MERCURY





Mercury 3292
Photo by: José M. Domínguez

Mercury

Overview

Mercury is a transition metal. A transition metal is one of the elements found between Groups 2 (IIA) and 13 (IIIA) on the periodic table. The periodic table is a chart that shows how chemical elements are related to one another. Mercury has long been known as quicksilver, because it is a silver liquid. The chemical symbol also reflects this property. The symbol, Hg, comes from the Latin term hydrargyrum, meaning "watery silver."

Mercury has been known for thousands of years. In many cultures, people learned to make mercury metal from its most important ore, cinnabar. When heated cinnabar releases mercury as a vapor (gas). The vapor is cooled and captured as liquid mercury.

SYMBOL
Hg

ATOMIC NUMBER
80

ATOMIC MASS
200.59

FAMILY
Group 12 (IIB)
Transition metal

PRONUNCIATION
MER-kyuh-ree

Some mercury compounds are known to be poisonous. For example, mercuric chloride (corrosive sublimate) was often used to kill pests and, sometimes, people. On the other hand, some mercury compounds have been used as medicines. For instance, mercurous chloride (calomel) was long used as a cure for skin rashes. In the last forty years, the dangers of mercury have become better known. As a result, mercury use is now being phased out.

Discovery and naming

The oldest sample of mercury dates to about the fifteenth or sixteen century B.C. It was found in an Egyptian tomb at Kurna, stored in a small glass container.

Mercury and cinnabar are both mentioned in ancient manuscripts. The Chinese, Hindus, Egyptians, Greeks, and Romans all recorded information about the element and its ore. Greek philosopher Theophrastus (372-287 B.C. ), for example, described a method for preparing mercury. Cinnabar was rubbed together with vinegar in a clay dish. Theophrastus wrote that the cinnabar had been found in silver mines. When the metal was first made, he said, people thought it might contain gold. They were misled by the metal's shiny appearance. They soon realized, however, that it was quite different from gold.

Many reports on mercury told of its poisonous effects. Slaves who worked in Roman mercury mines, for example, often died of exposure to mercury. Strangely enough, trees and plants around these mines were not affected. Mercury was sometimes very dangerous and sometimes quite safe. People even drank from streams that ran through mercury mines. Scientists now know that mercury's effects depend on the form in which it occurs.

Mercury amalgams have also been around for a long time. An amalgam is a combination of mercury with at least one other metal. Amalgams are formed when a metal, such as silver, dissolves in mercury. The process is similar to dissolving salt in water. Amalgamation is used in mining to remove silver from ore. The silver dissolves in the mercury and a silver amalgam is formed. Heating the amalgam releases the silver. This method was used by miners as early as the sixteenth century.

Physical properties

Mercury is the only liquid metal. In fact, there is only one other liquid element, bromine. Bromine is a non-metal. Mercury can be frozen (changed into a solid) at a temperature of –38.85°C (–37.93°F). It can be changed into a gas ("boiled") at 365.6°C (690.1°F). Its density is 13.59 grams per cubic centimeter.

Mercury has two physical properties of special interest. First, it has very high surface tension. Surface tension is a property of liquids that make them act like they are covered with a skin.

Droplets of mercury, the only liquid metal.
Droplets of mercury, the only liquid metal.

For example, some water bugs are able to walk on the surface of water. With care, one can float a needle on the surface of water. These incidents are possible because of water's surface tension.

Mercury is also a very good conductor of electricity. This property is used in a number of practical devices. One such device is a mercury switch, such as the kind that turns lights on and off. A small amount of mercury can be placed into a tiny glass capsule. The capsule can be made to tip back and forth. As it tips, the mercury flows from one end to the other. At one end of the capsule, the mercury may allow an electric current to flow through a circuit. At the other end, no mercury is present, so no current can flow. Mercury switches are easy to make and very efficient.

Chemical properties

Mercury is moderately active. It does not react with oxygen in the air very readily. It reacts with some acids when they are hot, but not with most cold acids.

