Chromium Molybdenum Metal is
available as disc, granules, Ingot, pellets, powder, rod, wire, foil, and sputtering target. See research below. Ultra high purity and high purity forms also include metal powder, submicron powder and nanoscale, quantum dots, targets for thin film deposition, pellets for evaporation and single crystal or polycrystalline forms. Elements can also be introduced into alloys or other systems as compounds such as fluorides, oxides or chlorides or as solutions. Chromium Molybdenummetal is generally immediately available in most volumes.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. Additional technical, research and safety (MSDS) information is available as is a Reference Calculator for converting relevant units of measurement.
Chromium is a Block D, Group 6, Period 4 element. The number of electrons in each of Chromium's shells is 2, 8, 13, 1 and its electronic configuration is [Ar] 3d5 4s1. In its elemental form chromium's CAS number is 7440-47-3. The chromium atom has a radius of 124.9.pm and it's Van der Waals radius is 200.pm. Hexavalent chromium is toxic. Chromium is highly resistant to corrosion. This has led to its use in numerous alloying and steel producing applications. When chromium is added to glass or ceramic glazes, it produces a brilliant green. Chromium is available as metal and compounds with purities from 99% to 99.999% (ACS grade to ultra-high purity); metals in the form of foil, sputtering target, and rod, and compounds as submicron and nanopowder. It is also used as a paint pigment for this purpose.Although chromium metal is an essential trace element, hexavalent chromium (Cr(VI)) is especially toxic and carcinogenic. Recently, chromites have formed the basis for cathode compositions for oxygen generation and fuel cell applications. Chromium information, including Technical Data, Safety Data and its High Purity properties, research, applications and other useful facts are discussed here. Scientific facts such as the atomic structure, ionization energy, abundance on Earth, conductivity and thermal properties are included. Chromium was first discovered by Anders Ekeberg in 1802. Due to its various colorful compounds, Chromium was named after the Greek word 'chroma' meaning color. See Chromium research below.
Molybdenum is a Block D, Group 6, Period 5 element. The number of electrons in each of Molybdenum's shells is 2, 8, 18, 13, 1 and its electronic configuration is [Kr] 4d5 5s1. In its elemental form molybdenum's CAS number is 7439-98-7. The molybdenum atom has a radius of 136.3.pm and it's Van der Waals radius is 200.pm. Molybdenum is toxic unless it is in small quantities. Molybdenum has the third highest melting point of any element, exceeded only by tungsten and tantalum. Molybdenum is a catalyst in the oil refining. It has many other applications, including in catalysts, pigments, corrosion inhibitors and lubricants. It has a very high elastic modulus. Molybdenum is available as metal and compounds with purities from 99% to 99.999% (ACS grade to ultra-high purity); metals in the form of foil, sputtering target, and rod, and compounds as submicron and nanopowder. It is used in steel alloys to add hardness and raise melting points. It is a component in Hastelloys brand steel. Molybdenum is used in nuclear reactors and aerospace components. Molybdenum was first discovered by Carl Wilhelm in 1778. The origin of the name Molybdenum comes from the Greek word molubdos meaning lead. See Molybdenum research below.
trans-Tetra-carbonyl-bis-[tris-(3-fluoro-phen-yl)phosphane]chromium(0).
Norlidah MN, Yazid MY, Shawkataly OB, Rosli MM, Fun HK.
Acta Crystallogr Sect E Struct Rep Online. 2011 Dec 1;67(Pt 12):m1652-m1653. Epub 2011 Nov 2.
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Preparation and characterization of La(III) encapsulated silica gel/chitosan composite and its metal uptake studies.
Gandhi MR, Meenakshi S.
J Hazard Mater. 2011 Nov 28. [Epub ahead of print]
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22197561
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Electro-migration of heavy metals in an aged electroplating contaminated soil affected by the coexisting hexavalent chromium.
Zhang W, Zhuang L, Tong L, Lo IM, Qiu R.
