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CAS No 7440-54-2 , gadolinium

  • Name: gadolinium
  • Synonyms: 7440-54-2; Gadolinium atomic absorption standard solution; AG-G-70790;gadolinium; GADOLINIUM ATOM; 26413-85-4;(145gd)gadolinium; EINECS 231-162-2;
  • CAS Registry Number:
  • Transport: UN 3208 4.3/PG 3
  • Melting Point: 1313 °C(lit.)
  • Boiling Point: 3273 °C(lit.)
  • Density: 7.886 g/mL at 25 °C(lit.)
  • Safety Statements: S24/25;
  • Hazard Symbols: Xi:Irritant;
  • EINECS: 231-162-2
  • Molecular Weight: 157.25
  • InchiKey: UIWYJDYFSGRHKR-UHFFFAOYSA-N
  • InChI: InChI=1S/Gd
  • Risk Statements: S24/25:Avoidcontactwithskinandeyes.;
  • Molecular Formula: Gd
  • Molecular Structure:CAS No:7440-54-2 gadolinium
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7440-54-2 Gadodiamide

  • Gadodiamide, 99.5%Min
  • China Zeniview Chemistry Technology Co., Ltd. [Manufacturer]
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  • Address: No.05,No.01 Hangzhongmen Dajie, Nanjing, China 210016 Nanjing CHINA 210016 NanjingCHINA Nanjing,China
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7440-54-2 Gadodiamide

  • Gadodiamide, 98%
  • China Suzhou Rovathin Foreign Trade Co.,Ltd [Manufacturer]
  • Tel: 86-512-65816829/ 86-512-61978430
  • Fax: 86-512-65816839
  • Address: Suzhou Rovathin Foreign Trade Co.,Ltd
    (Sales Company of Affiliated Plant in China)
    Room 603, 327 of ShiZi Street,
    Suzhou, Jiangsu, China 215006 ,China
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7440-54-2 GADOLINIUM FOIL. 0.075MM (0.003IN) THICK

  • GADOLINIUM FOIL. 0.075MM (0.003IN) THICK, 99.9% (REO)
  • 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
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7440-54-2 Gadodiamide

  • Gadodiamide, Min 99%
  • China Finechemie Co., Ltd. [Manufacturer]
  • Tel: +86-23-99186710
  • Fax: +86-23-99186729
  • Address: 28th Floor Mordern Building,New-Tech Zone400020 ChongqingCHINA Chongqing,China
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7440-54-2 Gadodiamide

  • Gadodiamide, 99%
  • China Facus Pharmaceutical Co., Ltd. [Manufacturer]
  • Tel: +86-(0)574-62378411
  • Fax: +86-(0)574-62378410
  • Address: 24Fl,Yuanjing Building,Beilun District, Zhejiang 315800 NingboCHINA Ningbo,China
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7440-54-2 Gadolinium powder

  • Gadolinium powder, (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
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7440-54-2 Gadolinium

  • United States GFS Chemicals, Inc. [Manufacturer]
  • Tel: 800-858-9682/ 740-881-5501
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  • Address: GFS Chemicals, Inc.
    P.O. Box 245
    Powell, OH 43065 ,United States
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7440-54-2 G-1000 GADOLINIUM METAL

