Difference between revisions of "Praseodymium"
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Pr | Pr | ||
| + | == Risks == | ||
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| + | * Sensitive to air and moisture. | ||
| + | * Fisher Scientific: [https://fscimage.fishersci.com/msds/99050.htm MSDS] | ||
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| + | ==Physical and Chemical Properties== | ||
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! scope="row"| Melting Point | ! scope="row"| Melting Point | ||
| − | | 930 | + | | 930 C |
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! scope="row"| Density | ! scope="row"| Density | ||
| − | | 6.78-6.81 | + | | 6.78-6.81 g/ml |
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! scope="row"| Molecular Weight | ! scope="row"| Molecular Weight | ||
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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 13:16, 20 September 2022
Description
A rare earth, metallic element. Praseodymium has an abundance on 6-9 ppm in the earth's crust. It is found in rare earth minerals, i.e. monazite, cerite and allonite. Praseodymium is a soft, yellowish metal that tarnishes readily in moist air to form green salts. Its salts are used as a colorants in glazes and glasses and as a components in phosphors and lasers. A zircon/praseodymium yellow is used as a stable yellow colorant up to 1280 C.
Synonyms and Related Terms
Pr
Risks
- Sensitive to air and moisture.
- Fisher Scientific: MSDS
Physical and Chemical Properties
| Composition | Pr (atomic no. 59) |
|---|---|
| CAS | 7440-10-0 |
| Melting Point | 930 C |
| Density | 6.78-6.81 g/ml |
| Molecular Weight | atomic wt = 140.9077 |
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
- The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 7891
- Robert Fournier, Illustrated Dictionary of Practical Pottery, Chilton Book Company, Radnor, PA, 1992