Talk:Mercury (element)

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Notes[edit]

It is good. Midgley 00:56, 8 April 2006 (UTC) Article changed over to new Wikipedia:WikiProject Elements format by maveric149. Elementbox converted 12:32, 14 July 2005 by Femto (previous revision was that of 02:33, 14 July 2005).

Information Sources[edit]

Some of the text in this entry was rewritten from Los Alamos National Laboratory - Mercury. Additional text was taken directly from USGS Magnesium Statistics and Information, from the Elements database (via dict.org), Webster's Revised Unabridged Dictionary (1913) (via dict.org) and WordNet (r) 1.7

I think something is wrong with atmospheric mercury concentration even minimal 4 ng/L= 4ug/m3 that is way too much comparing to the dose mentioned later 0.7–42 μg/m3 —Preceding unsigned comment added by 78.62.105.82 (talk) 14:15, 10 November 2008 (UTC)

(via dict.org). Data for the table were obtained from the sources listed on the subject page and Wikipedia:WikiProject Elements but were reformatted and converted into SI units.

> converted into SI units
except for the 76 lb flask....

The cost of mercury is $3.50 per 1 gram Where did the graph of mercury in Wyoming's Fremont Glacier come from? Paul Studier 19:22, 12 August 2006 (UTC)

[1], see the image's description page Image:Mercury fremont ice core.png. Femto 20:23, 12 August 2006 (UTC)
Thanks. I didn't see it hiding in plain sight right under my cursor. Paul Studier 22:18, 12 August 2006 (UTC)

Question: Just exactly what are the poisonous affects of mercury, and how long does it take to begin actually harming a body, and how?

Mercury and its compounds react with the sulfur atoms in the amino acids in your body, destroying them.


Why is the picture sideways? Rmhermen 04:08, Nov 21, 2003 (UTC)


Please explain how "(along with exaggeration of the actual risk in the media)" is factual in relation to the dangers of broken mercury thermometers? ᚣᚷᚷᛞᚱᚫᛋᛁᛚ

This has already been discused in the past [2]. Mercury is no more dangerous than acids or petrol if it is handled properly.
Darrien 20:46, 2004 May 7 (UTC)

Question: Just how toxic is the mercury used in thermometers?

Junior High School Student 10:48, Feb 14, 2007 (EST)

Answer: Depends on whether you break open the tube and suck out the mercury; or the tube breaks and you eagerly sniff up all the fumes; or it breaks in your hand and mercury gets into the wound. But some people advocate evacuating the entire room and calling a clean-up squad. See Phase out in North America. --Uncle Ed 16:41, 14 February 2007 (UTC)

Atmospheric mercury pollution[edit]

Hi,

Quoting wiki: "Even though it is far less toxic than its compounds, elemental mercury still poses a significant environmental pollution problem due to the fact that mercury forms organic compounds inside of living organisms. Methyl mercury works its way up the food chain, reaching high concentrations among populations of some species such as tuna. Mercury poisoning in humans will result from persistent consumption of tainted foodstuffs."

One information, not included here, could help to clarify things. Gaseous elemental mercury is estimated to have an atmospheric residence time of about one year, making it subject to long-range atmospheric transport over global scales. Deposition fluxes in ecosystems vary according to regional parameters such as precipitation, land characteristics, vicinity of large emission sources and availability of gaseous oxydants.

I'll stop here.

D.D.

gallium liquid at room temp?[edit]

I've removed Gallium from the elements liquid at room temp, I don't think 302.91K realy counts as room temperature anymore. Incidentally, Caesium melts at 301.59K, and Francium at even less. --fvw* 02:40, 2004 Nov 11 (UTC)

Yeah, but you really can't attribute bulk characteristics to francium, seeing as how little there is of it on the planet at any given time. It's almost as bad as astatine.

I agree with the above person about francium. Even if it was a liquid, its intense radioactivity would cause it to self-boil.

Question for anyone.[edit]

What is Mercury's natural state?

What do you mean by 'natural state'? As far as the state of occurence, it mostly is found combined with another element such as sulfur or oxygen.

Mercury: use as Medicine in Ayurveda and Homoeopathy[edit]

The use of Mercury as medicine is very old in Ayurveda, the Indian system of medicine and also in Homoeopathy. This article does not contain information about this fact.

