Zinc chloride is currently a Chemistry and materials science good article nominee. Nominated by Keres🌕 Luna edits! at 18:32, 9 May 2024 (UTC) Anyone who has not contributed significantly to (or nominated) this article may review it according to the good article criteria to decide whether or not to list it as a good article. To start the review process, click start review and save the page. (See here for the good article instructions.)
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Zinc chloride was one of the good articles, but it has been removed from the list. There are suggestions below for improving the article to meet the good article criteria. Once these issues have been addressed, the article can be renominated. Editors may also seek a reassessment of the decision if they believe there was a mistake. | |||||||||||||
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Current status: Delisted good article |
Is zinc chloride really THIS soluble? Adding 432 grams of dry powder in 100 grams of water, and still say that it dissolves? Wim van Dorst July 8, 2005 19:43 (UTC).
I have tried to dissolve 100g in 1 L of H20 at 25 deg C. It doesn't work. I ought to have a pH 5 solution according to the MSDS, but I have a pH 5.5 solution and I estimate just under half the ZnCl2 remaining undissolved. Sigma-Aldrich have suggested lowering the pH of my solution, but I'm convinced the pH of the water wasn't a factor. I'm hoping Chemistry is wrong, and I'm right; so if anyone else would like to check this for themselves...
As an aside, does anybody know why we can't make a 10% solution of zinc chloride using de-ionised water, but we can make a 50% solution using distilled water? Thanks, Karl. 21/09/05.
What about the formation of zinc oxychloride (ZnCl2.5Zn0.6H2O)? . [1] 131.180.39.0 ( talk) 07:48, 6 May 2014 (UTC)
It's a common procedure to make ZnCl by adding HCl to an excess of Zinc carbonate, however the carbonate becomes soluble in acidic solutions. Could the problem be un-reacted Zn carbonate in solution and possibly the common ion effect? — Preceding unsigned comment added by QParallax ( talk • contribs) 18:02, 15 May 2015 (UTC)
Wait. Surely you are measuring the solubility in HCl, not water? Polymath uk ( talk) 08:14, 5 February 2023 (UTC)
This makes no sense (a mix of topics) and has no citations: "Typically this flux was prepared by dissolving zinc foil in dilute hydrochloric acid until the liquid ceased to evolve hydrogen, for this reason such flux was known as killed spirits. because of its corrosive nature it is not a suitable flux for situations where any residue cannot be cleaned totally away, such as electronic work. This property also leads to its use in the manufacture of magnesia cements for dental fillings and certain mouthwashes as an active ingredient. "
This article has been removed from the GA list due to a lack of in line citations. Tarret 18:14, 14 March 2007 (UTC)
This article failed good article nomination. This is how the article, as of March 20, 2007, compares against the six good article criteria:
When these issues are addressed, the article can be resubmitted for consideration. If you feel that this review is in error, feel free to take it to a GA review. Thank you for your work so far.
King of ♥ ♦ ♣ ♠ 19:49, 20 March 2007 (UTC)
King of ♥ ♦ ♣ ♠ 19:49, 20 March 2007 (UTC)
hm "percipitates or crystallizes" (crystallization being the more common term??)
I was missing this data on toxicity in the article. The LD-50 value gives you a rough estimate of the amounts when a substance will be toxic (like, if you're factor 100 or 1000 away from it it should be non-toxic for a single exposure). Not sure, if all of those should be entered, or only some of them, so I put them here for discussion first. They should probably go in the table in some way. LD50:
Source: http://www.camd.lsu.edu/msds/z/zinc_chloride.htm Iridos 04:15, 26 April 2007 (UTC)
It is not? It's a trace mineral, present in many enzymes (e.g. for zinc fingers), absolutely essential for the body and yet, you can be poisoned by it... But anyways, I cant see "flooding" by having a pretty long table. Space for text is not an issue in Wikipedia. Readability and a clear structure are, of course, and that was my concern (else I would have just edited the article). Why is it a problem, when people with small chemical knowledge enter safety data? If it makes them read the article and some related articles, they will probably learn a lot and I'm all for it :) Hm, apropos zero-knowledge - ORL-RAT is pretty clear. SCU is probably subcutane (?) MUS is a weird abbreviation for mouse (?!?) and -duh- IPR means intraperitoneal and I got no clue what GPG should be. Well, that makes the decision which of those to skip quite a lot easier *g*. Apropos cyanide - the cyanide anion doesnt have a very exciting space-fill model, so I would regard that one as cruft :) 199.74.98.127 03:50, 27 April 2007 (UTC)
Well, this is generally true for ionic substances - only a lack of solubility in water or decompositon in water can change this fact for any salt. Still, ZnCl2 is one major Zn2+ compound... Anyways - 'Four crystalline forms, so-called polymorphs, of ZnCl2 are known,' Is different from 'Four crystalline hydrates of zinc chloride are known' You didnt provide a source there... where's that from? 199.74.98.127 15:45, 27 April 2007 (UTC)
The fact that zinc chloride dissolves very well does not imply that it always dissociates. It is not a salt like but a rather covalent material. On concentrated solutions (or molten hydrates if you prefer) FTIR and EXAFS studies show various Zn-Clx-H2O complexes in existence. [1] Jcwf ( talk) 17:18, 7 November 2008 (UTC)
I have reorganized the article by adding a new section for reactions. This is IMO still only a B class article as there is much still missing- e.g. ZnCl2 chemistry in dry batteries, complexes to name a few areas. It still needs more rationalisation - theres a lot of good stuff here but it doesn't flow-- Axiosaurus ( talk) 12:43, 12 January 2009 (UTC)
Does Febreeze actually contain zinc chloride? How does it help "eliminating odour" as febreeze supposedly does?
