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CAS No 7446-08-4 , selenium dioxide

  • Name: selenium dioxide
  • Synonyms: Selenium(IV) oxide;selenium dioxide; 7446-08-4; Selenious anhydride;SELENIUM DIOXIDE; Oxoselane oxide; Selenium oxide; Selenium oxide (SeO2); Selenium dioxide dimer;
  • CAS Registry Number:
  • Transport: UN 2811/3283
  • Melting Point: 315 ºC
  • Boiling Point: 684.9 °C(lit.)
  • Density: 3.95
  • Water Solubility: 38.4 G/100 ML (14 ºC)
  • Safety Statements: R23/25;R33;R50/53
  • Hazard Symbols: N: Dangerous for the environment;T: Toxic;
  • EINECS: 231-194-7
  • Molecular Weight: 110.9588
  • InchiKey: JPJALAQPGMAKDF-UHFFFAOYSA-N
  • InChI: InChI=1S/O2Se/c1-3-2
  • Risk Statements: S20/21;S28A;S45;S60;S61
  • Molecular Formula: O2Se
  • Molecular Structure:CAS No:7446-08-4 selenium dioxide
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7446-08-4 SELENIUM(IV) OXIDE; 99.8%

  • 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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7446-08-4 Selenium Dioxide

  • selenium dioxide(selenious acid anhydride,selenious anhydride,SeO2:98%-99% MF:SeO2 Molar Mass:110.96g/mol Appearance White crystalline solid Density 395g/cm3,solid Uses:Used as catalyst,the oxidant,chemical reagent,electroplating,metalsurface treatme...
  • Min. Order: 800
  • China Zegen Metals&Chemicals Limited [Manufacturer, Trading Company]
  • Tel: 86-189-74905158
  • Fax: --
  • Address: Lockhar Rd Wan Chai, Hong Kong,HunanChina

7446-08-4 Selenium oxide

  • China Taiyuan RHF CO., ltd. [Manufacturers]
  • Tel: 0351-7436719
  • Fax: +86-351-7436719
  • Address: Shuangta South Alley 46,2-1, YingZe Area,Taiyuan, ShanXi ,ShanXiChina
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7446-08-4 Selenium oxide

  • United States HBCChem, Inc. [Manufacturers]
  • Tel: +1-510-219-6317
  • Fax: +1-510-675-0318
  • Address: Union City,CaliforniaUnited States
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7446-08-4 SELENIUM DIOXIDE

  • Germany CHEMOS GmbH [Manufacturer]
  • Tel: 0049 9402/9336 0
  • Fax: 0049 9402/9336 13
  • Address: CHEMOS GmbH
    Werner-von-Siemensstr. 3
    93128 Regenstauf
    Germany ,Germany
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7446-08-4 Selenium oxide

  • China ORCHID CHEMICAL SUPPLIES LTD (OCS) [Importer/Exporter]
  • Tel: +86-571-85395792
  • Fax: +86-571-85420103
  • Address: 607, North Zhongshan Road, Hangzhou 310000 China ,ZhejiangChina
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7446-08-4 SELENIUM DIOXIDE

  • United States Bromorganics Corporation [Manufacturer]
  • Tel: 847-238-9588
  • Fax: 847-238-9688
  • Address: Bromorganics Corporation
    P. O. Box 722
    Elk Grove Village, Illinois 60009 ,United States
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7446-08-4 Selenium oxide

  • Hong kong ADVANCED TECH. & IND. CO., LTD. [Distributor/Wholesaler]
  • Tel: 86-23902293
  • Fax: 86-27898314
  • Address: UNIT B, 1/F, CHEONG SHING IND. BLDG., 17 WALNUT ST., TAI KOK TSUI, KLN, HONG KONG Hong Kong,nilHong kong
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7446-08-4 SELENIUM OXIDE

  • Germany Cfm Oskar Tropitzsch [Manufacturer]
  • Tel: +49-9231-9619-0
  • Fax: +49-9231-9619-60
  • Address: Cfm Oskar Tropitzsch
    Waldershofer Str. 49-51
    95615 Marktredwitz
    Germany ,Germany
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7446-08-4 SELENIUM(IV) OXIDE, 97% PS

  • Spain Panreac Synthesis [Manufacturer]
  • Tel: +34 937 489 400
  • Fax: +34 937 489 494
  • Address: PANREAC QUIMICA, S.A.U.
    Poligono Plan de la Bruguera. Garraf, 2
    E-08211 Castellar del Vall?s
    Barcelona (Spain) ,Spain
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References of selenium dioxide
Title: Selenium Oxide
CAS Registry Number: 7446-08-4
Synonyms: Selenium dioxide; selenious anhydride
Molecular Formula: O2Se
Molecular Weight: 110.96
Percent Composition: O 28.84%, Se 71.16%
Line Formula: SeO2
Literature References: Prepd by burning selenium in oxygen: Berzelius, Acad. Handl. Stockholm 39, 13 (1818); Ann. Chim. Phys. [2] 9, 160, 225, 337 (1818); by burning selenium in oxygen and nitrogen dioxide: Lenher, J. Am. Chem. Soc. 20, 559 (1898); by oxidizing selenium with nitric acid: A. P. Julien, ibid. 47, 1799 (1925). Toxicology: E. A. Cerwenka, W. C. Cooper, Arch. Environ. Health 3, 189 (1961). Review: Waitkins, Clark, Chem. Rev. 36, 235-289 (1945).
Properties: Lustrous, tetragonal needles. Acidic taste; leaves a burning sensation. Its yellowish green vapor has a pungent, sour smell. mp 340°; d1515 3.954. Vapor pressure (mm Hg): 12.5 at 70°; 20.2 at 94°; 39.0 at 181°; 760.0 at 315°; 848.0 at 320°. nD20 <1.76. Soly (parts/100 parts solvent) in water: 38.4 (14°); in methanol: 10.16 (11.8°); in 93% ethanol: 6.67 (14°); in acetone: 4.35 (15.3°); in acetic acid: 1.11 (13.9°). Sol in concd H2SO4. Stable to light and heat. Rapidly absorbs dry hydrogen fluoride, hydrogen chloride, hydrogen bromide, and hydrogen iodide to form the corresponding selenium oxyhalide. Reacts with ammonia to form nitrogen and selenium; in alcohol soln forms ammonium ethyl selenite, HN4(C2H5)SeO3. Yields nitrogen and black amorphous selenium with hydrazine; nitrogen and reddish-brown amorphous selenium with hydroxylamine hydrochloride. Forms selenic acid with nitric acid. Reduced by carbon and other organic substances.
Melting point: mp 340°
Index of refraction: nD20 <1.76
Density: d1515 3.954
CAUTION: Direct contact may cause intense local irritation of skin and eyes (Cerwenka, Cooper).
Use: In the manuf of other selenium compounds; as a reagent for alkaloids; as oxidizing agent: L. F. Fieser, M. Fieser, Reagents for Organic Chemistry vol. 1 (New York, Wiley, 1967) p 992.