Chromium ( ) is a chemical element which has the symbol Cr and atomic number 24.

Chromium is remarkable for its magnetic properties: it is the only elemental solid which shows antiferromagnetic ordering at room temperature ( and below ).

Chromium isotopic ratios are homogeneous within the earth, therefore these isotopic anomalies exclude a volcanic origin which was also proposed as a cause for the iridium enrichment.

Chromium iron is a commonly used material, which gives an efficiency of about 1 % over a wide range of energies.

Chromium ( III ) sulfate dissolves to give the hexaaquachromium ( III ) cation, < sup > 3 +</ sup >, which at higher pH undergoes processes called olation to give polychromium ( III ) compounds that are active in tanning, being the cross-linking of the collagen subunits.

In acid solution the unstable blue peroxo complex Chromium ( VI ) oxide peroxide, CrO ( O < sub > 2 </ sub >)< sub > 2 </ sub >, is formed ; it is an uncharged covalent molecule which may be extracted into ether.

* Chromium trioxide, which reacts with water to form chromic acid.

During the popularity with Shizuo's music, David also started a band with Annika and Razi Barakat called Give Up ( Razi had earlier been featured on The Cramps cover song " New Kick " and is also known as Boy from Brazil, and Pharoah Chromium when performing as the lead singer of Golden showers and the Assassinations ), but the band later broke up after the 1997 DHR tour due to a serious disagreement with creative differences, which led to David attacking Razi half way through their set.

Chromium ( IV )- doped YAG ( Cr: YAG ) provides a large absorption cross section in the 0. 9-1. 2 micrometer spectral region, which makes it an attractive choice as a passive Q-switch for Nd-doped lasers.

Chromium was not discovered until 1935, but the Philippines in 1939 produced 164, 000 tonnes and had fifth place, or 11 %, of world production.

Chromium has no verified biological role and has been classified as not essential for mammals.

* National Institute for Occupational Safety and Health – Chromium Page

A beta version of this plugin is also available for Google Chrome and Chromium.

* Chromium required for sugar metabolism

Other solutions support parallel OpenGL programs for Virtual Reality, scalability or graphics clusters usage, either transparently like Chromium or through a programming interface like Equalizer.

Chromium dioxide ( referred to as CrO < sub > 2 </ sub > or Type II ) was the first tape designed for extended high frequency response, but it required different bias and equalization settings.

The open source software package Chromium ( http :// chromium. sourceforge. net ) provides a parallel rendering mechanism for existing applications.

Chromium | Chrome-cobalt disc with Bridge ( dentistry ) | bridges and crowns for dental implants manufactured using WorkNC Dental CAD / CAM

* A branch of Das U-Boot used by Google for Chromium OS

The town was not notified until three days after the release of the Hexavalant Chromium and the accident sparked a major public controversy, with Orica criticised for playing down the extent and possible risks of the leak, and NSW state environment minister Robyn Parker and her department attacked for their slow response to the incident.

There is currently no drinking water limit established by the EPA specifically for Chromium VI.

The 0. 58 ppm Chromium VI in the groundwater in Hinkley exceeded the Maximum Contaminant Level ( MCL ) of 0. 10 ppm for total Chromium currently set by the United States Environmental Protection Agency ( EPA ).

Note that since no MCL exists for Chromium VI the total Chromium standards apply.

* National Institute for Occupational Safety and Health-Hexavalent Chromium

• Cadmium, Mercury, Lead & Hexavalent Chromium ( beyond RoHS ) – including requirements for Mercury free products.

Frimy and Auguste Verneuil manufactured artificial ruby by fusing BaF < sub > 2 </ sub > and Al < sub > 2 </ sub > O < sub > 3 </ sub > with a little Chromium at red heat.

Chromium ( III ) sulfate (< sub > 2 </ sub >( SO < sub > 4 </ sub >)< sub > 3 </ sub >) has long been regarded as the most efficient and effective tanning agent.

* Chromium trioxide, CrO < sub > 3 </ sub >

* Marvel vs Wildstorms Chromium character cards-8 character cards, being 5 new ( Black King, Brass, Crystal, Team X and Wynonna Earp ) and 3 variant characters, randomly inserted in packs of Marvel vs Wildstorms Trading Cards, released Summer 1997, at the rate of 1 per 7 packs.

* Chromium ( III ) oxide, Cr < sub > 2 </ sub > O < sub > 3 </ sub >

* Chromium trioxide ( chromium ( VI ) oxide ), CrO < sub > 3 </ sub >

< td align =" center "> Chromium III ( Cr < sup > 3 +</ sup >)</ td >

Chromium analysis gave 58.8% Cr as compared with 61.2% theory.

Chromium oxide was used by the Chinese in the Qin dynasty over 2, 000 years ago to coat weapons such as bronze crossbow bolts and steel swords found at the Terracotta Army.

Chromium was regarded with great interest because of its high corrosion resistance and hardness.

Chromium and ferrochromium are produced from the single commercially viable ore, chromite, by silicothermic or aluminothermic reaction or by roasting and leaching processes.

Chromium metal left standing in air is passivated by oxygen, forming a thin protective oxide surface layer.

Chromium metal treated in this way readily dissolves in weak acids.

Chromium, unlike metals such as iron and nickel, does not suffer from hydrogen embrittlement.

Chromium is the 24th most abundant element in Earth's crust with an average concentration of 100 ppm.

Chromium compounds are found in the environment, due to erosion of chromium-containing rocks and can be distributed by volcanic eruptions.

Chromium is mined as chromite ( FeCr < sub > 2 </ sub > O < sub > 4 </ sub >) ore. About two-fifths of the chromite ores and concentrates in the world are produced in South Africa, while Kazakhstan, India, Russia, and Turkey are also substantial producers.

Chromium isotopic contents are typically combined with manganese isotopic contents and have found application in isotope geology.

Chromium deficiency is controversial or is at least extremely rare.

Chromium salts ( chromates ) are also the cause of allergic reactions in some people.

* ATSDR Case Studies in Environmental Medicine: Chromium Toxicity U. S. Department of Health and Human Services

Stainless steel is defined as a regular steel alloy with greater than 10 % by weight alloying content of Chromium.

Chromium salts can also be used to impart moderate anti-stick properties.