Dysprosium is a naturally occurring rare earth element whose abundance is, on the average, 4.5 ppm of the earth's crust. It occurs in gadolinite, xenotime, samarskite and other rare earth mineral. Discovered in 1886, the silver-gray, soft metal that can be worked by conventional methods. Dysprosium is used a neutron-absorbing foil to detect radioactive reactions and for neutron absorbing rods in nuclear reactors. Dysprosium oxide, or dysprosia, is used as an activator for the yellow component of the phosphors used in black and white television picture tubes.
Synonyms and Related Terms
Dy; dysprosium oxide; dysprosia
|Composition||Dy (atomic no. 66)|
|Molecular Weight||atomic wt= 162.50|
Hazards and Safety
Sensitive to air and moisture. Contact may cause irritation.
Fisher Scientific: MSDS
Sources Checked for Data in Record
- Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
- Van Nostrand's Scientific Encyclopedia, Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976
- The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983
- The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998