User:Dbbajpai1945@sify.com 9:45 PM IST 20 August 2006

You probably wouldn't want to use mercury in medicine of any kind unless you were sure that once it entered the body it would do no harm before the patient died anyway. Humans have no way of dealing with ingested mercury. It just goes in there and messes things up and, for the most part, stays there. But I suppose we should document poor medicine, too. European medicine used mercury as a treatment for syphilis, so it isn't just Indian medicine that (perhaps in desperate circumstances) resorted to mercury as a "magic bullet". rosejpalmer.

Well, ignoring the fact it doesn't fit the definition of medicine, you could argue that its use in homeopathy is safe since none of the "active ingredient" remains in a homeopathic remedy... 203.45.39.201 (talk) 01:22, 29 April 2013 (UTC)

Reclamation of mercury mines[edit]

I removed what I believe is a superfluous "the" from the sentence below:

For example, in 1976 the Santa Clara County, California purchased the historic Almaden Quicksilver Mine and proceeded to create a county park on the site, after conducting extensive safety and environmental analysis of the property.

This quote is false[edit]

I know for a fact that quote from text:

"Many former ores in Italy, Slovenia, the United States and Mexico which once produced a large proportion of the world's supply have now been completely mined out."

Is false for Slovenia. Idria mine here was not closed because it was mined out but because price of Mercury drastically fell in 1980s. It was similair in mines of Almadén Spain.

Quote from Wikipedia Alamaden article:

"In 2000, the mines closed due to the fall of the price of mercury in the international market, caused to the fall of its demand. However, Almadén still has one of the world's biggest reservoirs of mercury. A museum has been built, including visit to the mines (areas from 16th to 20th century)."

I don't know for other parts mentioned, I just suspect same happened there so I've rewriten only part for Spain and Slovenia.

Metals liquid at r.t.p.[edit]

"mercury is one of five metals that are liquid at or near room temperature and pressure" I believe that you need to add a sixth. NaK alloy is too: OK it is an alloy but the elemental nature of the five metals mentioned is not specified in the article.

The article says "one of the six elements". As to alloys, they are too many to mention here. Materialscientist (talk) 11:28, 11 July 2009 (UTC)

I came to this article looking for an explanation of why mercury is liquid at room temperature, when most other metals have very high melting points, but there isn't any.

I've added a popular explanation, but am not sure it will help. Materialscientist (talk) 11:28, 11 July 2009 (UTC)
No, it is very appropriate. It does beg some other questions though: the explanation seems to indicate a connection between melting point and conductance, yet there are elements with 'high' melting points yet low conductivity (La, Y, Sc, Mn) and elements with relatively high conductivity yet low melting point (Na, Ga, Al). —Preceding unsigned comment added by 85.232.196.151 (talk) 08:57, 31 August 2009 (UTC)
No. Melting point an number of atoms at certain atomic shells. Conductivity relates to the band structure, i.e. to how atoms are arranged and how do they interact via their electronic shells, not only to the number of outer electrons. On the fly, I don't know how to easily explain conductivity variation. Materialscientist (talk) 09:13, 31 August 2009 (UTC)

Archive and the image[edit]

1. Can someone with know-how please archive inactive threads?

2. Can someone increase the size of the infobox image by 1/3 or so? Its awfully small at the moment.

--Pstanton (talk) 17:37, 24 April 2009 (UTC)

/Archive 1. Not sure about the image, though; a blob of mercury looks pretty much like a blob, and the current picture at least shows it beading up. - 2/0 (cont.) 05:14, 11 June 2009 (UTC)

Uses in spectroscopy[edit]

The spectral lines of mercury are very useful for calibration of monochromators used in spectroscopy. Some of the strongest peaks should probably be mentioned along with links to more information on the subject. NIST has some good data http://physics.nist.gov/PhysRefData/Handbook/Tables/mercurytable2.htm http://physics.nist.gov/PhysRefData/Handbook/Tables/mercurytable3.htm 173.23.196.176 (talk) 12:32, 10 June 2009 (UTC)

WPMED[edit]

Could someone tell me how Mercury falls under WPMED before I remove the template? Renaissancee (talk) 23:46, 18 August 2009 (UTC)

Some mercury compounds were (or are) used in medicine; there are various toxicological aspects such as mercury poisoning through fish and direct contract with mercury compounds (mercury in glass thermometers, possibly). Have you read the article? Pyrotec (talk) 07:34, 19 August 2009 (UTC)
The is even a discussion above in "Mercury: use as Medicine in Ayurveda and Homoeopathy". Pyrotec (talk) 07:37, 19 August 2009 (UTC)