And how does it have anything to do with "affinity to fabric" or "zinc chloride ability to dissolve natural fibre"? —Preceding unsigned comment added by 173.32.73.90 ( talk) 06:20, 9 June 2009 (UTC)
According to the article on Zinc-Carbon Batteries, this is used in them. Yet, this article makes no mention of that in its "Applications" section. I'd fix it myself, but you're supposed to cite outside references, and I'm too lazy to find one myself. 63.3.9.1 ( talk) 23:45, 17 February 2010 (UTC)
This section misleads zinc chloride as a viable cancer treatment. Both citations [1] [2] in the article are dubious about zinc chloride as an effective cancer treatment. This section should either be deleted or expanded upon zinc chloride as a questionable alternative medicine cancer treatment. — Preceding unsigned comment added by 76.219.105.65 ( talk) 06:08, 9 November 2014 (UTC)
References
The comment(s) below were originally left at Talk:Zinc chloride/Comments, and are posted here for posterity. Following several discussions in past years, these subpages are now deprecated. The comments may be irrelevant or outdated; if so, please feel free to remove this section.
Comment(s) | Press [show] to view → |
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The following suggestions were generated by a semi-automatic
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Last edited at 09:05, 21 March 2007 (UTC). Substituted at 11:17, 30 April 2016 (UTC)
Zinc chloride is currently a Chemistry and materials science good article nominee. Nominated by Keres🌕 Luna edits! at 18:32, 9 May 2024 (UTC) Anyone who has not contributed significantly to (or nominated) this article may review it according to the good article criteria to decide whether or not to list it as a good article. To start the review process, click start review and save the page. (See here for the good article instructions.)
|
This
level-5 vital article is rated B-class on Wikipedia's
content assessment scale. It is of interest to the following WikiProjects: | ||||||||||||||
|
Zinc chloride was one of the good articles, but it has been removed from the list. There are suggestions below for improving the article to meet the good article criteria. Once these issues have been addressed, the article can be renominated. Editors may also seek a reassessment of the decision if they believe there was a mistake. | |||||||||||||
| |||||||||||||
Current status: Delisted good article |
Is zinc chloride really THIS soluble? Adding 432 grams of dry powder in 100 grams of water, and still say that it dissolves? Wim van Dorst July 8, 2005 19:43 (UTC).
I have tried to dissolve 100g in 1 L of H20 at 25 deg C. It doesn't work. I ought to have a pH 5 solution according to the MSDS, but I have a pH 5.5 solution and I estimate just under half the ZnCl2 remaining undissolved. Sigma-Aldrich have suggested lowering the pH of my solution, but I'm convinced the pH of the water wasn't a factor. I'm hoping Chemistry is wrong, and I'm right; so if anyone else would like to check this for themselves...
As an aside, does anybody know why we can't make a 10% solution of zinc chloride using de-ionised water, but we can make a 50% solution using distilled water? Thanks, Karl. 21/09/05.
What about the formation of zinc oxychloride (ZnCl2.5Zn0.6H2O)? . [1] 131.180.39.0 ( talk) 07:48, 6 May 2014 (UTC)
It's a common procedure to make ZnCl by adding HCl to an excess of Zinc carbonate, however the carbonate becomes soluble in acidic solutions. Could the problem be un-reacted Zn carbonate in solution and possibly the common ion effect? — Preceding unsigned comment added by QParallax ( talk • contribs) 18:02, 15 May 2015 (UTC)
Wait. Surely you are measuring the solubility in HCl, not water? Polymath uk ( talk) 08:14, 5 February 2023 (UTC)
This makes no sense (a mix of topics) and has no citations: "Typically this flux was prepared by dissolving zinc foil in dilute hydrochloric acid until the liquid ceased to evolve hydrogen, for this reason such flux was known as killed spirits. because of its corrosive nature it is not a suitable flux for situations where any residue cannot be cleaned totally away, such as electronic work. This property also leads to its use in the manufacture of magnesia cements for dental fillings and certain mouthwashes as an active ingredient. "
This article has been removed from the GA list due to a lack of in line citations. Tarret 18:14, 14 March 2007 (UTC)
This article failed good article nomination. This is how the article, as of March 20, 2007, compares against the six good article criteria:
When these issues are addressed, the article can be resubmitted for consideration. If you feel that this review is in error, feel free to take it to a GA review. Thank you for your work so far.