Chemosphere. 2011 Dec 23. [Epub ahead of print]
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22197017
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Angular momentum conservation in dipolar energy transfer.
Guo D, Knight TE, McCusker JK.
Science. 2011 Dec 23;334(6063):1684-7.
PMID:
22194572
[PubMed - in process]
Selected Trace Elements in the Sacramento River, California: Occurrence and Distribution.
Taylor HE, Antweiler RC, Roth DA, Alpers CN, Dileanis P.
Arch Environ Contam Toxicol. 2011 Dec 23. [Epub ahead of print]
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22193863
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Chromium and genomic stability.
Wise SS, Wise JP Sr.
Mutat Res. 2011 Dec 13. [Epub ahead of print]
PMID:
22192535
[PubMed - as supplied by publisher]
A Theoretical Evaluation of Ethylene Insertion into Chromium Alkyl Bonds of Cp-Donor based Olefin Polymerization Catalysts.
Xu R, Klatt G, Enders M, Koeppel H.
J Phys Chem A. 2011 Dec 22. [Epub ahead of print]
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22191673
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Adsorption of hexavalent chromium from aqueous solution by modified corn stalk: A fixed-bed column study.
Chen S, Yue Q, Gao B, Li Q, Xu X, Fu K.
Bioresour Technol. 2011 Dec 3. [Epub ahead of print]
PMID:
22189077
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Occurrence of Multidrug-Resistant and Toxic-Metal Tolerant Enterococci in Fresh Feces from Urban Pigeons in Brazil.
da Silva VL, Caçador NC, da Silva CD, Fontes CO, Garcia GD, Nicoli JR, Diniz CG.
Microbes Environ. 2011 Dec 22. [Epub ahead of print]
PMID:
22188908
[PubMed - as supplied by publisher]
Revision of a tibial baseplate using a customized oxinium component in a case of suspected metal allergy. A case report.
Van Opstal N, Verheyden F.
Acta Orthop Belg. 2011 Oct;77(5):691-5.
PMID:
22187849
[PubMed - in process]
Retention Strength of Cobalt-Chromium vs Nickel-Chromium Titanium vs CP Titanium in a Cast Framework Association of Removable Partial Overdenture.
Souza JE, Silva NR, Coelho PG, Zavanelli AC, Ferracioli RC, Zavanelli RA.
J Contemp Dent Pract. 2011 May 1;12(3):179-86.
PMID:
22186813
[PubMed - in process]
Metal analysis, phytotoxic, insecticidal and cytotoxic activities of selected medicinal plants of Khyber Pakhtunkhwa.
Khuda F, Iqbal Z, Zakiullah -, Khan A, Nasir F, Muhammad N, Khan JA, Khan MS.
Pak J Pharm Sci. 2012 Jan;25(1):51-58.
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22186309
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Correlation between metal allergy and treatment outcomes after ankle fracture fixation.
So S, Harris IA, Naylor JM, Adie S, Mittal R.
J Orthop Surg (Hong Kong). 2011 Dec;19(3):309-13.
PMID:
22184160
[PubMed - in process]
Enhancement of the acute phase response to a lipopolysaccharide challenge in steers supplemented with chromium.
Burdick NC, Bernhard BC, Carroll JA, Rathmann RJ, Johnson BJ.
Innate Immun. 2011 Dec 16. [Epub ahead of print]
PMID:
22180563
[PubMed - as supplied by publisher]
Identification and hexavalent chromium reduction characteristics of Pannonibacter phragmitetus.
Shi Y, Chai L, Yang Z, Jing Q, Chen R, Chen Y.
Bioprocess Biosyst Eng. 2011 Dec 18. [Epub ahead of print]
PMID:
22179413
[PubMed - as supplied by publisher]
Exposure to particulate hexavalent chromium exacerbates allergic asthma pathology.
Schneider BC, Constant SL, Patierno SR, Jurjus RA, Ceryak SM.