Occurrence in nature

The abundance of mercury in the Earth's crust is estimated to be about 0.5 parts per million. That makes it one of the 20 least common elements. It very rarely occurs as an element. Instead, it is usually found as a compound. Its most common ore is cinnabar, or mercuric sulfide (HgS). Cinnabar usually occurs as a dark red powder. It is often called by the common name of vermillion or Chinese vermillion.

The largest producer of mercury outside the United States is Spain. U.S. production numbers are not announced in order to protect U.S. industries from revealing important company secrets. Other producers after Spain are Kyrgyzstan, Algeria, China, and Finland.

In the United States, mercury is produced as a by-product of gold mining. It comes from eight gold mines in California, Nevada, and Utah.

Isotopes

Seven naturally occurring isotopes of mercury are known. They are mercury-196, mercury-198, mercury-199, mercury-200, mercury-201, mercury-202, and mercury-204. Isotopes are two or more forms of an element. Isotopes differ from each other according to their mass number. The number written to the right of the element's name is the mass number. The mass number represents the number of protons plus neutrons in the nucleus of an atom of the element. The number of protons determines the element, but the number of neutrons in the atom of any one element can vary. Each variation is an isotope.

Mercury is the only liquid metal.

About a dozen radioactive isotopes of mercury are known also. A radioactive isotope is one that breaks apart and gives off some form of radiation. Radioactive isotopes are produced when very small particles are fired at atoms. These particles stick in the atoms and make them radioactive.

Two radioactive isotopes of mercury are used in medicine, mercury-197 and mercury-203. Both isotopes are used to study the brain and the kidneys. The isotopes are injected into the body where they travel to the brain and the kidneys. Inside these two organs, the isotopes give off radiation that is detected by instruments held above the body. The pattern of radiation provides information about how well the brain and kidneys are functioning.

Extraction

Mercury is still prepared as it was hundreds of years ago. Cinnabar is heated in air. The compound breaks down to give mercury metal:

The mercury metal is then purified by distillation. Distillation is the process of heating two or more liquids to their boiling points. Different liquids boil at different temperatures. The liquid that is wanted (such as mercury) can be collected at its boiling point. Mercury that is more than 99 percent pure can be collected by distillation.

Uses

The most important use of mercury is in the preparation of chlorine. Chlorine is produced by passing an electric current through sodium chloride:

There is a problem with using this method, however. Sodium (Na) is a very reactive metal. If any water is present, the sodium will react violently with the water. This reaction makes the production of chlorine much more difficult.

In 1892, two English chemists developed a method for solving this problem. They made a container with a layer of mercury on the bottom. As sodium is produced by the electric current, it dissolves in the mercury, forming an amalgam. The sodium is unable to react with water. For many years, the "mercury cell"

With fluorescent lights, when an electric current passes through mercury vapors, the resulting invisible radiation strikes phosphors. This creates visible light.
With fluorescent lights, when an electric current passes through mercury vapors, the resulting invisible radiation strikes phosphors. This creates visible light.
invented in 1892 was a very popular method for producing chlorine.

But today, companies are looking for other ways to make chlorine. They are worried about the harmful effects of mercury. They are also concerned that mercury can get into the environment and harm humans, animals, and plants.

The second most important use of mercury in the United States is in switches and other electrical applications. Again, there are increasing concerns about the health effects of mercury. Many companies are switching to electronic switches.

One application in which concerns about mercury have had little effect is fluorescent lamps. A fluorescent lamp contains mercury vapor (gas). When the lamp is turned on, an electric current passes through the mercury vapor, causing it to give off invisible radiation. The radiation strikes the inside of the glass tube, whose walls are coated with a phosphor. A phosphor is a material that gives off visible light when struck by electrons. The tube glows as the radiation strikes the phosphor.