Mercury in gold mining[edit]

The article states that the use of mercury in gold mining has been mostly phased out. This would be quite a surprise to the indigenous people of South America, who are seeing their habitats, food sources, and own lives succumb to mercury poisoning -- use of mercury in gold mining is rampant there, on a scale not seen in the Northern Hemisphere. 69.108.2.30 (talk) 16:40, 31 October 2009 (UTC)

I think the editors were going by a few refs saying opposite. Note that ironically, WP is not about the truth, but about documented facts, thus if you could provide reliable references for your statement, it would be of great help. Thanks anyway. Materialscientist (talk) 00:30, 1 November 2009 (UTC)
There are some studies indicating that some poor people in slums in some southeast asian countries take very low-grade gold ore and do amalgamation in a saucepan, actually breathing the vapors it gives off. That is available on Nat Geo's website in an article called Gold, made a whole issue of it. I can't cite them here directly I think, but they did the work, they should get the credit. — Preceding unsigned comment added by SgntSchulz (talkcontribs) 20:53, 14 February 2012 (UTC)

It is currently (2012) being used in Zimbabwe in gold mining as the main technique or extracting gold from ore. Another strange use is in Moroccan magic where elemental Hg is used as an ingredient in magic spells, poured on to fires with other substances. You can buy it off the shelf in Abu Dhabi for this purpose, for example. — Preceding unsigned comment added by 94.200.1.231 (talk) 07:03, 20 March 2012 (UTC)

Vapor pressure?[edit]

Is there something wrong with the temperature in the vapor pressure table? I think maybe deg K and deg C were mixed up. Keith Henson (talk) 02:53, 24 November 2009 (UTC)

Sorry, I don't see anything wrong there, what do you mean? Materialscientist (talk) 03:19, 24 November 2009 (UTC)

Quicksilver[edit]

Seriously, no one included why it was called quicksilver? Its obscure enough that I had two hit up two different dictionaries to figure it out (was trying to figure out why something was being called quick when it had no connection to being fast). Quick, adjective, Etymology: Middle English quik, from Old English cwic; akin to Old Norse kvikr, definition: not dead, living, alive. Quicksilver was called quicksilver because it appeared to have life of its own (when compared to other metals) when observed in its pure form by early alchemists.--Draco18s (talk) 04:20, 14 December 2009 (UTC)

can someone answer me this please.?[edit]

i used to work at an optical lab back in 1995.i used a silvery liquid that looked like the one on the home page.i had to put it on a cold brass surface inside a ring that was also brass.after a few seconds the silvery liquid hardend . it was called a block i believe.it was stuck to the font of the lens.now the lens was ready to be grind to its to a size.my question is , was this silvery liquid i was working with mercury and is there any concerns i should have? —Preceding unsigned comment added by 71.103.29.129 (talk) 19:13, 11 January 2010 (UTC)

Probably not. Mercury does not solidify at 'ordinary' cold temperatures. More likely it was Gallium or a Gallium alloy, which are not especially toxic. — Preceding unsigned comment added by Pharmagiles (talkcontribs) 18:59, 25 January 2011 (UTC)

Greek Latin name?[edit]

In the introduction it says it is named Hydr- (watery) -agyros (silver) whereas in a different section is calls it hyrda- (water) -gyros (movement). Same name but two different meanings. Which is correct? —Preceding unsigned comment added by 92.25.42.93 (talk) 00:20, 1 April 2010 (UTC)

WHMIS data missing[edit]

The WHMIS data (toxicity, flammability, ...) is missing. (Adacus12 (talk) 19:38, 3 May 2010 (UTC))

What can destroy quicksilver...?[edit]

I'm very curious... —Preceding unsigned comment added by Yuriminaru12 (talkcontribs) 07:49, 10 July 2010 (UTC)

It is an element, so you can't 'destroy' it by chemical or normal physical processes. You can combine it with other elements to create less toxic compounds. Mercury reacts with sulphur to form mercury sulphide, so sulphur is used to help 'mop up' mercury spills.

Mercury form amalgams with many metals, and some are safe enough to use in dental repair. I have quite a few of these in my teeth. Some amalgam is lost through wear and ingested, but at levels comparable with natural levels.

