications section the article claims that arsine is LETHAL "in concentrations far lower than those required to smell its garlic-like scent." but the Toxicology section contradicts this by stating that although symptoms of Arsine poisoning manifest themselves at around 0.5 ppm, the lethal concentrations for both acute and chronic exposure are much higher : "Exposure to arsine concentrations of 250 ppm is rapidly fatal: concentrations of 25–30 ppm are fatal for 30 min exposure, and concentrations of 10 ppm can be fatal at longer exposure times. Symptoms of poisoning appear after exposure to concentrations of 0.5 ppm." Someone please see to this ASAP. Thanks. —Preceding unsigned comment added by 70.79.41.152 (talk) 20:41, 23 September 2007 (UTC)[reply]

The apparent contradiction arises, probably, from the duration of the exposure. One can get a whiff of arsne without dying, but prolonged exposure is more problematic for the smeller. The second problem is that the Wikipedia safety sections are often filled in by kids who can transcribe alarmist data on toxicity and hazards, but dont look for consistency, as you are.--Smokefoot 21:44, 23 September 2007 (UTC)[reply]

IUPAC name "Arsane" in infobox?[edit]

The infobox says that the IUPAC name is Arsane, however arsane is a red link. I guess that the IUPAC name really is arsine, but am not certain enough to change it. 87.114.132.237 (talk) 01:35, 22 November 2007 (UTC)[reply]

AsH3 is sometimes refered to as Arsane (e.g. Pitzalis et al., Chemical vapor generation of arsane in the presence of L-cysteine. Mechanistic studies and their analytical feedback, Analytical Chemistry 79 (16), 6324-6333, 2007) but most often as arsine. Arsine would probably be better. 138.250.27.43 (talk) 15:31, 9 January 2008 (UTC)regards,Ritchie[reply]

It may be interesting to note that the most likely place an ordinary citizen would encounter arsine is when large banks of lead acid accumulator batteries are charging. I used to be around large submarine batteries on charge and the smell is quite unique. I believe it was a result of the charging process. I believe this is correct - though it may have been stibine producing the odour. Most likely is that both arsine and stibine contribute to the characteristic smell. It is unnoticable when charging small everyday accumulators. Phil Scrutinator (talk) 00:08, 14 March 2008 (UTC)[reply]

Gutzeit test obsolete?[edit]

Under the Gutzeit test it says now obsolete. A modification of this technique which is considered as 'based on the Gutzeit test' is used for in-the-field measurement of arsenic in drinking water. The Arsenator produced by Wagtech is a good example (www.wagtech.co.uk/ShowProduct.php?catid=3&productid=9). A report by UNICEF (2006) (on the same web page) says the technique is excellent. Given UNICEF's involvement with the millions of people at risk of high As in drinking water in Bangladesh and West Bengal - this technique should be anything but obselete. 138.250.27.43 (talk) 15:35, 9 January 2008 (UTC)regards, Ritchie[reply]

Hi Ritchie, if you feel the article text should be changed accordingly please feel free to do so by changing the article, just make sure you get yourself a user account and do not forget to add the citation. V8rik (talk) 17:43, 9 January 2008 (UTC)[reply]

Citations needed[edit]

The toxicology section is largely unreferenced. I don't doubt the lethality of Arsine, but when your making claims about the lethal dosage of a substance, it really needs to be backed up with a source. I'm going to go back. There is a lack in-line citation in other sections as well which I'll mark. Again, I don't doubt that the article is factually correct, but for Wiki's sake they need to be backed up. --Pstanton (talk) 00:56, 16 February 2009 (UTC)[reply]

Erroneous entropy[edit]

It would seem that the quoted entropy value for the formation is off by 1000. kJ --> J please.

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General Properties[edit]

Following reference "INFR", "L'action simultanée de l'humidité et de la lumière ou la présence de certains catalyseurs, notamment l'alumine, favorise la décomposition du produit." - In french, "l-alumine" refers to alumina here, while "l-aluminium" (also used in the same article later on) refers to aluminium.

I checked the date where the info was added (6 Sep 2006, Rev ID: 74102347), and the only article I have found citing this is the article (correctly cited) above. However, there are now many sources that include this piece of information as "aluminium", which were all created or published after this piece of information was written on Wikipedia, and bear striking semblance to the Wiki page in terms of phrasing. I believe that they must have taken the erroneous translation on the Wikipedia page as well, so I'm not certain that they can be trusted.

I've changed it from "aluminium" to "alumina" (aluminium oxide), though I can't seem to find any bibliography (including the original) that expands on the point about it being notable. My only guess is its common use in removing arsine? --Tcinfinity (talk) 17:45, 7 June 2021 (UTC)[reply]

Similarly, the missing sources are hard to find (technically they should be dated before Sep 2006). I've included some citations for sources that correspond to the date where citation was requested, but they may not be the original citation that is free from influence of the current information on the wiki page. Feel free to edit or ping me if any further updates are needed.

I am able to find citations for "This compound is generally regarded as stable, since its decomposition into arsenic and hydrogen at room temperature takes place very slowly, unless a temperature of 230 °C is reached." (originally written in the referenced old 2006-state article above), but not for its "rapid" decomposition (which seems to have been added in rev 147577322). --Tcinfinity (talk) 02:27, 8 June 2021 (UTC)[reply]

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