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7440-54-2 Gadolinium, Metal

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7440-54-2 (0515) GADOLINIUM

  • Germany Fox Chemicals GmbH [Manufacturer]
  • Tel: +49.7240.927151/ +49.160.95781845 (Mobile)
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  • Address: Fox Chemicals GmbH
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References of gadolinium
Title: Gadolinium
CAS Registry Number: 7440-54-2
Literature References: Gd; at. wt 157.25; at. no. 64; valence 3. A lanthanide; belongs to yttrium group of rare earth metals. Naturally occurring isotopes (mass numbers): 152 (0.20%), radioactive, T? 1.08 ′ 1014 years, a-emitter; 154 (2.18%); 155 (14.80%); 156 (20.47%); 157 (15.65%); 158 (24.84%); 160 (21.86%); known artificial radioactive isotopes: 137, 139, 142-151, 153, 159, 161, 162. Abundance in earth's crust: 6.1-6.36 ppm. Sources: samarskite, gadolinite (ytterbite), xenotime, and other rare earth minerals. Discovered by J. C. G. de Marignac in 1880. Prepn of metal: Trombe, Compt. Rend. 200, 459 (1935); idem, Bull. Soc. Chim. Fr. 2, 660 (1935); Klemm, Bommer, Z. Anorg. Chem. 231, 138 (1937). Sepn from other rare earths: F. H. Spedding et al., J. Am. Chem. Soc. 69, 2812 (1947); 76, 2557 (1954). Spectrum: Albertson, Phys. Rev. 47, 370 (1935); Spedding et al., J. Chem. Phys. 5, 33 (1937). Toxicity study: Haley, J. Pharm. Sci. 54, 663 (1965). Reviews of prepn, properties and compds: The Rare Earths, F. H. Spedding, A. H. Daane (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, l971) pp 1-45; T. Moeller, "The Lanthanides" in 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: Colorless or faintly yellowish metal; tarnishes in moist air. Crystalline forms: hexagonal close-packed a-form, d 7.886, transforms to b-form at 1262°; body-centered cubic b-form exists at >1262°. mp 1312°. bp 3273°. Heat of fusion: 10.05 kJ/mol. Heat of sublimation (25°): 397.5 kJ/mol. E°(aq) Gd3+/Gd -2.4 V (calc). Experimental reduction potentials (referred to a normal calomel electrode): -1.810, -1.955 V: Noddack, Brukl, Angew. Chem. 50, 362 (1937).
Melting point: mp 1312°
Boiling point: bp 3273°
Density: d 7.886
 
Derivative Type: Oxide
Synonyms: Gadolinia
Molecular Formula: Gd2O3
Molecular Weight: 362.50
Percent Composition: Gd 86.76%, O 13.24%
Properties: Colorless, hygroscopic powder; prepd by igniting the hydroxide, nitrate, carbonate or oxalate, d15 7.407, absorbs CO2 from the air.
Density: d15 7.407
 
Derivative Type: Hydroxide
Molecular Formula: Gd(OH)3
Molecular Weight: 208.27
Percent Composition: Gd 75.50%, O 23.05%, H 1.45%
Properties: Gelatinous precipitate, prepd by the action of alkali or ammonium hydroxide on a soln of a gadolinium salt. Absorbs CO2 from the air.
 
Derivative Type: Chloride
Molecular Formula: GdCl3
Molecular Weight: 263.61
Percent Composition: Gd 59.65%, Cl 40.35%
Properties: White monoclinic crystals, prepd by heating the oxide with excess of ammonium chloride above 200°. d0 4.52. mp ~609°. Sol in water; forms double salts with platinic and auric chlorides. A hexahydrate, GdCl3.6H2O, deliquesc crystals, d 2.424, is obtained from the aq soln. LD50 in mice (mg/kg): 550 i.p.; >2000 orally (Haley).
Melting point: mp ~609°
Density: d0 4.52; d 2.424
Toxicity data: LD50 in mice (mg/kg): 550 i.p.; >2000 orally (Haley)
 
Derivative Type: Sulfate
Molecular Formula: Gd2(SO4)3
Molecular Weight: 602.69
Percent Composition: Gd 52.18%, S 15.96%, O 31.86%
Properties: Octahydrate, colorless monoclinic crystals. Soly in water decreases with rise in temp. On heating at 400° yields the anhydr sulfate, d 4.139; begins to dec at 500°.
Density: d 4.139
 
Derivative Type: Nitrate
Molecular Formula: Gd(NO3)3
Molecular Weight: 343.26
Percent Composition: Gd 45.81%, N 12.24%, O 41.95%
Properties: Hexahydrate, deliquesc triclinic crystals. d 2.332. mp 91°. Sol in water, in alcohol. A pentahydrate, prismatic crystals, mp 92°, d 2.406, very insol, has been prepd. LD50 (hexahydrate) in rats (mg/kg): 230 i.p.; >5000 orally (Haley).
Melting point: mp 91°; mp 92°
Density: d 2.332; d 2.406
Toxicity data: LD50 (hexahydrate) in rats (mg/kg): 230 i.p.; >5000 orally (Haley)
 
Use: Oxide in control rods of some nuclear power reactors.