Toxicol Appl Pharmacol. 2011 Dec 9. [Epub ahead of print]
PMID:
22178736
[PubMed - as supplied by publisher]
Circulating levels of metals are related to carotid atherosclerosis in elderly.
Lind PM, Olsén L, Lind L.
Sci Total Environ. 2011 Dec 15. [Epub ahead of print]
PMID:
22178028
[PubMed - as supplied by publisher]
Highly active nanoscale zero-valent iron (nZVI)-Fe(3)O(4) nanocomposites for the removal of chromium(VI) from aqueous solutions.
Lv X, Xu J, Jiang G, Tang J, Xu X.
J Colloid Interface Sci. 2011 Dec 1. [Epub ahead of print]
PMID:
22177747
[PubMed - as supplied by publisher]
Airborne concentrations of metals and total dust during solid catalyst loading and unloading operations at a petroleum refinery.
Lewis RC, Gaffney SH, Le MH, Unice KM, Paustenbach DJ.
Int J Hyg Environ Health. 2011 Dec 14. [Epub ahead of print]
PMID:
22177528
[PubMed - as supplied by publisher]
Simultaneous Synthesis of Both Rings of Chromenes via a Benzannulation/o-Quinone Methide Formation/Electrocyclization Cascade.
Majumdar N, Korthals KA, Wulff WD.
J Am Chem Soc. 2011 Dec 16. [Epub ahead of print]
PMID:
22176537
[PubMed - as supplied by publisher]
Process development for the separation and recovery of Mo and Co from chloride leach liquors of petroleum refining catalyst by solvent extraction.
Banda R, Sohn SH, Lee MS.
J Hazard Mater. 2012 Jan 9. [Epub ahead of print]
PMID:
22336581
[PubMed - as supplied by publisher]
Selective cleavage of pepsin by molybdenum metallopeptidase.
Yenjai S, Malaikaew P, Liwporncharoenvong T, Buranaprapuk A.
Biochem Biophys Res Commun. 2012 Feb 5. [Epub ahead of print]
PMID:
22330807
[PubMed - as supplied by publisher]
Iminopyridine Complexes of Manganese, Rhenium, and Molybdenum Derived from Amino Ester Methylserine and Peptides Gly-Gly, Gly-Val, and Gly-Gly-Gly: Self-Assembly of the Peptide Chains.
Alvarez CM, García-Rodríguez R, Miguel D.
Inorg Chem. 2012 Feb 13. [Epub ahead of print]
PMID:
22329711
[PubMed - as supplied by publisher]
Low-Temperature, Solution-Processed MoO(x) for Efficient and Stable Organic Solar Cells.
Zilberberg K, Gharbi H, Behrendt A, Trost S, Riedl T.
ACS Appl Mater Interfaces. 2012 Feb 15. [Epub ahead of print]
PMID:
22324481
[PubMed - as supplied by publisher]
A molecular MoS? edge site mimic for catalytic hydrogen generation.
Karunadasa HI, Montalvo E, Sun Y, Majda M, Long JR, Chang CJ.
Science. 2012 Feb 10;335(6069):698-702.
PMID:
22323816
[PubMed - in process]
The use of total reflectance X-ray fluorescence (TXRF) for the determination of metals in the pharmaceutical industry.
Antosz FJ, Xiang Y, Diaz AR, Jensen AJ.
J Pharm Biomed Anal. 2012 Jan 16. [Epub ahead of print]
PMID:
22316622
[PubMed - as supplied by publisher]
Kinetic Resolution of Planar-Chiral (?(6) -Arene)Chromium Complexes by Molybdenum-Catalyzed Asymmetric Ring-Closing Metathesis.
Ogasawara M, Wu WY, Arae S, Watanabe S, Morita T, Takahashi T, Kamikawa K.
