Home > Name List By h > hafnium

CAS No 7440-58-6 , hafnium

  • Name: hafnium
  • Synonyms: Hafnium;hafnium; UN2545; UN1326; EINECS 231-166-4; HSDB 552; elemental;Celtium; Hafnium and compounds; (184hf)hafnium;
  • CAS Registry Number:
  • Transport: UN 3178 4
  • Density: 13,31 g/cm3
  • Safety Statements: R26/27/28:Verytoxicbyinhalation,incontactwithskinandifswallowed.;R35:Causessevereburns.;
  • Hazard Symbols: T+:Verytoxic;
  • EINECS: 231-166-4
  • Molecular Weight: 178.49
  • InchiKey: VBJZVLUMGGDVMO-UHFFFAOYSA-N
  • InChI: InChI=1S/Hf
  • Risk Statements: S26:Incaseofcontactwitheyes,rinseimmediatelywithplentyofwaterandseekmedicaladvice.;S36/37:Wearsuitableprotectiveclothingandgloves.;S45:Incaseofaccidentofifyoufeelunwell,seekmedicaladviceimmediately(showthelabelwherepossible).;S7/9:Keepcontainertightlyclosedandinawell-ventilatedplace.;
  • Molecular Formula: Hf
  • Molecular Structure:CAS No:7440-58-6 hafnium
Search by region :

Select to

7440-58-6 Hafnium, plate, 6,5 mm x 25 mm x 25 mm, 99,5%

  • Hafnium, plate, 6,5 mm x 25 mm x 25 mm, 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

7440-58-6 Hafnium atomic absorption standard solution

  • Hafnium atomic absorption standard solution Hafnium electrodes Hafnium Hafnium Metal HAFNIUM CRYSTAL BAR CHIPS HAFNIUM POWDER HAFNIUM WIRE HAFNIUM CRYSTAL BAR HAFNIUM FOIL HAFNIUM TURNINGS CRYSTAL BAR Hafniumplatemmxmmxmm
  • 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

7440-58-6 Hafnium crystal bar chips

  • Hafnium crystal bar chips, (99.7%)
  • 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

7440-58-6 Hafnium

  • 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

7440-58-6 Hafnium

Contact Supplier

7440-58-6 (0574) HAFNIUM

  • 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

7440-58-6 Hafnium

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

7440-58-6 HAFNIUM, CRYSTAL BAR

  • United States ProChem, Inc. [Manufacturer]
  • Tel: 800-795-8788
  • Address: ProChem, Inc.
    826 Roosevelt Rd.
    Rockford IL 61109 ,United States
Contact Supplier

7440-58-6 Hafnium atomic absorption standard solution

  • 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

7440-58-6 SS-212-2X1/8 HAFNIUM

Contact Supplier

Select to

References of hafnium
Title: Hafnium
CAS Registry Number: 7440-58-6
Literature References: Hf; at. wt 178.49; at. no. 72; valences 4; also 2, 3. Group IVB (4). Six naturally occurring isotopes: 180 (35.22%); 178 (27.1%); 177 (18.56%); 179 (13.75%); 176 (5.21%); 174 (0.163%; a-emitter, T? 2 ′ 1015 years); artificial isotopes: 157; 158; 168-173; 175; 181-183. Abundance in earth's crust: 5 ppm. Found in all zirconium-contg minerals. Discovered in 1923 by Coster and Hevesy: Nature 111, 79 (1923). Extraction from the mineral cyrtolite: Larsen et al., Inorg. Synth. 3, 67 (1950). Prepd by thermal decompn of its iodide; by reduction of the tetrachloride or of the hydrofluohafniate with metallic sodium; by reduction of the oxide with a mixture of calcium and sodium: van Arkel, de Boer, Z. Anorg. Chem. 148, 345 (1925); de Boer, Fast, ibid. 187, 193 (1930); US 2741628. Spectra: Coster et al., cited by Mellor, A Comprehensive Treatise on Inorganic and Theoretical Chemistry 7, 170 (1930). A dibromide and tribromide have been prepd: Schumb, Morehouse, J. Am. Chem. Soc. 69, 2696 (1947). Reviews of hafnium and its compds: Larsen, "Zirconium and Hafnium Chemistry" in Adv. Inorg. Chem. Radiochem. 13, 1-133 (1970); Bradley, Thornton, "Zirconium and Hafnium" in Comprehensive Inorganic Chemistry vol. 3, J. C. Bailar, Jr. et al., Eds. (Pergamon Press, Oxford, 1973) pp 419-490; R. H. Nielson in Kirk-Othmer Encyclopedia of Chemical Technology vol. 12 (Wiley-Interscience, New York, 3rd ed., 1980) pp 67-80.
Properties: Highly lustrous, ductile metal of hexagonal cryst structure. mp 2227°; d 13.3. Resembles zirconium and thorium.
Melting point: mp 2227°
Density: d 13.3
 
Derivative Type: Dioxide
Molecular Formula: HfO2
Molecular Weight: 210.49
Percent Composition: Hf 84.80%, O 15.20%
Properties: Obtained by igniting the hydroxide, the oxalate, or the sulfate. d20 9.68. mp 2774°.
Melting point: mp 2774°
Density: d20 9.68
 
Derivative Type: Tetrachloride
Molecular Formula: HfCl4
Molecular Weight: 320.30
Percent Composition: Hf 55.73%, Cl 44.27%
Properties: White cryst mass, obtained by heating the oxide in the presence of chlorine and a reducing agent. Hydrolyzed to hafnyl chloride, HfOCl2, by water. Volatilizes appreciably at 250°.
 
Derivative Type: Sulfate
Molecular Formula: Hf(SO4)2
Molecular Weight: 370.62
Percent Composition: Hf 48.16%, S 17.30%, O 34.54%
Properties: Prepd by the action of fuming sulfuric acid on the tetrachloride, dec above 500°.
 
CAUTION: Potential symptoms of overexposure to hafnium in exptl animals are irritation of eyes, skin, mucous membranes; liver damage. See NIOSH Pocket Guide to Chemical Hazards (DHHS/NIOSH 97-140, 1997) p 156.