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Chromium Circle

High Purity Cr Circles
CAS 7440-47-3


Product Product Code Request Quote
(2N) 99% Chromium Circle CR-M-02-CRCL Request Quote
(3N) 99.9% Chromium Circle CR-M-03-CRCL Request Quote
(4N) 99.99% Chromium Circle CR-M-04-CRCL Request Quote
(5N) 99.999% Chromium Circle CR-M-05-CRCL Request Quote

CHEMICAL
IDENTIFIER
Formula CAS No. PubChem SID PubChem CID MDL No. EC No Beilstein
Re. No.
SMILES
Identifier
InChI
Identifier
InChI
Key
Cr 7440-47-3 24863343 23976 MFCD00010944 231-157-5 N/A [Cr] InChI=1S/Cr VYZAMTAEIAYCRO-UHFFFAOYSA-N

PROPERTIES Mol. Wt. Appearance Density Tensile Strength Melting Point Boiling Point Thermal Conductivity Electrical Resistivity Eletronegativity Specific Heat Heat of Vaporization Heat of Fusion MSDS
52.00 Silvery 7.18 gm/cc N/A 1857°C 2672°C 0.939 W/cm/K @ 298.2 K 12.9 microhm-cm @ 0°C 1.6 Paulings 0.107 Cal/g/K @ 25°C 72.97 K-cal/gm atom at 2672°C 3.66 Cal/gm mole Safety Data Sheet

American Elements specializes in producing high purity Chromium Circles with the highest possible densityHigh Purity (99.99%) Metallic Circleand smallest possible average grain sizes for use in semiconductor, chemical vapor deposition (CVD) and physical vapor deposition (PVD) display and optical applications. Our standard Circle sizes range from 1" to 8" in diameter and from 2mm to 1/2" thick. We can also provide Circles outside this range. Materials are produced using crystallization, solid state and other ultra high purification processes such as sublimation. American Elements specializes in producing custom compositions for commercial and research applications and for new proprietary technologies. American Elements also casts any of the rare earth metals and most other advanced materials into rod, bar or plate form, as well as other machined shapes and through other processes such as nanoparticles and in the form of solutions and organometallics. American Elements produces to many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia) and follows applicable ASTM testing standards. Typical and custom packaging is available. See safety data and research below and pricing/lead time above. We also produce Chromium as rod, pellets, powder, pieces, granules, ingot, wire, and in compound forms, such as oxide. Other shapes are available by request.

Chromium (Cr) atomic and molecular weight, atomic number and elemental symbolChromium (atomic symbol: Cr, atomic number: 24) is a Block D, Group 6, Period 4 element with an atomic weight of 51.9961. Chromium Bohr ModelThe number of electrons in each of Chromium's shells is 2, 8, 13, 1 and its electron configuration is [Ar] 3d5 4s1. Chromium was first discovered by Louis Nicolas Vauquelin in 1797. It was first isolated in 1798, also by Louis Nicolas Vauquelin. The chromium atom has a radius of 128 pm and a Van der Waals radius of 189 pm. In its elemental form, chromium has a lustrous steel-gray appearance. Elemental ChromiumChromium is the hardest metal element in the periodic table and the only element that exhibits antiferromagnetic ordering at room temperature, above which it tranforms into a paramagnetic solid. The most common source of chromium is chromite ore (FeCr2O4). Due to its various colorful compounds, Chromium was named after the Greek word 'chroma' meaning color. For more information on chromium, including properties, safety data, research, and American Elements' catalog of chromium products, visit the Chromium element page.


HEALTH, SAFETY & TRANSPORTATION INFORMATION
Warning
H400
N/A
N/A
N/A
GB4200000
N/A
3
Environment-Hazardous to the aquatic environment        

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Chromium Oxide Chromium Wire Chromium Sputtering Target Aluminum Chromium Alloy Chromium Powder
Show Me MORE Forms of Chromium

PACKAGING SPECIFICATIONS FOR BULK & RESEARCH QUANTITIES
Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Shipping documentation includes a Certificate of Analysis and Material Safety Data Sheet (MSDS). Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes.


