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Ytterbium (Yb) - Chemical properties, Health and Environmental effects Page 1 of 2

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Chemical properties of Ytterbium - Health effects of ytterbium - Environmental effects of ytterbium

Atomic number 70 Atomic mass 173.04 g.mol -1 according to Pauling 1.1

Density 7 g.cm-3 at 20°C

Melting point 824 °C 1466 °C Vanderwaals radius unknown unknown 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 acids, slowly reacts with , and oxidizes in air. The 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 or other related elements and is used in certain steels. Its could be used to help improve the grain refinement, strength, and other mechanical properties of . Some ytterbium alloys have been used in . One ytterbium has been used as a 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 as , , and you? . 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 , US, , , , and earth. See what and and reserves of ytterbium are estimated to be around a million . 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 ,

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

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http://www.lenntech.com/Periodic-chart-elements/Yb-en.htm 5/28/2008