Lamp manufacturers have reduced the amount of mercury in fluorescent lamps by about 60 percent. They developed ways to make the Lamps work just as well with less mercury. However, mercury lamps are much more popular. Each lamp now contains much less mercury. But there are many more lamps than ever before.

For a time, mercury batteries were quite popular. In the early 1980s, more than 1,000 tons of mercury a year were used to make mercury batteries. These batteries are a special environmental problem, however. People tend to just throw them away when they no longer work. The cases split open easily, releasing mercury into the environment. As a result, much less mercury is now being used to make such batteries. In 1996, less than one ton of mercury was used in these batteries. They are now restricted almost entirely to military and medical uses.

Mercury is also used in dental applications, measuring instruments (such as mercury thermometers and barometers), and coatings for mirrors.

Compounds

Mercury compound use is also decreasing because of health concerns. A few of the compounds still in use follow. Notice that two different endings are used for mercury compounds. Those that end in -ous have less mercury than those that end in -ic.

mercuric arsenate (HgHAsO 4 ): waterproofing paints

mercuric benzoate (Hg(C 7 G 5 O 2 ) 2 ): medicine; used to treat syphilis

mercuric chloride, or mercury bichloride, or corrosive sublimate (HgCl 2 ): disinfectant, tanning of leather, spray for potato seedlings (to protect from disease), insecticide, preservation of wood, embalming fluid, textile printing, and engraving

mercuric cyanide (Hg(CN) 2 ): germicidal soaps (soaps that kill germs), photography

mercuric oxide (HgO): red or yellow pigment in paints, disinfectant, fungicide (to kill fungi), perfumes and cosmetics

mercuric sulfide (HgS): red or black pigment in paints

mercurous chloride, or calomel (Hg 2 Cl 2 ): fungicide, maggot control in agriculture, fireworks

mercurous chromate (Hg 2 CrO 4 ): green pigment in paints

mercurous iodide (Hg 2 I 2 ): kills bacteria on the skin

The tragic effects of mercury poisoning

I n a tragic irony, a scientist who was helping to improve the environment died as a result of her efforts. On June 8, 1997, Dartmouth College chemistry professor Karen Wetterhahn died of mercury poisoning. Less than a year earlier, she had been experimenting with dimethyl mercury when she spilled a tiny amount on her hands. Dimethyl mercury is one of the most toxic of mercury compounds.

Wetterhahn was studying the effects that heavy metals (mercury, chromium, lead, and arsenic) have on living things. She was concerned about how these elements pollute the environment and cause disease in people.

In August 1996, as Wetterhahn was transferring some dimethyl mercury to a tube, the accident occurred. She was wearing latex gloves, but they were not adequate protection against the dangerous chemical. The mercury seeped into her skin. Wetterhahn did not begin to feel the effects of the exposure until six months later. She then started losing her balance, slurring her speech, and suffering vision and hearing loss. Tests showed her system had eighty times the lethal dose of mercury. Wetterhahn died of mercury poisoning on June 8, 1997.

Wetterhahn's death prompted some safety changes. Bright stickers on latex glove boxes should warn against using the gloves with hazardous chemicals. Workshops were held to teach proper glove selection. The dangers of dimethyl mercury were stressed. And scientists were urged to use a less dangerous chemical than dimethyl mercury. Overall, her death heightened awareness in the scientific community of potential laboratory dangers.

Health effects

Mercury metal and most compounds of mercury are highly toxic. Interestingly enough, scientists have become aware of this fact only quite recently. The toxicity of some mercury compounds has been known for many centuries. One form of mercury chloride known as calomel, for example, was sometimes used as a poison to kill people. It was also once used extensively to kill fungi and control maggots in agricultural crops.

But even as recently as fifty years ago, there was relatively little concern about mercury metal and many mercury compounds. High school chemistry students often played with tiny droplets of mercury in the laboratory. They used mercury to coat pennies and other pieces of metal.

Mercury was also widely used in dentistry. It was used to make amalgams, alloys of mercury with other metals, used to fill teeth. Most people even today are likely to have dental fillings that contain a small amount of mercury metal.