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Recent Research & Development for Chromium

  • Toxicology of wear particles of cobalt-chromium alloy metal-on-metal hip implants Part I: Physicochemical properties in patient and simulator studies. Madl AK, Liong M, Kovochich M, Finley BL, Paustenbach DJ, Oberdörster G. Nanomedicine. 2015 Mar 3.
  • Erratum to: Use of a whole-cell bioreporter, Acinetobacter baylyi, to estimate the genotoxicity and bioavailability of chromium(VI)-contaminated soils. Jiang B, Zhu D, Song Y, Zhang D, Liu Z, Zhang X, Huang WE, Li G. Biotechnol Lett. 2015 Mar 1.
  • Hexavalent chromium reduction and energy recovery by using dual-chambered microbial fuel cell. Gangadharan P, Nambi IM. Water Sci Technol. 2015
  • Magnetic moments of chromium-doped gold clusters: the anderson impurity model in finite systems. Hirsch K, Zamudio-Bayer V, Langenberg A, Niemeyer M, Langbehn B, Möller T, Terasaki A, Issendorff BV, Lau JT. Phys Rev Lett. 2015 Feb 27
  • Simultaneous analysis of Cr(III), Cr(VI) and chromium picolinate in foods using capillary electrophoresis-inductively coupled plasma mass spectrometry. Chen Y, Chen J, Xi Z, Yang G, Wu Z, Li J, Fu F. Electrophoresis. 2015 Mar 9.
  • Gibberellic acid in combination with pressmud enhances the growth of sunflower and stabilizes chromium(VI)-contaminated soil. Saleem M, Asghar HN, Khan MY, Zahir ZA. Environ Sci Pollut Res Int. 2015 Mar 7.
  • Fulvic acid mediates chromium (Cr) tolerance in wheat (Triticum aestivum L.) through lowering of Cr uptake and improved antioxidant defense system. Ali S, Bharwana SA, Rizwan M, Farid M, Kanwal S, Ali Q, Ibrahim M, Gill RA, Khan MD. Environ Sci Pollut Res Int. 2015 Mar 7.
  • Removal of hexavalent chromium from aqueous solutions using micro zero-valent iron supported by bentonite layer. Daoud W, Ebadi T, Fahimifar A. Water Sci Technol. 2015 Mar
  • Chromium translocation, concentration and its phytotoxic impacts in in vivo grown seedlings of Sesbania sesban L. Merrill. Mohanty M, Pradhan C, Patra HK. Acta Biol Hung. 2015 Mar
  • Lithium, Vanadium and Chromium Uptake Ability of Brassica juncea from Lithium Mine Tailings. Elektorowicz M, Keropian Z. Int J Phytoremediation. 2015
  • Alleviation of chromium toxicity by glycinebetaine is related to elevated antioxidant enzymes and suppressed chromium uptake and oxidative stress in wheat (Triticum aestivum L.). Ali S, Chaudhary A, Rizwan M, Anwar HT, Adrees M, Farid M, Irshad MK, Hayat T, Anjum SA. Environ Sci Pollut Res Int. 2015 Mar 11.
  • Crystal structure of bis-[trans-(ethane-1,2-di-amine-k(2) N,N')bis-(thio-cyanato-kN)chromium(III)] tetra-chlorido-zincate from synchrotron data. Moon D, Choi JH. Acta Crystallogr E Crystallogr Commun. 2015 Jan 1
  • Direct access to macroporous chromium nitride and chromium titanium nitride with inverse opal structure. Zhao W, DiSalvo FJ. Chem Commun (Camb). 2015 Mar 5
  • Chromium content in the human hip joint tissues. Brodziak-Dopiera?a B, Kwapuli?ski J, Sobczyk K, Wiechu?a D. Biomed Environ Sci. 2015 Feb
  • The modification of ferroelectric LiNbO3(0001) surfaces using chromium oxide thin films. Herdiech MW, Zhu X, Morales-Acosta MD, Walker FJ, Altman EI. Phys Chem Chem Phys. 2015 Mar 13.
  • [Determination of hexavalent chromium in atmospheric particles PM2.5 and PM10 by ion chromatography with inductively coupled plasma mass spectrometry]. Dao X, Lu Y, Teng E, Zhang L, Wang C, Li L. Se Pu. 2014 Sep