Difference between revisions of "Samarium"
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Sm | Sm | ||
| + | ==Risks == | ||
| + | |||
| + | * Combustible. | ||
| + | * Sensitive to moisture and air. | ||
| + | * Contact may cause irritation. | ||
| + | * Fisher Scientific: [https://fscimage.fishersci.com/msds/16097.htm MSDS] | ||
| + | |||
| + | ==Physical and Chemical Properties== | ||
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! scope="row"| Melting Point | ! scope="row"| Melting Point | ||
| − | | 1072 | + | | 1072 C |
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! scope="row"| Density | ! scope="row"| Density | ||
| − | | 7.53 | + | | 7.53 g/ml |
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! scope="row"| Molecular Weight | ! scope="row"| Molecular Weight | ||
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! scope="row"| Boiling Point | ! scope="row"| Boiling Point | ||
| − | | 1791-1900 | + | | 1791-1900 C |
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| − | == | + | ==Resources and Citations== |
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* G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971 Comment: p. 178 | * G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971 Comment: p. 178 | ||
Latest revision as of 12:38, 28 June 2022
Description
A yellowish-gray rare earth metallic element. Samarium was first identified by Lecoq de Boisbaudran in 1879. It has an abundance of 6.5-7.0 ppm in the earth's crust and in found in the minerals monazite, bastnasite, samarskite, cerite, orthite, ytterbite, and fluorspar. Samarium is a soft metal that quickly forms a hard, brittle oxide layer in air. It is used as a permanent magnet, an IR absorbent in glass, and a dopant in laser crystals.
Synonyms and Related Terms
Sm
Risks
- Combustible.
- Sensitive to moisture and air.
- Contact may cause irritation.
- Fisher Scientific: MSDS
Physical and Chemical Properties
| Composition | Sm (atomic no. 62) |
|---|---|
| CAS | 7440-19-9 |
| Melting Point | 1072 C |
| Density | 7.53 g/ml |
| Molecular Weight | atomic wt = 150.4 |
| Boiling Point | 1791-1900 C |
Resources and Citations
- G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 178
- 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
- Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
- The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 8498
- The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998