Fish[edit]

I think this section should be changed slightly from "fish" to "Seafood" and point out the high concentration of mecury in other forms of seafood (namely whales and dolphins- which have higher concentrations of mercury, since they are consumed as well. KyprosNighthawk (talk) 09:35, 22 August 2010 (UTC) Whales and Dolphins are NOT SEAFOOD. They are marine mammals which are fully intelligent and thus by reason illegal and unmoral to mass murder and eat btw you spelled mercury wrong — Preceding unsigned comment added by 70.79.169.226 (talk) 13:41, 8 October 2011 (UTC)

Spain's recent output[edit]

Of the previous century, what is the greatest output Spain has produced for a year? That is to say, relative to the rest of the world. What is the greatest they have done in the postwar era?--82.134.28.194 (talk) 09:19, 5 October 2010 (UTC)

Reference 96 - 1mg/g sediment in Norwegian lakes[edit]

I find this 1 mg/g concentration of mercury in Norwegian lake sediment extremely high.

Some Norweigian lakes have a 0.1% mercury content in their sedimentary environment? I think that needs some re-interpretation. —Preceding unsigned comment added by 68.144.25.102 (talk) 06:46, 29 October 2010 (UTC)

Birds[edit]

New research has shown mercury poisoning to be associated with homosexual behavior in some birds.

Mercury seems to cause male ibises to nest together, according to scientists at the University of Florida in Gainesville.[1]

The study was published the Proceedings of the Royal Society B.

71.247.24.52 (talk) 10:03, 2 December 2010 (UTC)Mark2020

Historic uses[edit]

under that line, it was said that the allies put mercury on german planes for sabotage. i have found a spelling mistake "rhis would cause structural failure" —Preceding unsigned comment added by 174.112.8.48 (talk) 02:19, 9 December 2010 (UTC)

Thanks. Fixed. Materialscientist (talk) 03:06, 9 December 2010 (UTC)

Mercury Excretion And Mercury Excretion During Pregnancy[edit]

Inorganic mercury compounds also do not move as easily from the blood of a pregnant woman to her developing child. In a nursing woman, some of the inorganic mercury in her body will pass into her breast milk. Methylmercury that is in the blood of a pregnant woman will easily move into the blood of the developing child and then into the child's brain and other tissues. Like metallic mercury, methylmercury can be changed by your body to inorganic mercury. When this happens in the brain, the mercury can remain there for a long time. When methylmercury does leave your body after you have been exposed, it leaves slowly over a period of several months, mostly as inorganic mercury in the feces. As with inorganic mercury, some of the methylmercury in a nursing woman's body will pass into her breast milk. Referenced from ATSDR on January 22, 2011. 72.196.107.224 (talk) 21:29, 22 January 2011 (UTC)Samantha Mosias

Pronunciation[edit]

The pronunciation was moved the to the info box in 2010, but then someone added it back to the first sentence. There are also non-functional soundfile icons. I'd like to remove it again. The first sentence really needs simplification Bhny (talk) 00:01, 11 April 2011 (UTC)

Boiling / Melting Point[edit]

"With a freezing point of −38.83 °C and boiling point of 356.73 °C, mercury has one of the broadest ranges of its liquid state of any metal"

In my opinion, about 400K isn't a broad range of liquid state: cf. http://www.chemistry.patent-invent.com/chemistry/melting_boiling_point.html

Thus, the statement is of no meaning in my opinion and should be deleted. 153.97.109.2 (talk) 08:22, 14 April 2011 (UTC)

Thanks, it used to be "narrowest", but some ... body changed it. Materialscientist (talk) 08:42, 14 April 2011 (UTC)


Laboratory Testing Section[edit]

Hey, I noticed that there wasn't any information on the lab testing of Mercury. I added a section under Occurrence and think it will help. Kwells1989 (talk) 18:13, 31 May 2011 (UTC)

Thanks for that contribution. I'm concerned it's almost identical to the text given in the reference. Perhaps you can rephrase it, perhaps with a few other sources? --Rifleman 82 (talk) 19:48, 31 May 2011 (UTC)

Thanks for the suggestion! I've paraphrased a lot of it now. Kwells1989 (talk) 20:06, 31 May 2011 (UTC)

Mercury(IV) fluoride[edit]

Hi Smokefoot, we need to discuss the content you have deleted regarding Mercury(IV) fluoride. You assert recently added content by user Oliver.weber is a case of self-promotion of which there is no evidence. Also: over-specialization should not result in deletion, there exist other ways to deal with that. Please restore or discuss V8rik (talk) 12:54, 4 June 2011 (UTC)

