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CAS No 7440-10-0 , praseodymium

  • Name: praseodymium
  • Synonyms: ACMC-1BKTG; 110123-50-7;praseodymium; (144pr)praseodymium; 7440-10-0;(143pr)praseodymium; PR; AG-G-95685; Praseodymium-141;
  • CAS Registry Number:
  • Transport: UN 3208 4
  • Melting Point: 931 °C(lit.)
  • Boiling Point: 3520 °C(lit.)
  • Density: 6.71 g/mL at 25 °C(lit.)
  • Safety Statements: As a lanthanoid, it may depress coagulation of the blood. Limited data suggest moderate toxicity. Flammable in the form of dust when exposed to heat or flame or by chemical reaction. Fine dust ignites readily. Incompatible with air or halogens. Reacts rapidly with H2O and acids. See also LANTHANUM, POWDERED METALS, and RARE EARTHS.
  • Hazard Symbols: F: Flammable;
  • EINECS: 231-120-3
  • Molecular Weight: 140.90765
  • InchiKey: PUDIUYLPXJFUGB-UHFFFAOYSA-N
  • InChI: InChI=1S/Pr
  • Risk Statements: 17-11
  • Molecular Formula: Pr
  • Molecular Structure:CAS No:7440-10-0 praseodymium
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7440-10-0 PRASEODYMIUM CHIPS; 99.9%, 3N (REO)

  • Germany ABCR GmbH & Co KG [Manufacturer]
  • Tel: +49 721 95061-0
  • Fax: +49 721 95061-80
  • Address: Im Schlehert 10
    76187 Karlsruhe
    Germany ,Germany
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7440-10-0 Praseodymium, Metal

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7440-10-0 Praseodymium

  • China Beijing Cerametek Materials Co. Ltd. [Manufacturer]
  • Tel: +86-10-6156.6641
  • Fax: +86-10-6156.1674
  • Address: Beijing Cerametek Materials Co. Ltd.
    2-E051, BPE, W. NongLin Rd.,
    FangShan, Beijing, 102400,
    China ,China
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7440-10-0 Praseodymium, Metal

  • Canada Treibacher Industrie Inc [, Manufacturer, Distributor/Wholesaler]
  • Tel: 001-416-5352600
  • Fax: 001-416-
  • Address: 515 Consumers Road, Suite 212 Toronto,OntarioCanada
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7440-10-0 PRASEODYMIUM METAL

  • Canada Treibacher Industrie Inc [Manufacturer]
  • Tel: 416-535-2600
  • Fax: 416-535-2602
  • Address: Treibacher Industrie Inc
    67 Mowat Avenue, Suite 332
    M6K 3E3 Toronto, Ontario
    Canada ,Canada
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7440-10-0 P-1014 PRASEODYMIUM METAL

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7440-10-0 PRASEODYMIUM

  • United States PIDC [Manufacturer]
  • Tel: 734-930-9292
  • Fax: 734-930-9293
  • Address: PIDC
    4788 Runway Blvd.
    Ann Arbor, MI 48108 ,United States
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7440-10-0 Praseodymium