In the last fifty years, chemists have learned a great deal more about the toxic effects of both mercury metal and most of its compounds. They now know that mercury itself enters the body very easily. Its vapors pass through the skin into the blood stream. Its vapors can also be inhaled. And, of course, it can also be swallowed. In any of these cases, mercury gets into blood and then into cells. There it interferes with essential chemical reactions and can cause illness and death.

Sometimes, these effects occur over very long periods of time. People who work with mercury, for example, may take in small amounts of mercury over months or years. Health problems develop very slowly. These problems can include inflammation of the mouth and gums; loosening of the teeth; damage to the kidneys and muscles; shaking of the arms and legs; and depression, nervousness, and personality changes.

"Mad as a hatter!"

B ack in the 1800s, most of the negative effects of mercury and its compounds were not yet known. Hatmakers of that time commonly used a mercury compound in their craft. It was used to treat the felt and beaver fur that lined the hats. Eventually, exposure to the mercury began to cause changes in the hatmakers' bodies. Their personalities and behavior became erratic. Recognizing the bizarre personalities of many hatmakers, people often used the expression "mad as a hatter." In fact, author Lewis Carroll (1832-98) created a character for Alice's Adventures in Wonderland that owes its origins to the symptoms of mercury poisoning: The Mad Hatter.

People can also be exposed to large doses of mercury over short periods of time. In such cases, even more serious health problems can arise. These include nausea, vomiting diarrhea, stomach pain, damage to the kidneys, and death in only a week or so.

So is mercury still safe to use in dental fillings? That question is the source of considerable controversy. Some people say that so little mercury is lost from fillings that the metal presents no danger to people. Other people think that dentists should take no chances with this dangerous metal. They should stop using mercury fillings entirely.



User Contributions:

tena
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Sep 13, 2007 @ 6:06 am
WOW
I trueley enjoyed reading about mercury at your site. I can,t say that about the other 50 sites i have visited.
Thank you
amitava
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Mar 10, 2008 @ 7:07 am
I really liked the article, very accurate and interesting account.
ah hi
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Mar 19, 2008 @ 1:01 am
thank you this had alot of useful information and has enough information.
susie
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Jun 8, 2008 @ 8:20 pm
this is a great site! learned alot!!!!!!!!!!!!! =D
rudhrabathi
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Jun 12, 2008 @ 9:09 am
i know about mercury secrets by this site. it is very usefull information to the people those who use mercury.
thank u
Artie
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Jul 13, 2008 @ 9:21 pm
I was one of those that played with Hg in high school. But we coated dimes (90% silver)and not pennies. The copper wouldn't amalmagate with the Hg.
Hetty
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Oct 11, 2008 @ 7:19 pm
Wow! this was the best site i've been to for info about mercury
I used a lot of this info for my project at school and truly enjoyed it. It's the best one so far!
Thanks soo much!
Ashley
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Oct 13, 2008 @ 3:15 pm
This site is great!
I got so much information for my science project about mercury.
They need to come up with some more sites likes this.
It's awesome!
:)
Jacob
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Nov 17, 2008 @ 9:09 am
This was very helpful, i learned alot, and i now can start my Powerpoint! Thanks a bunch!
matt
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Aug 13, 2009 @ 9:21 pm
its helpful but needs a colour coded nucleus for mercury
Jacy
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Oct 22, 2009 @ 7:19 pm
Im doing a project and thiawsenred all ogf my questions i appreciate it thanx~~^_^
Nicole Pickowicz
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Oct 29, 2009 @ 12:12 pm
i think there should be some more information like weather th element is reactive with metals, and weather the element is reactive with nonmetals. that would give people more information about this element. thank you for the information you gave me already but i would much rather have a little bit more about it beacause i am doing a project and i need those typs of things to finish, thank you, nicole
Jane
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Nov 1, 2009 @ 8:20 pm
WOW! this is the first of like 392489038490 sites about mecury ive visited that actually helps me, and i enjoyed it! WOW!
Megan
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Nov 2, 2009 @ 7:19 pm
Wow. This is such a great report. It truly helped me with my poster in Chemistry. Thank you SO much :D
ilyssa
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Nov 3, 2009 @ 4:16 pm
this site helped me with my science project.
and its very helpful with my hw
Libby
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Nov 27, 2009 @ 9:09 am
It was like you knew exactly what students needed to know about Mercury and put it all neatly on one site!
pink98
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Dec 8, 2009 @ 6:18 pm
wow i need to see the image of how many protons please some one please pleasy please some one help me.
frank
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Dec 29, 2009 @ 6:18 pm
great site answered all my questions