You're correct, I should have explained my actions better. Basically Oliver added only references to Hrobarik et al. Here they are for the expansion of benzothiazole, where the added refs are to apps to nonlinear optics. The main action (of broader interest to readers) with benzothiazole is in med chem (Naturally Occurring Nitrogen–Sulfur Compounds. The Benzothiazole Alkaloids" Lucille Le Bozec, Christopher J. Moody Australian Journal of Chemistry 62(7) 639–647. doi:10.1071/CH09126) and anticorrosion agent:
  • Hrobarik, P.; Zahradnik, P.; Fabian, W. M. F. (2004). "Computational design of benzothiazole-derived push–pull dyes with high molecular quadratic hyperpolarizabilities". Physical Chemistry Chemical Physics 6: 495–502. doi:10.1039/b314150k. 
  • Hrobarikova, V.; Hrobarik, P.; Gajdos, P.; Fitilis, I.; Fakis, M.; Persephonis, P.; Zahradnik, P. (2010). "Benzothiazole-Based Fluorophores of Donor−π-Acceptor−π-Donor Type Displaying High Two-Photon Absorption". Journal of Organic Chemistry 75: 3053–3068. doi:10.1021/jo100359q. 
  • Hrobarik, P.; Sigmundova, I.; Zahradnik, P.; Kasak, P.; Arion, V.; Franz, E.; Clays, K. (2010). "Molecular Engineering of Benzothiazolium Salts with Large Quadratic Hyperpolarizabilities: Can Auxiliary Electron-Withdrawing Groups Enhance Nonlinear Optical Responses?". Journal of Physical Chemistry C 114: 22289–22302. doi:10.1021/10.1021/jp108623d. 
  • Zajac, M.; Hrobarik, P.; Magdolen, P.; Foltinova, P.; Zahradnik, P. (2008). "Donor–π-acceptor benzothiazole-derived dyes with an extended heteroaryl-containing conjugated system: synthesis, DFT study and antimicrobial activity". Tetrahedron 64: 10605–10618. doi:10.1016/j.tet.2008.08.064. 

Please check Oliver.Weber's other contributions, uniformly aimed at Hrobarik. The contribution to mercury was virtually an excerpt from one of his/her papers. Thanks for giving me a chance to explain. --Smokefoot (talk) 14:57, 4 June 2011 (UTC)

  • Hi Smokefoot, thanks , my own assessment was limited to the edits on the mercury page. I have send Oliver a kind note, see what happens. V8rik (talk) 19:40, 6 June 2011 (UTC)

Properties[edit]

There are some things missing from here, taste, it tastes like tangy, coppery silver spoon. The texture is heavy and smooth, somewhat silky and goes down like slow flowing water. Makes you feel bloated and constipated right away. But also add to this that ingesting will cause death. Projectmayhem666 (talk) 12:18, 21 July 2011 (UTC)

I willrey to find a credible source for that. But I know that ingestion of a pound of mercury is not lethal.--Stone (talk) 13:40, 21 July 2011 (UTC)
Mercury is quite heavy, a pound wouldn't be a large amount anyway what do you think, about 1 cmsq?? Projectmayhem666 (talk) 15:25, 21 July 2011 (UTC)
3kg is not a problem. [3] [4]--Stone (talk) 15:05, 24 July 2011 (UTC)


"This is a significant underestimate due to limited information, and is likely to be off by a factor of two to five."

This statement is not neutral in its current form. — Preceding unsigned comment added by Cragmonkey (talkcontribs) 02:05, 12 September 2011 (UTC)

Neutrality of "Releases in the environment" Section[edit]

"This is a significant underestimate due to limited information, and is likely to be off by a factor of two to five."

This statement is not neutral in its current form. Cragmonkey (talk) 02:06, 12 September 2011 (UTC)

I have no access to the referenced document but I assume it's a quote. Not necessarily a neutrality issue, power plants, gold mines, smelters, cement production, these are all industries subject to emission controls and regulations in one or more countries so emission figures will be available, at least for some of the plants. Based on technologies used and production volumes, estimates for other countries can be made. This isn't as easy for waste disposal which covers essentially all industries, businesses and households on earth.
But I am finding several statements that misrepresent the sources in Amalgam (dentistry) and Dental amalgam controversy. DS Belgium (talk) 00:57, 17 October 2011 (UTC)
I searched through the revisions and found that that sentence was added when that section was edited and the percentages were added. So unless someone wants to pay $35 to access the article that is used as the reference that NPOV tag is going to be there forever. Therefore the only way that that sentence is an NPOV violation is if that sentence is not in the reference. If that sentence is in the reference then it is not an NPOV violation. So, the choice is cough up $35 or delete the sentence and remove the NPOV tag. Dr. Morbius (talk) 04:25, 18 March 2012 (UTC)