Angew Chem Int Ed Engl. 2012 Feb 3. doi: 10.1002/anie.201108292. [Epub ahead of print]
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22308166
[PubMed - as supplied by publisher]
Measurement of mass attenuation coefficients of Rhizophora spp. binderless particleboards in the 16.59-25.26keV photon energy range and their density profile using x-ray computed tomography.
Marashdeh MW, Bauk S, Tajuddin AA, Hashim R.
Appl Radiat Isot. 2012 Jan 20. [Epub ahead of print]
PMID:
22304963
[PubMed - as supplied by publisher]
Nitrite and Nitrite Reductases: From Molecular Mechanisms to Significance in Human Health and Disease.
Castiglione N, Rinaldo S, Giardina G, Stelitano V, Cutruzzolà F.
Antioxid Redox Signal. 2012 Feb 5. [Epub ahead of print]
PMID:
22304560
[PubMed - as supplied by publisher]
Molybdenum(vi) catalysts obtained from ?(3)-allyl dicarbonyl precursors: Synthesis, characterization and catalytic performance in cyclooctene epoxidation.
Gamelas CA, Gomes AC, Bruno SM, Almeida Paz FA, Valente AA, Pillinger M, Romão CC, Gonçalves IS.
Dalton Trans. 2012 Feb 2. [Epub ahead of print]
PMID:
22302175
[PubMed - as supplied by publisher]
Field-Effect Tunneling Transistor Based on Vertical Graphene Heterostructures.
Britnell L, Gorbachev RV, Jalil R, Belle BD, Schedin F, Mishchenko A, Georgiou T, Katsnelson MI, Eaves L, Morozov SV, Peres NM, Leist J, Geim AK, Novoselov KS, Ponomarenko LA.
Science. 2012 Feb 2. [Epub ahead of print]
PMID:
22300848
[PubMed - as supplied by publisher]
Spectroscopic reflectometry of mirror surfaces during plasma exposure.
Wisse M, Eren B, Marot L, Steiner R, Meyer E.
Rev Sci Instrum. 2012 Jan;83(1):013509.
PMID:
22299953
[PubMed - in process]
[Absorption characteristics of molybdenum by reed and cattail].
Lian JJ, Xu SG, Han CW.
Huan Jing Ke Xue. 2011 Nov;32(11):3335-40. Chinese.
PMID:
22295632
[PubMed - in process]
Conserved Signal Peptide Recognition Systems across the Prokaryotic Domains.
Coulthurst SJ, Dawson A, Hunter WN, Sargent F.
Biochemistry. 2012 Feb 13. [Epub ahead of print]
PMID:
22289056
[PubMed - as supplied by publisher]
Two methods can simultaneously display both intramuscular nerves and blood vessels.
Yu DZ, Liu AT, Zhang JL, Dang RS, Chen G, Liu BL, Han T, Yi J, Nagasao T, Jiang H.
Plast Reconstr Surg. 2012 Feb;129(2):401-11.
PMID:
22286423
[PubMed - in process]
Synthesis, characterization and biological activities of some new chromium molybdenum and tungsten complexes with 2,6-diaminopyridine.
Soliman AA, Ali SA, Marei AH, Nassar DH.
Spectrochim Acta A Mol Biomol Spectrosc. 2012 Apr;89:329-32. Epub 2011 Dec 30.
PMID:
22286054
[PubMed - in process]
Tuning the Photochromic Properties of Molybdenum Bisphosphonate Polyoxometalates.
El Moll H, Dolbecq A, Mbomekalle IM, Marrot J, Deniard P, Dessapt R, Mialane P.
Inorg Chem. 2012 Jan 27. [Epub ahead of print]
PMID:
22283587
[PubMed - as supplied by publisher]
In vivo evaluation of defined polished titanium surfaces to prevent soft tissue adhesion.
Hayes JS, Welton JL, Wieling R, Richards RG.
