Difference between revisions of "Scandium"
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Sc; ekaboron; scandio (It.); Escândio (Port.); escandio (Esp.); Skandium (Sven.) | Sc; ekaboron; scandio (It.); Escândio (Port.); escandio (Esp.); Skandium (Sven.) | ||
| − | == | + | == Risks == |
| − | Hexagonal close packed crystal system. Reacts with acids | + | * Flammable solid. |
| + | * May explode when exposed to heat. | ||
| + | * Contact may cause irritation. | ||
| + | * Fisher Scientific: [https://fscimage.fishersci.com/msds/99162.htm MSDS] | ||
| + | |||
| + | == Physical and Chemical Properties == | ||
| + | |||
| + | * Hexagonal close packed crystal system. | ||
| + | * Reacts with acids | ||
{| class="wikitable" | {| class="wikitable" | ||
| Line 20: | Line 28: | ||
|- | |- | ||
! scope="row"| Melting Point | ! scope="row"| Melting Point | ||
| − | | 1539-1541 | + | | 1539-1541 C |
|- | |- | ||
! scope="row"| Density | ! scope="row"| Density | ||
| − | | 2.9890 | + | | 2.9890 g/ml |
|- | |- | ||
! scope="row"| Molecular Weight | ! scope="row"| Molecular Weight | ||
| Line 29: | Line 37: | ||
|- | |- | ||
! scope="row"| Boiling Point | ! scope="row"| Boiling Point | ||
| − | | 2727-2836 | + | | 2727-2836 C |
|} | |} | ||
| − | == | + | ==Resources and Citations== |
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | + | * Web Elements: [http://www.webelements.com/webelements/elements/text/Sc/key.html Website] | |
* G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971 Comment: p. 179 | * G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971 Comment: p. 179 | ||
Latest revision as of 12:38, 15 June 2022
Description
A rare earth metallic element. Scandium was predicted by Mendeleev in 1869 and given the name ekaboron, but not discovered until 1879 by Lars Fredrik Nilson of Sweden. It has an abundance of 5-25 ppm in the earth's crust. Scandium occurs in the mineral thortveitite and in wolframite, davidite, ytterbite, orthite, and cerrite. It is a silvery white metal that does not tarnish in air. Scandium currently does not have any major uses.
Synonyms and Related Terms
Sc; ekaboron; scandio (It.); Escândio (Port.); escandio (Esp.); Skandium (Sven.)
Risks
- Flammable solid.
- May explode when exposed to heat.
- Contact may cause irritation.
- Fisher Scientific: MSDS
Physical and Chemical Properties
- Hexagonal close packed crystal system.
- Reacts with acids
| Composition | Sc (atomic no. 21) |
|---|---|
| CAS | 7440-20-2 |
| Melting Point | 1539-1541 C |
| Density | 2.9890 g/ml |
| Molecular Weight | atomic wt = 44.9559 |
| Boiling Point | 2727-2836 C |
Resources and Citations
- Web Elements: Website
- G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 179
- 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 8537
- The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998