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7440-10-0 PRASEODYMIUM

  • China Nanjing Chemlin Chemical Industry Co.,Ltd. [Manufacturer]
  • Tel: +86 25 8369-7070/ +86 138 51816776 (Mobile)
  • Fax: +86 25 8345-3275
  • Address: Rm.902 Longyin Plaza,
    No. 217 Zhongshan Rd.
    (N)Nanjing 210009,China ,China
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References of praseodymium
Title: Praseodymium
CAS Registry Number: 7440-10-0
Literature References: Pr; at. wt 140.90765; at. no. 59; valences 3, 4. A lanthanide; belongs to the cerium group of rare earth metals. Naturally occurring isotope (mass number): 141; known artificial radioactive isotopes: 126, 129-140; 142-152. Prepn of radioactive isotopes by bombardment: Seaborg, Chem. Rev. 27, 199 (1940); Huber et al., Helv. Phys. Acta 18, 221 (1945). Abundance in earth's crust 5.5-9.1 ppm; found in rare earth minerals. Reported in 1843 by Mosander as didymium which was a mixture of Pr and Nd; separated in 1885 by von Welsbach. Separated from other rare earth elements by fractional crystn. Also by ion exchange: Spedding et al., J. Am. Chem. Soc. 69, 2786, 2812 (1947). Prepn of metal by electrolysis: Muthmann, Weiss, Ann. 331, 1 (1904); Canneri, Rossi, Gazz. Chim. Ital. 62, 1160 (1932); Mazza, Atti X Congr. Int. Chim. 3, 604 (1939); Trombe, Mahn, Compt. Rend. 220, 778 (1945). Toxicity study: Haley et al., Toxicol. Appl. Pharmacol. 6, 614 (1964). Reviews of prepn, properties and compds: The Rare Earths, F. H. Spedding, A. H. Daane, Eds. (Krieger, Huntington, N.Y., 1971, reprint of 1961 ed.) 641 pp; Hulet, Bode, "Separation Chemistry of the Lanthanides and Transplutonium Actinides" in MTP Int. Rev. Sci.: Inorg. Chem., Ser. One Vol. 7, K. W. Bagnall, Ed. (Univ. Park Press, Baltimore, 1972) pp 1-45; Moeller, "The Lanthanides", Comprehensive Inorganic Chemistry Vol. 4, J. C. Bailar, Jr. et al., Eds. (Pergamon Press, Oxford, 1973) pp 1-101; F. H. Spedding in Kirk-Othmer Encyclopedia of Chemical Technology vol. 19 (John Wiley & Sons, New York, 3rd ed., 1982) pp 833-854; Chemistry of the Elements, N. N. Greenwood, A. Earnshaw, Eds. (Pergamon Press, New York, 1984) pp 1423-1449. Brief review of properties: G. T. Seaborg, Radiochim. Acta 61, 115-122 (1993).
Properties: Yellowish metal, forms oxide film on exposure to moist air. Two crystalline forms: hexagonal a-form, d 6.475, transforms to b-form at 798°; body-centered cubic b-form, d 6.64, exists at >798°. mp 935°. bp 3020°; also reported as bp 3520° (Spedding). E0 (aq) Pr3+/Pr -2.47 V (calc). Experimental reduction potentials (referred to a normal calomel electrode): -1.875, -1.990 V: Noddack, Brukl, Angew. Chem. 50, 362 (1937). Heat of sublimation (25°): 355.6 kJ/mol. Heat of fusion: 6.912 kJ/mol (Spedding, 1982). Also reported as heat of fusion: 11.3 ±2.1 kJ/mol (Greenwood, Earnshaw).
Melting point: mp 935°
Boiling point: bp 3020°; bp 3520° (Spedding)
Density: d 6.475; d 6.64
 
Derivative Type: Oxide
Molecular Formula: Pr2O3
Molecular Weight: 329.81
Percent Composition: Pr 85.45%, O 14.55%
Properties: d 7.07, prepd by reducing with hydrogen the oxides PrO2 or Pr6O11. Oxidizes to Pr6O11 on heating in air; forms the dioxide, PrO2, on fusing with potassium chlorate.
Density: d 7.07
 
Derivative Type: Hydroxide
Molecular Formula: Pr(OH)3
Molecular Weight: 191.93
Percent Composition: Pr 73.42%, O 25.01%, H 1.58%
Properties: A gelatinous pale green precipitate, obtained by the action of alkali hydroxide on a soln of a praseodymium salt; a purple powder when obtained by the action of water on praseodymium carbide.
 
Derivative Type: Chloride
Molecular Formula: PrCl3
Molecular Weight: 247.27
Percent Composition: Pr 56.99%, Cl 43.01%
Properties: Heptahydrate, green crystals; mp in its water of crystn at 111°; on partial dehydration yields the hexa-, tri-, or monohydrate; on heating to 180-200° in a stream of hydrogen chloride yields the anhydr chloride, green needles, mp 769-782°, sol in water, alcohol. LD50 in mice: 600 mg/kg i.p.; 4.5 g/kg orally (Haley).
Melting point: mp in its water of crystn at 111°; mp 769-782°
Toxicity data: LD50 in mice: 600 mg/kg i.p.; 4.5 g/kg orally (Haley)
 
Derivative Type: Sulfate
Molecular Formula: Pr2(SO4)3
Molecular Weight: 570.00
Percent Composition: Pr 49.44%, S 16.88%, O 33.68%
Properties: Light green crystals, prepd by evaporating a soln of the oxide in H2SO4 and cooling the resulting product over phosphorus pentoxide. Several hydrates and double sulfates are known.