J Biomed Mater Res B Appl Biomater. 2012 Jan 27. doi: 10.1002/jbm.b.31967. [Epub ahead of print]
PMID:
22282225
[PubMed - as supplied by publisher]
Reaction dynamics of Mo + O(2) ? MoO + O studied by a crossed-beam velocity map imaging technique.
Honma K, Matsumoto Y.
J Chem Phys. 2012 Jan 21;136(3):034301.
PMID:
22280754
[PubMed - in process]
A new class of electrocatalysts for hydrogen production from water electrolysis: metal monolayers supported on low-cost transition metal carbides.
Esposito DV, Hunt ST, Kimmel YC, Chen JG.
J Am Chem Soc. 2012 Feb 15;134(6):3025-33. Epub 2012 Feb 1.
PMID:
22280370
[PubMed - in process]
Recent Research & Development for Metals
Rapid syntheses of a metal-organic framework material Cu(3)(BTC)(2)(H(2)O)(3) under microwave: a quantitative analysis of accelerated syntheses. Khan NA, Haque E, Jhung SH. Phys Chem Chem Phys. 2010 Mar 20;12(11):2625-31. Epub 2010 Jan 6. PMID: 20200739 [PubMed - in process]
Improved reliability from a plasma-assisted metal-insulator-metal capacitor comprising a high-k HfO(2) film on a flexible polyimide substrate. Singh Meena J, Chu MC, Kuo SW, Chang FC, Ko FH. Phys Chem Chem Phys. 2010 Mar 20;12(11):2582-9. Epub 2010 Jan 26. PMID: 20200734 [PubMed - in process]
Rational synthesis and characterization of porous Cu(ii) coordination polymers. Noro S. Phys Chem Chem Phys. 2010 Mar 20;12(11):2519-31. Epub 2010 Jan 18. PMID: 20200727 [PubMed - in process]
Construction of a monoanionic S,N,S-pincer ligand with a pyrrole core by sequential [1,2] phospho-Fries rearrangement. Characterization of palladium and silver coordination complexes. Fraix A, Lutz M, Spek AL, Gebbink RJ, van Koten G, Salaün JY, Jaffrès PA. Dalton Trans. 2010 Mar 21;39(11):2942-6. Epub 2010 Feb 5. PMID: 20200723 [PubMed - in process]
Zwitterionic dicopper helicates: anion encapsulation and binding studies. Wenzel M, Bruere SR, Knapp QW, Tasker PA, Plieger PG. Dalton Trans. 2010 Mar 21;39(11):2936-41. Epub 2010 Feb 8. PMID: 20200722 [PubMed - in process]
Organic-soluble optically pure anionic metal complexes PPh(4)[M(III)(S,S-EDDS)].2H(2)O (M = Fe, Co, Cr). Chmel NP, Howson SE, Allan LE, Barker J, Clarkson GJ, Turner SS, Scott P. Dalton Trans. 2010 Mar 21;39(11):2919-27. Epub 2010 Feb 9. PMID: 20200720 [PubMed - in process]
Crystallographic elucidation of purely structural, thermal and light-induced spin transitions in an iron(ii) binuclear complex. Kaiba A, Shepherd HJ, Fedaoui D, Rosa P, Goeta AE, Rebbani N, Létard JF, Guionneau P. Dalton Trans. 2010 Mar 21;39(11):2910-8. Epub 2010 Feb 9. PMID: 20200719 [PubMed - in process]
Anionic zinc-trimesic acid MOFs with unusual topologies: Reversible hydration studies. Davies K, Bourne SA, Ohrström L, Oliver CL. Dalton Trans. 2010 Mar 21;39(11):2869-74. Epub 2010 Feb 5. PMID: 20200714 [PubMed - in process]
A hexadentate bis(thiosemicarbazonato) ligand: rhenium(v), iron(iii) and cobalt(iii) complexes. Paterson BM, White JM, Donnelly PS. Dalton Trans. 2010 Mar 21;39(11):2831-7. Epub 2010 Feb 5. PMID: 20200709 [PubMed - in process]