i think they need to work on there html encoding though im typing this comment on top of other peoples comments
Kolby
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Jan 10, 2010 @ 10:10 am
This site really helped me. My project is now complete thanks to your website becuase all the info is here! Thanks!
Rani
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Jan 30, 2010 @ 2:02 am
Thank you to the creator of this site, it's really been a helpful resource for me in my first Science project of the year. It really deserves a cheer, and I'll be using it from now on.

Rani
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Feb 7, 2010 @ 2:14 pm
Thank for this imformation. It helped me with my project!!:]]
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Feb 10, 2010 @ 10:22 pm
:) this really helped me alot it gave me sooo much information and i searched so many other sites but none of them helped..thank you
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Feb 22, 2010 @ 9:21 pm
awesome i enjoyed this cite i'm working on a report thanks
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Mar 5, 2010 @ 5:17 pm
this site helped me extreamly on my phsical science project on mercury.. thanks!
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Jun 2, 2010 @ 9:21 pm
This needs to be updated. Copernicium also appears as a liquid at room temperature as well as Mercury and Bromine.
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Sep 24, 2010 @ 2:02 am
i really like this site and it helps me alot in my assignment
Nosepick
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Sep 27, 2010 @ 10:10 am
i was very impressed with this website and i would enjoy if you contacted me on my email address so we ciould discuss the information on more advanced levels.
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No one
Kyle
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Sep 28, 2010 @ 8:20 pm
Thank you so much for all this very useful info. I have to do a school project on mercury and your site had EVEYTHING I needed for it. You have everything there is to know about mercury. Do not worry, i wont plagerize any of your information, I just need some info i can wrk with for my project! thanks!
Harry Man
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Oct 4, 2010 @ 9:21 pm
Really good site, lots of interesting information! Thanks so much!
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Oct 7, 2010 @ 7:19 pm
I am curious how Mercury Iodide reacts to radiation and photons? I understand it has a large absorption. Does that mean it soaks up radiation or does it act like a reflector? I have read differing suggestions. I know it is a radiation detector.
eric
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Oct 12, 2010 @ 8:20 pm
thank you so much im probley gonna get a A- thank you alot i need it
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Oct 25, 2010 @ 11:11 am
wow i have never been so interrested in elments befor this is realy a good website thank you for helping us all to learn more about science.
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Nov 8, 2010 @ 12:00 am
how i know to mercury?
what kind of mercury is in the world?
how much is mercurys in price of the world
madi
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Nov 27, 2010 @ 3:15 pm
I very much enjoyed this inriching article on the study of Mercury and I will have futher enjoyment for many other articles in the future.

Thank you
billlybobjoe
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Dec 2, 2010 @ 9:09 am
hello people of earth i need price ranges for mercury. thank you and goodbye!
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Dec 22, 2010 @ 10:10 am
Am pleased by the way the effects of Hg are analyzed and so far I can't hesitate to send endless thanks to your good and educative work.Keep it up.
Am john from Kenya
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Feb 2, 2011 @ 11:11 am
WOW! i had a poster about the element mercury and i had to do 750 words. i visited lots of sites but i couldn't get a lot of info then i saw your site and read all of it. the site really helped with my poster. i just want to thank you because you made this site.
THANK YOU A TON!!
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Feb 17, 2011 @ 9:09 am
great site guys and gals i like it! i tell you what this is just one good site i think you did a great job!
David Nguyen
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Feb 19, 2011 @ 10:22 pm
nice guys tis sight helped me with everything I needed about mercury all the other sites r bad >.<
Thankyou^^
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Feb 19, 2011 @ 10:22 pm
This is the best sight ever i had to do a test tomorow and tis sight was awesoome thankyou.