Strange sentence, not showing up in "View source"[edit]

Under "Properties" the following sentence shows up:

i know right its so awsome

This sentence does not show up in the page wiki-source. Is this supposed to happen and am I just not getting it? I've got a screenshot someone needs one for troubleshooting purposes. 145.97.206.146 (talk) 16:56, 15 September 2011 (UTC)

Edit: Nevermind, just basic vandalism. Please ignore, already fixed. 145.97.206.146 (talk) 18:33, 15 September 2011 (UTC)

Should the dynamic viscosity be included in the property table?[edit]

I was thinking that since mercury is liquid at room temperature, it might be helpful to include its dynamic viscosity in the property table. Maybe under "Miscellanea"? 89.100.140.202 (talk) 18:22, 2 December 2011 (UTC)

Mercury Cell Chlor-Alkali Chemical Production[edit]

Reference 65 Dufault et al. DID NOT state that mercury cell technology "usage has largely been discontinued, replaced with other technologies that utilize membrane cells.[65]" Dufault et al. stated that mercury cell chlor-alkali products are used to produce thousands of other products including food ingredients.

Please correct this inaccurate interpretation of Dufault et al. (2009). Europe is the world's largest supplier of mercury cell chlor alkali chemicals. In 2010, mercury cell technology was used to produce 30.9% of all chlor-alkali chemicals in Europe. See pages 43 and 44 of Chlorine Industry Review 2010-2011 produced by Eurochlor at http://www.eurochlor.org/media/10677/annualreview-2010-hd.pdf

Mercury cell chlor-alkali chemicals continue to be used world wide in manufacturing many food ingredients. The international Food Chemicals Codex (FCC)5th Edition Revisions allow the following mercury levels in mercury cell chlor alkali chemicals:

Chlorine:

Dropped HMPb [Heavy metals as lead] No revision to Pb limit; 10 mg/Kg max No revision to Hg limit; 1 mg/Kg max

HCl:

Dropped HMPb Added Pb at 1 mg/Kg max No Hg limit

KOH, anhydrous:

Dropped HMPb Lowered Pb from 10 mg/Kg to 2 mg/Kg max No revision to Hg limit; 0.1 mg/Kg max

KOH, solution:

Dropped HMPb Lowered Pb from 10 mg/Kg to 2 mg/Kg max (100% basis) Lowered Hg from 1 mg/Kg to 0.1 mg/Kg max (100% basis)

NaOH, anhydrous:

Dropped HMPb Lowered Pb from 10 mg/Kg to 2 mg/Kg max No revision to Hg limit; 0.1 mg/Kg max

NaOH, solution:

Dropped HMPb Lowered Pb from 10 mg/Kg to 2 mg/Kg max (100% basis) Lowered Hg from 1 mg/Kg to 0.1 mg/Kg max (100% basis)


To see maximum allowable mercury in food grade caustic soda (chlor-alkali product) visit DOW link at

https://dow-answer.custhelp.com/app/answers/detail/a_id/14238

EPA published Guidelines for removing mercury from sodium hydroxide produced with mercury cell technology. The report essentially said that mercury in this product is very difficult if not impossible to remove. See report at

http://www.epa.gov/Region5/mercury/pdfs/sodiumhydroxidereport.pdf

If EPA link doesn't work, try http://www.epa.gov/Region5/mercury/reducing.html

Scroll down to find document entitled Guidelines for Technologies to Reduce Mercury.....

Mercury residue is allowed in a variety of food ingredients to include many food colors (yellow #5, yellow #6) and high fructose corn syrup.

See Codex Internation Food Standard links below for allowable mercury residue in chlorine used to bleach flour and mercury residue allowed in annatto extracts.

http://www.fao.org/ag/agn/jecfa-additives/specs/Monograph1/Additive-126.pdf

http://www.fao.org/ag/agn/jecfa-additives/specs/monograph4/additive-038-m4.pdf

Dufault et al. (2009) found that consumption of food colors yellow #5 and yellow #6 and/or high fructose corn syrup has been linked to the development of autism and ADHD.