Cu(ii) and Ni(ii) dioxotetraamine complexes integrated with tetrathiafulvalene moiety; structures and solution chemistry. Lu ZJ, Wang JP, Zhu QY, Huo LB, Qin YR, Dai J. Dalton Trans. 2010 Mar 21;39(11):2798-803. Epub 2010 Feb 9. PMID: 20200705 [PubMed - in process]
Synthesis, structure, and magnetic properties of bis(monosubstituted-pyrazine)dihalocopper(ii). Herringer SN, Longendyke AJ, Turnbull MM, Landee CP, Wikaira JL, Jameson GB, Telfer SG. Dalton Trans. 2010 Mar 21;39(11):2785-97. Epub 2010 Feb 4. PMID: 20200704 [PubMed - in process]
Tailor made synthesis of amphiphilic azoaromatics via regioselective C-N bond fusion. Comparative studies of surface properties of the two positional isomers and cobalt complexes. Joy S, Pal P, Mahato M, Talapatra GB, Goswami S. Dalton Trans. 2010 Mar 21;39(11):2775-84. Epub 2010 Feb 15. PMID: 20200703 [PubMed - in process]
Rational design of diphosphorus ligands - a route to superior catalysts. Gillespie JA, Dodds DL, Kamer PC. Dalton Trans. 2010 Mar 21;39(11):2751-64. Epub 2010 Jan 4. PMID: 20200699 [PubMed - in process]
Revascularization options in patients with chronic kidney disease. Ashrith G, Elayda MA, Wilson JM. Tex Heart Inst J. 2010;37(1):9-18. PMID: 20200622 [PubMed - in process]
[Antiplatelet treatment after percutaneous coronary intervention in a patient with idiopathic thrombocytopenic purpura.] Can MM, Tanboga IH, Boztosun B, Kaymaz C. Turk Kardiyol Dern Ars. 2009 Dec;37(8):575-7. Turkish.
Imaging and manipulation of the competing electronic phases near the Mott metal-insulator transition. Kim TH, Angst M, Hu B, Jin R, Zhang XG, Wendelken JF, Plummer EW, Li AP. Proc Natl Acad Sci U S A. 2010 Mar 3. [Epub ahead of print] PMID: 20200312 [PubMed - as supplied by publisher]
Respiratory Symptoms and Exposure-Response Relations in Workers exposed to Metalworking Fluid Aerosols. Lillienberg L, Andersson EM, Järvholm B, Torén K. Ann Occup Hyg. 2010 Mar 3. [Epub ahead of print] PMID: 20200090 [PubMed - as supplied by publisher]
Influences of properties of protein and adsorption surface on removal kinetics of protein adsorbed on metal surface by H(2)O(2)-electrolysis treatment. Imamura K, Oshita M, Iwai M, Kuroda T, Watanabe I, Sakiyama T, Nakanishi K. J Colloid Interface Sci. 2010 Feb 1. [Epub ahead of print] PMID: 20199779 [PubMed - as supplied by publisher]
Estimation of Risk Assessment of Some Heavy Metals Intake Through Black Scabbardfish (Aphanopus carbo) Consumption in Portugal. Cardoso C, Farias I, Costa V, Nunes M, Gordo L. Risk Anal. 2010 Feb 23. [Epub ahead of print] PMID: 20199650 [PubMed - as supplied by publisher]
Spectroscopic and Computational Studies of a mu-eta(2):eta(2)-Disulfido-Bridged Dinickel(II) Species, [{(PhTt(tBu))Ni}(2)(mu-eta(2):eta(2)-S(2))]: Comparison of Side-On Disulfido and Peroxo Bonding in (Ni(II))(2) and (Cu(II))(2) Species. Van Heuvelen KM, Cho J, Riordan CG, Brunold TC. Inorg Chem. 2010 Mar 3. [Epub ahead of print] PMID: 20199100 [PubMed - as supplied by publisher]
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