King of ♥ ♦ ♣ ♠ 19:49, 20 March 2007 (UTC)
King of ♥ ♦ ♣ ♠ 19:49, 20 March 2007 (UTC)
hm "percipitates or crystallizes" (crystallization being the more common term??)
I was missing this data on toxicity in the article. The LD-50 value gives you a rough estimate of the amounts when a substance will be toxic (like, if you're factor 100 or 1000 away from it it should be non-toxic for a single exposure). Not sure, if all of those should be entered, or only some of them, so I put them here for discussion first. They should probably go in the table in some way. LD50:
Source: http://www.camd.lsu.edu/msds/z/zinc_chloride.htm Iridos 04:15, 26 April 2007 (UTC)
It is not? It's a trace mineral, present in many enzymes (e.g. for zinc fingers), absolutely essential for the body and yet, you can be poisoned by it... But anyways, I cant see "flooding" by having a pretty long table. Space for text is not an issue in Wikipedia. Readability and a clear structure are, of course, and that was my concern (else I would have just edited the article). Why is it a problem, when people with small chemical knowledge enter safety data? If it makes them read the article and some related articles, they will probably learn a lot and I'm all for it :) Hm, apropos zero-knowledge - ORL-RAT is pretty clear. SCU is probably subcutane (?) MUS is a weird abbreviation for mouse (?!?) and -duh- IPR means intraperitoneal and I got no clue what GPG should be. Well, that makes the decision which of those to skip quite a lot easier *g*. Apropos cyanide - the cyanide anion doesnt have a very exciting space-fill model, so I would regard that one as cruft :) 199.74.98.127 03:50, 27 April 2007 (UTC)
Well, this is generally true for ionic substances - only a lack of solubility in water or decompositon in water can change this fact for any salt. Still, ZnCl2 is one major Zn2+ compound... Anyways - 'Four crystalline forms, so-called polymorphs, of ZnCl2 are known,' Is different from 'Four crystalline hydrates of zinc chloride are known' You didnt provide a source there... where's that from? 199.74.98.127 15:45, 27 April 2007 (UTC)
The fact that zinc chloride dissolves very well does not imply that it always dissociates. It is not a salt like but a rather covalent material. On concentrated solutions (or molten hydrates if you prefer) FTIR and EXAFS studies show various Zn-Clx-H2O complexes in existence. [1] Jcwf ( talk) 17:18, 7 November 2008 (UTC)
I have reorganized the article by adding a new section for reactions. This is IMO still only a B class article as there is much still missing- e.g. ZnCl2 chemistry in dry batteries, complexes to name a few areas. It still needs more rationalisation - theres a lot of good stuff here but it doesn't flow-- Axiosaurus ( talk) 12:43, 12 January 2009 (UTC)
Does Febreeze actually contain zinc chloride? How does it help "eliminating odour" as febreeze supposedly does?
And how does it have anything to do with "affinity to fabric" or "zinc chloride ability to dissolve natural fibre"? —Preceding unsigned comment added by 173.32.73.90 ( talk) 06:20, 9 June 2009 (UTC)
According to the article on Zinc-Carbon Batteries, this is used in them. Yet, this article makes no mention of that in its "Applications" section. I'd fix it myself, but you're supposed to cite outside references, and I'm too lazy to find one myself. 63.3.9.1 ( talk) 23:45, 17 February 2010 (UTC)
This section misleads zinc chloride as a viable cancer treatment. Both citations [1] [2] in the article are dubious about zinc chloride as an effective cancer treatment. This section should either be deleted or expanded upon zinc chloride as a questionable alternative medicine cancer treatment. — Preceding unsigned comment added by 76.219.105.65 ( talk) 06:08, 9 November 2014 (UTC)
References
The comment(s) below were originally left at Talk:Zinc chloride/Comments, and are posted here for posterity. Following several discussions in past years, these subpages are now deprecated. The comments may be irrelevant or outdated; if so, please feel free to remove this section.
Comment(s) | Press [show] to view → |
---|---|
The following suggestions were generated by a semi-automatic
javascript program, and might not be applicable for the article in question.
|
Last edited at 09:05, 21 March 2007 (UTC). Substituted at 11:17, 30 April 2016 (UTC)