Please add this reference. Dufault et al. (2009) Mercury exposure, nutritional deficiencies and metabolic disruptions may affect learning in children. Behavioral and Brain Functions, 5:44. Available at http://www.behavioralandbrainfunctions.com/content/5/1/44 — Preceding unsigned comment added by 24.43.213.194 (talk) 18:58, 4 December 2011 (UTC)

NYT resources[edit]

99.181.134.88 (talk) 08:28, 25 January 2012 (UTC)

I would not incorporate these reports into the current article, which minces no kind words for mercury. Many editors are subject to a well-intentioned urge to convert Wikipeida into a "save the planet" forum, but such ventures risk making Wikipedia a soapbox and detracting from its sober tone. Within WIkipedia, medical claims are subject to stringent standards, WP:MEDRS. News stories are not suitable, although again these are worthy causes.

Given density of Mercury is currently total nonsense! :-([edit]

Density of Mercury at its melting/freezing point (-38.8 °C) is here given wrongly! Wrong citation! Beginner foolish -- sorry!

-(

This is a well measured temperature-fixpoint. Look it up for references. Here is the correct data:


13.5336 g/cm^3  @ 25 °C
13.5459 g/cm^3  @  20 °C
13.595078 g/cm^3 @  0 °C  (high accurate, needed in definition of 1 Torr)

At freezing point the density is even higher, because the density expansition rate is nearly perfect linearly with temperature! This is the reason that high quality (accurate) glass-thermometers can easily made filled with mercury.

BTW: I have noticed that the scientific data quality of wikipedia goes sadly down since the last years, because taken old, wrong and dubious web-sources. — Preceding unsigned comment added by 129.70.14.237 (talk) 12:36, 25 January 2012 (UTC)

Thanks, corrected. It is much simpler than that - the value was taken from CRC Handbook for 25 °C and used for -38 °C, the weblink has nothing to do with that. Materialscientist (talk) 13:04, 25 January 2012 (UTC)

Bad Link[edit]

Bad :- Mercury (UK PID). 94.30.84.71 (talk) 14:07, 3 February 2012 (UTC)

Removed. -- Ed (Edgar181) 14:15, 3 February 2012 (UTC)

Mercury levels in lake sediment in Norway[edit]

The article quotes a Norwegian paper indicating that sediment mercury levels in some Norwegian lakes are of the order of 1mg/g. The article provides a link to the paper, which actually states that the levels are 1µg/g i.e. a factor of 1000 less. A simple error but worth noting nevertheless! — Preceding unsigned comment added by 143.239.200.79 (talk) 07:41, 27 March 2012 (UTC)

Thanks! Checked and corrected!--Stone (talk) 09:26, 27 March 2012 (UTC)

mercury element[edit]

Cinnabar-mercury sulfide, HgS is not toxic. It is the most stable element with a solubility of 10 to the -54. Check it out in Min Dat or Standards of Chemistry and Physics. Miners who worked, and drilled in mines where the cinnabar was not contaminated with elemental mercury had no problems other than that caused by inert dust particles. Where miners encountered liquid mercury in rocks, and drilled into it using compressed air drills, the mercury became airborn and caused extreme salivation. This happened in the mines of New Almaden on at least one occasion. The miners recovered fully after treatment. Please contact me for the proper references. Roberta Lamons Ph.D. New Almaden resident Robbielamons@yahoo.com — Preceding unsigned comment added by 98.248.59.161 (talk) 19:06, 24 April 2012 (UTC)

Move to mercury (metal)[edit]

This article was recently moved. I've moved it back for now because it's a well-established article - if we need to move it, we should discuss it here first. --Rifleman 82 (talk) 02:37, 7 September 2012 (UTC)

Millon's base- network cation[edit]

Millons base contains a network ion [Hg2N+], first structure form Lipscomb in 1950's, but I don't have access to that original paper at the moment. Greenwood describes the ions as containing tetrahedral N atoms linked to Hg, and each Hg linked to 2 N. The current description could be taken as implying that the [Hg2N+] were discrete. Axiosaurus (talk) 09:35, 19 December 2012 (UTC)

The link at the very beginning to some rock band needs to go[edit]

An article about a universal element does not need a link to a rock band nobody has ever heard of. There are enough rock bands in the world to drown non-band wikipedia articles with this type of link. How about a link to mercury the planet? That is a little bit more weighty than someone's garage band. 74.104.22.121 (talk) 21:19, 29 December 2012 (UTC)