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Melissa
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Feb 27, 2011 @ 9:09 am
This is a fantastic website. I got lots of information from it thank you:)
minette
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Mar 14, 2011 @ 3:03 am
very useful with lots of relevant info :)
really good site. recomend it for every one
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Mar 15, 2011 @ 9:09 am
thankyou for all this wonderful infomation, this has helped me alot with my school project...
i have learnt alot about mercury, i vistited lot of sites and this is the best one, by far (;
thankyou once again.
xox
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Apr 1, 2011 @ 11:23 pm
great info.it helped me a lot in answering my question. i think i might surprise my lecturer with this piece of information,,, university of guyana. chem major
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May 5, 2011 @ 7:07 am
im looking for some mercury to buy in red color or black or green or white colors and silverif u can help pls contact me at compmajdi@hotmail.ca thank you
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May 31, 2011 @ 2:14 pm
information very interesting and useful in the writing of the thesis, however, the disadvantage is the lack of the article references to the literature where the theory is taken from
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Jun 1, 2011 @ 3:03 am
Is red liquid mercury dangerous.

where can someone get mercury to purchase and is their a global regulation on red and white mercury,

please respond its urgent to me decision
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Jun 15, 2011 @ 2:14 pm
can hg b converted into solid form at rum temp?
i can do it possible
reply me if u can. thanks
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Jun 22, 2011 @ 3:15 pm
BY MISTAKE I READ THIS SITE I WANTED TO READ ABOUT SILVER. BUT THIS SITE REALLY INCREASED MY KNOWLEDGE,MANY MANY THANKS ,GOD BLESS YOU.
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Sep 29, 2011 @ 3:15 pm
Thanks this was alot of help for my science project!!
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Oct 5, 2011 @ 5:17 pm
YOU HAVE DONE JUSTICE TO THE TOPIC CLEARLY AND DEVOID OF AMBIGUITY.HOW DO I FIND CINNABAR PROCESSED INTO LIQUID FORM,I NEED IT FOR MY RESEARCH WORK KINDLY ASSIST ME
crisha
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Oct 7, 2011 @ 9:21 pm
YOUR SITE HELPED ME A LOT IN MY CHEMISTRY ASSIGNMENT. LOVE READING IT,, I GET A LOT OF INFORMATION. DOMO ARIGATO...
Symone
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Oct 20, 2011 @ 7:19 pm
thank you so much. this site just made the creation of my mercury powerpoint presentation much more easier.
Binod
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Nov 1, 2011 @ 10:22 pm
I like this site because it is much accurate and free from other rubbish information. It helped me to write report on elements.
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Nov 7, 2011 @ 11:11 am
Please take information about Chemical propaties of red Hydrargyrum.
abbie
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Nov 26, 2011 @ 12:12 pm
awesome site... answered all but one: who was the first producer of mercury and mercury users?

