Home > Name List By c > cerium

CAS No 7440-45-1 , cerium

  • Name: cerium
  • Synonyms: (137ce)cerium; (134ce)cerium; (135ce)cerium; 16029-28-0; cerio; (141ce)cerium; (143ce)cerium;(139ce)cerium; 7440-45-1;cerium;
  • CAS Registry Number:
  • Transport: UN 2031 8/PG 2
  • Melting Point: 795 °C(lit.)
  • Boiling Point: 3443 °C(lit.)
  • Density: 6.67 g/mL at 25 °C(lit.)
  • Safety Statements: Cerium resembles aluminum in its pharmacological action as well as in its chemical properties. The insoluble salts such as the oxalates are stated to be nontoxic even in large doses. It is used to prevent vomiting in pregnancy. The average dose is from 0.05 to 0.5 g.

    The effect on the central nervous system of the rare-earth metals following inhalation may preclude welding operations with these materials to any large extent. Cerium is stated to produce polycythemia but is useless in the treatment of anemia owing to its toxic effects. The salts of cerium increase the blood coagulation rate. See also

  • Hazard Symbols: May ignite on heating to 300F (148.9 C). Strong reducing agent.
  • EINECS: 231-154-9
  • Molecular Weight: 140.116
  • InchiKey: GWXLDORMOJMVQZ-UHFFFAOYSA-N
  • InChI: InChI=1S/Ce
  • Risk Statements: 22-23-36/38-36/37/38-20/21/22-11
  • Molecular Formula: Ce
  • Molecular Structure:CAS No:7440-45-1 cerium
Search by region :

Select to

7440-45-1 Cerium, lump, 99,5%

  • Cerium, lump, 99,5%
  • Belgium Alkemi [Manufacturer]
  • Tel: +32 9 340 49 49
  • Fax: +32 9 340 49 47
  • Address: Poststraat, 82 B-9160 Lokeren Belgium ,Belgium
Contact Supplier

7440-45-1 CERIUM FOIL

  • CERIUM FOIL, (99.9% REO) 1.0MM THICK
  • United States INTERNATIONAL LABORATORY LIMITED [Manufacturer]
  • Tel: ( 650 ) 278-9963
  • Fax: ( 650 ) 589-2786
  • Address: 1067 SNEATH LN SAN BRUNO CA 94066, USA SAN BRUNOUNITED STATES SAN BRUNO,United States
Contact Supplier

7440-45-1 Cerium, Metal

Contact Supplier

7440-45-1 Cerium chips

  • Cerium chips, (99.9%REO)
  • United States Strem Chemicals, Inc. [Manufacturer]
  • Tel: (978) 499-1600/ (800) 647-8736
  • Fax: (978) 465-3104
  • Address: 7 Mulliken Way
    Newburyport, MA 01950-4098 ,United States
Contact Supplier

7440-45-1 Cerium

  • United States GFS Chemicals, Inc. [Manufacturer]
  • Tel: 800-858-9682/ 740-881-5501
  • Fax: 740-881-5989
  • Address: GFS Chemicals, Inc.
    P.O. Box 245
    Powell, OH 43065 ,United States
Contact Supplier

7440-45-1 Cerium

Contact Supplier

7440-45-1 Cerium

  • Cerium
  • Germany Fox Chemicals [Manufacturer]
  • Tel: +49-7240-927151
  • Fax: +49-7240-927150
  • Address: Bockstalstr. 10A76327 Pfinztal-Kst.GERMANY Pfinztal-Kst.,Germany
Contact Supplier

7440-45-1 SS-685-2X1/4 CERIUM METAL

Contact Supplier

7440-45-1 (0324) CERIUM

  • Germany Fox Chemicals GmbH [Manufacturer]
  • Tel: +49.7240.927151/ +49.160.95781845 (Mobile)
  • Fax: +49.7240.927150
  • Address: Fox Chemicals GmbH
    Bockstalstr.10 A
    D-76327 Pfinztal-Germany ,Germany
Contact Supplier

7440-45-1 Cerium, Metal

  • 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
Contact Supplier

Select to

References of cerium
Title: Cerium
CAS Registry Number: 7440-45-1
Literature References: Ce; at. wt 140.116; at. no. 58; valences 3, 4. A rare earth metal, most abundant member of the lanthanide series. Naturally occurring isotopes (mass numbers): 140 (88.48%); 142 (11.08%), radioactive, T? >5 ′ 1016 years; 138 (0.25%); 136 (0.19%). Known artificial radioactive isotopes: 124-135; 137; 139; 141; 143-152. Estimated abundance in the earth's crust: 46-66 ppm. Commercially important sources are the rare earth minerals monazite and bastnaesite; also found in cerite. Discovered by Klaproth, Hisinger and Berzelius in 1803. Can be separated from other rare earths by selective precipitation of ceric (4+) salts from buffered solns (pH 3-4); also by ion exchange techniques. Prepn of metal: Spedding et al., Ind. Eng. Chem. 44, 553 (1952). Review 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. (University Park Press, Baltimore, 1972) pp 1-45; Moeller, "The Lanthanides" in Comprehensive Inorganic Chemistry vol. 4, J. C. Bailar, Jr. et al., Eds. (Pergamon Press, Oxford, 1973) pp 1-101; B. T. Kilbourn in Kirk-Othmer Encyclopedia of Chemical Technology vol. 5 (John Wiley & Sons, New York, 4th ed., 1993) pp 728-749; 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: Iron-gray, ductile, malleable metal. Only material known to have a solid-solid critical point. Crystalline forms: face-centered cubic a-form, d 6.770, transforms to b-form at -150°; hexagonal b-form transforms to g-form at -10°; face-centered cubic g-form transforms to d-form at 730°; body-centered cubic d-form exists at >730°. mp 798°. bp 3433°. Heat of fusion: 5.179 kJ/mol. Heat of sublimation (25°): 422.6 kJ/mol. E0(aq) Ce3+/Ce -2.48 V (calc). Stable in dry air, but superficially oxidized in moist air; when finely divided may ignite spontaneously. Slowly dec by cold, rapidly by hot water; sol in dil mineral acids. Ceric salts usually are yellow to orange-red in color and liberate iodine from KI. Cerous salts are usually white and give a white ppt with alkali hydroxides or sulfides, insol in excess of reagent; they also are pptd by ammonium oxalate from cold dil acid sols.
Melting point: mp 798°
Boiling point: bp 3433°
Density: d 6.770
Use: In metallurgy as stabilizers in alloys and as an alternative to thorium oxide in welding electrodes. In glass as polishing agent, decolorizer to stabilize impurities, to render glass opaque to near uv radiation, to resist discoloration from strong light or high energy electron bombardment (as in television screens). In ceramics as an opacifying and strengthening agent. Catalysts to impart high cracking activity for crude oil processing, in automotive exhaust control devices, as combustion additive, polymerization initiator, paint drier, polymer stabilizer. As phosphor in fluorescent lamps, cathode ray tubes and thorium dioxide gas mantles.