This looks like somebody wants som advertising.--Stone (talk) 11:58, 30 December 2012 (UTC)
Removed. Since the page is disambiguated already (by "(element)"), there seems no need for a hatnote (by WP:DAB rule). -DePiep (talk) 12:12, 30 December 2012 (UTC)
I think you should put "This article is about the element. For the planet, see Mercury (planet). ". I also think you don't need to put back the "rock band" thing you removed. The "element Eighty thing is already disambiguated. "1YlGC6dsynvm (talk) 23:04, 17 February 2013 (UTC)

Hydragyrum is not the scientific name for mercury[edit]

This is an interesting and valid part of the article, but "hydragyrum" is not a scientific name for mercury. Hydragyrum is fully obsolete, and most scientists would not understand the element being referred to as "hydragyrum". The scientific name for mercury is mercury. Alarty (talk) 14:37, 9 January 2013 (UTC)

Fixed Bhny (talk) 15:18, 9 January 2013 (UTC)

Edit please[edit]

Want to make a change but for some strange reason access to the article is PERMANENTLY resticted (call this a Wiki? Don't make me laugh!). Please change "metric tons" to "tonnes" within the article. Thanks. 86.9.233.162 (talk) 23:16, 1 February 2013 (UTC)

They are the same thing. This article is indefinitely semi-protected due to persistent vandalism. Double sharp (talk) 11:20, 2 February 2013 (UTC)
I know they are the same thing but "metric tons" is an outdated term, so please change it. As for this article being indefinitely protected, I checked out the vandalism and it is sporadic. The article is not being targetted, which would be the only reason for permanent protection (e.g. an article about Obama), so I suggest this is reviewed. Vandalism is generally cleared up pretty quickly and protecting articles in this manner without very good reason flies in the face of what this encyclopedia is all about. Thanks. 86.9.233.162 (talk) 14:25, 2 February 2013 (UTC)

Update[edit]

I would like to edit Hg page to include the very recent result by Peter Schwerdtfeger that low melting point of Hg is relativistic effect. The reference to this work is Calvo, F., Pahl, E., Wormit, M., & Schwerdtfeger, P. (2013). Evidence for Low-Temperature Melting of Mercury owing to Relativity. Angewandte Chemie International Edition, n/a–n/a. doi:10.1002/anie.201302742 — Preceding unsigned comment added by Cacarden (talkcontribs) 19:37, 24 June 2013 (UTC)

Edit request on 6 August 2013[edit]

Please add {{About|the element|other uses|Mercury (disambiguation)}} to the top of the article. The same hatnote is already at Mercury (planet) and Mercury (mythology). 2001:18E8:2:1020:A5A9:6E82:BFCB:13A0 (talk) 12:38, 6 August 2013 (UTC) 2001:18E8:2:1020:A5A9:6E82:BFCB:13A0 (talk) 12:38, 6 August 2013 (UTC)

See WP:NAMB. Materialscientist (talk) 13:21, 6 August 2013 (UTC)

Density of Mercury[edit]

If you could please include the density of mercury in kg/m^3. It would be much appreciated. It's 13594 kg/m^3. Thank you — Preceding unsigned comment added by Mharuza (talkcontribs) 16:25, 26 October 2013 (UTC)

The infobox already gives it in g·cm−3, and I don't think it's that hard to convert (it's just a decimal point shift, after all) that we ought to give it kg·m−3 as well. Double sharp (talk) 06:24, 20 April 2014 (UTC)

Edit request, 29 November 2013[edit]

In fourth line of Physical properties section, please correct 'electronic configuration' to 'electron configuration' (i.e. configuration of electrons) - the use of the adjective 'electronic' here is a hypercorrection, and is simply poor grammar masquerading as good, we need the two nouns juxtaposed. Thanks! Connymenzel (talk) 15:46, 29 November 2013 (UTC)

Done. Thanks. --Stfg (talk) 22:17, 29 November 2013 (UTC)

mmHg[edit]

Hi guys,

I believe it is of essence that something about the pressure unit mmHg and its similarities is talked about in here. or at least linked to, for reference.

thanks. — Preceding unsigned comment added by 212.150.66.161 (talk) 06:46, 5 January 2014 (UTC)

  1. ^ http://californiawatch.org/watchblog/scientists-mercury-may-cause-homosexual-behavior-birds-7137