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Page 1 of 2 Ytterbium (Yb) Ytterbium (Yb) - Chemical properties, Health and Environmental effects Page 1 of 2 Search : Go! Ytterbium - Yb Contact us Chemical properties of Ytterbium - Health effects of ytterbium - Environmental effects of ytterbium Atomic number 70 Atomic mass 173.04 g.mol -1 Electronegativity according to Pauling 1.1 Density 7 g.cm-3 at 20°C Melting point 824 °C Boiling point 1466 °C Vanderwaals radius unknown Ionic radius unknown Isotopes 9 Electronic shell [ Xe ] 4f14 6s2 Energy of second ionisation 602.4 kJ.mol -1 Energy of second ionisation 1172.3 kJ.mol -1 Energy of third ionisation 2472.3 kJ.mol -1 Standard potential - 2.27 V Jean de Marignac in Discovered by 1878 Ytterbium Ytterbium is a soft, malleable and rather ductile element that exhibits a bright silvery luster. A rare earth, the element is easily attacked and dissolved by mineral acids, slowly reacts with water, and oxidizes in air. The oxide forms a protective layer on the surface. Compounds of ytterbium are rare. Chemical Properties Find more sources/options for Chemical Properties Applications www.webcrawler.com Ytterbium is sometimes associated with yttrium or other related elements and is used in certain steels. Its metal could be used to help improve the grain refinement, strength, and other mechanical properties of stainless steel. Some ytterbium alloys have been used in dentistry. One ytterbium isotope has been used Cerium as a radiation source substitute for a portable X-ray machine when electricity was not available. Like other PIDC: US Service & rare-earth elements, it can be used to dope phosphors, or for ceramic capacitors and other electronic Quality at Chinese Prices devices, and it can even act as an industrial catalyst. www.pidc.com Ytterbium in the environment Which Element are Ytterbium is found with other rare earth elements in several rare minerals as gadolinite, monazite, and you? xenotime. Natural ytterbium is a mix of seven stable isotopes. It is most often recovered commercially Fire, water, metal, wood from monazite sand (~0.03% ytterbium). The main mining areas are China, US, Brazil, India, Sri Lanka, and earth. See what and Australia and reserves of ytterbium are estimated to be around a million tonnes. World production of element suits you best. ytterbium is around 50 tonnes per year. www.astrology.com Health effects of ytterbium Optical Coating Materials Ytterbium has no biological role, but it has been noted that its salts stimulate metabolism. Ytterbium is a We make optical coating skin and eye irritant and it is also a suspected teratogen. All compounds should be stored in closed consumables ,chemicals. containers, protected from air and moisture and treated as highly toxic. A leading manufacturer www.photonicsupply.com Effects of ytterbium on the environment Metallic ytterbium dust poses a fire and explosion hazard. Ytterbium poses no threat to plants and animals and its salts are being introduced into the chemical industry as catalysts in place of ones that are regarded Planetary as toxic and polluting. Mixer/Deaerator For pastes and resins, Ytterbium Compounds Ytterbium (Yb) Resource Toxic Chemical Storage production & lab models. acetate-chloride-oxide-sulfate 1gm-50kgm Purchase High Purity Ytterbium Metal, Oxide, Made in USA to Meet All Your Needs Request Dual action equals fast 99.9%-99.999% USA Chloride 99.9% Free Catalog & Quote Today! www.technic.com www.rareearthproducts.com www.baotou-rareearth.com www.USChemicalStorage.com http://www.lenntech.com/Periodic-chart-elements/Yb-en.htm 5/28/2008 Ytterbium (Yb) - Chemical properties, Health and Environmental effects Page 2 of 2 Back to periodic table of elements. Ads by Google Oxygen Elements Elements of Design Element Tungsten Rare Chemicals Story Elements [ Home ] [ Back ] [ More Information or question on Ytterbium? ] Copyright © 1998-2008 Lenntech Water treatment & air purification Holding B.V. Rotterdamseweg 402 M 2629 HH Delft, The Netherlands tel: (+31)(0)15 26.10.900 fax: (+31)(0)15 26.16.289 e-mail: [email protected] http://www.lenntech.com/Periodic-chart-elements/Yb-en.htm 5/28/2008.
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