thamks
doingaproject
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Nov 28, 2011 @ 3:15 pm
thanks for the information, im doing a project and this helped a lot
Marie
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Dec 1, 2011 @ 3:15 pm
Thank you so much this site just help me about my science project
Briana
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Dec 7, 2011 @ 5:17 pm
THIS WEBSITE HELPED ME SO MUCH WITH MY PROJECT! EVERYTHING I NEEDED, THE WEBSITE HAD! THANK YOU SO MUCH(:
lance alvares
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Dec 8, 2011 @ 5:17 pm
thanks guys,helped me alot, i had a project and yours is the only one that actually helped me out.THANKS
m.AMMAr
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Jan 9, 2012 @ 11:23 pm
i want to make meercury in home.How is possibel,what is the formula?
heidar
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Jan 21, 2012 @ 4:04 am
Please give me information about the mercury density at different temperature .
Thank you so much .
Obama
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Jan 29, 2012 @ 5:17 pm
Thanks this helped me make some very important desinions
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Feb 25, 2012 @ 5:17 pm
Kool site very helpful..cher chers!2012 f.o.n science very hard..
B-)
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Mar 19, 2012 @ 8:08 am
very useful information. i am doing a school project on mercury and this website really helped me a lot. very helpful
david
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May 11, 2012 @ 12:00 am
this was a very awsome site it really helped me on my school project :)
THANK YOU !!!
kelly
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May 15, 2012 @ 8:08 am
this is a great website it needs more information about the chemical properties
Adebimpe adedapo
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Jul 16, 2012 @ 9:09 am
Do u think mercury can be used in printing money nd is their another cololur of mercury like reddish in colour
habib
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Sep 14, 2012 @ 8:08 am
THx helped in my assingment =) and learnt so much things.
JESSI M
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Sep 19, 2012 @ 10:10 am
Sweet! But i need to know what qualities make mercury useful, everything else was amazing and amazingly organized!
lara
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Sep 25, 2012 @ 2:14 pm
So Cool! I got all the help I needed for school!!!
KISKISKIS
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Oct 16, 2012 @ 12:00 am
It is really helpful for my science essay
THANKS
odin
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Oct 23, 2012 @ 2:14 pm
This was a great read and I learned a lot I hope others can use this for a paper thats needs to be terned in.
Raymond
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Oct 29, 2012 @ 5:17 pm
This was very helpful. I needed help form my physical science class and got a great deal of help from this website. Good job, and thanks.
Violet
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Nov 4, 2012 @ 3:15 pm
Thank you so so much! I had to do a science project on Mercury and I got almost ALL the information!
Alaysia
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Nov 26, 2012 @ 5:17 pm
Im In The 8th Grade And I Had A Test On The Periodihe Element Mercury To Study. This Website Was Very Helpful Towards My Test. I Past My Test With A 98% Average. Great Job , And Thank Youu( :
semisi ''vaea'' siu
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Jan 7, 2013 @ 6:18 pm
thank this website for all this info it's given me. this information was so helpful.
Christiaan
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Jan 20, 2013 @ 11:11 am
This is the best website about mercury i could find. It is amazing how this website manages to cover all topics.Thank you !!
Linds
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Feb 19, 2013 @ 7:19 pm
This was SUCH a great website!! It helped tremendously!! I may not just be looking right, but the only thing that frusterated me was trying to cite the website. How do I find the author of this article? Please, help? I NEED this information for my presentation!!!
Pradeep
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May 8, 2013 @ 1:01 am
How mercury can be made heat resistant even on 1100 degree centrigrade temperature
prettyprincess>3
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Jun 17, 2013 @ 6:18 pm
WOW! so cool!!
this info really helped me with my assignment on the element Mercury!! thank you so much!!:)
crazyboy
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Oct 13, 2013 @ 6:18 pm
this site help me do my late homework thanks a lot
bitch
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Dec 8, 2013 @ 1:13 pm
this is a great (lie) website go to meat cart for a better website
peter
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Dec 18, 2013 @ 2:14 pm
Great to know about the uses of mercury from this site.thank you
sd.pillai
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Jun 1, 2014 @ 2:02 am
its awesome,I need a help from u .can u suggest me a proper method to foil glass stones with silver liquid mercury.waiting for your advice
Rhazthul
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Jun 21, 2014 @ 12:12 pm
Should have read the comments earlier. All the information I needed for my project/poster are all here. And it's made to be very interesting. not just plain borring facts. Thank you!

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