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CAS No 7631-86-9 , dioxosilane

  • Name: dioxosilane
  • Synonyms: Infusorial earth; SILICON DIOXIDE;Quartz;dioxosilane; Sand; Cristobalite; Silicic anhydride; Dioxosilane; Diatomaceous earth;
  • CAS Registry Number:
  • Melting Point: 1610 ºC
  • Flash Point: n/a
  • Boiling Point: >100 °C(lit.)
  • Density: 2.6
  • Refractive index: 1.46
  • Safety Statements: R36/37
  • Hazard Symbols: Xi: Irritant;
  • HS Code: 28112200
  • Flash Point: n/a
  • EINECS: 231-545-4
  • Molecular Weight: 60.0843
  • InchiKey: VYPSYNLAJGMNEJ-UHFFFAOYSA-N
  • InChI: InChI=1S/O2Si/c1-3-2
  • Risk Statements: S26;S37/39
  • Molecular Formula: O2Si
  • Molecular Structure:CAS No:7631-86-9 dioxosilane
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7631-86-9 Amorphous silica

  • China Xi’an Origin Herb tech Co., Ltd [Manufacturers]
  • Tel: 86-29-88391632
  • Fax: 86-29-88396671
  • Address: C7B402, FengYeXinDuShi, High-tech Development Zone, Xi’an 710075 China. XI'AN,SHAANXIChina
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7631-86-9 Amorphous silica

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7631-86-9 Amorphous silica

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7631-86-9 Amorphous silica

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7631-86-9 Amorphous silica

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7631-86-9 Amorphous silica

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7631-86-9 SILICON OXIDE NANOPOWDER

  • Germany PlasmaChem GmbH [Manufacturer]
  • Tel: +49 30 6392 6313/ +49 176/201-448-75
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  • Address: PlasmaChem GmbH
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    D-12489 Berlin
    Germany ,Germany
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7631-86-9 SILICON DIOXIDE

  • Canada L.V. Lomas Limited [Manufacturer]
  • Tel: 800-575-3382/ 905-458-1555
  • Fax: 905-458-0722
  • Address: 99 Summerlea Road
    Brampton ON Canada L6T 4V2 ,Canada
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7631-86-9 SILICON DIOXIDE

  • United States SILVER FERN CHEMICAL [Manufacturer]
  • Tel: 206-282-3376
  • Fax: 206-282-0105
  • Address: Silver Fern Chemical
    2226 Queen Anne Avenue North
    Seattle, WA 98109 ,United States
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7631-86-9 silica dioxide

  • China HUNAN LIFA CHEMICALS CO., LTD. [Manufacturers]
  • Tel: +86-732-3584999
  • Fax: +86-731-53584788
  • Address: Zhubugang,Yuetang District ,Xiangtan City Hunan Province P.R.China Xiangtan,HunanChina
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References of dioxosilane
Title: Silicon Dioxide
CAS Registry Number: 7631-86-9
CAS Name: Silica
Synonyms: silicic anhydride
Molecular Formula: O2Si
Molecular Weight: 60.08
Percent Composition: O 53.26%, Si 46.75%
Line Formula: SiO2
Literature References: Occurs in nature as agate, amethyst, chalcedony, cristobalite, flint, quartz, sand, tridymite. Reviews: Kirk-Othmer Encyclopedia of Chemical Technology vol. 18 (Interscience, New York, 2nd ed., 1969) pp 46-111; Rochow in Comprehensive Inorganic Chemistry vol. 1, J. C. Bailar, Jr. et al., Eds. (Pergamon Press, Oxford, 1973) pp 1388-1402. Toxicology: L. T. Fairhall, Industrial Toxicology (Hafner, New York, 1969) pp 105-107.
Properties: Transparent, tasteless crystals, or amorphous powder. d (amorphous) 2.2. d0 (quartz) 2.65. Melts to a glass. Silica has the lowest coefficient of expansion by heat of any known substance. It is practically insol in water or acids, except hydrofluoric acid in which it readily dissolves forming the gas silicon tetrafluoride; it is also slowly attacked by heating with concd phosphoric acid. The crystallized forms of silica are scarcely attacked by alkalies, while the amorphous is sol, especially when finely divided. See also Infusorial Earth.
Density: d (amorphous) 2.2; d0 (quartz) 2.65
CAUTION: Potential symptom of overexposure to amorphous silica are eye irritation and pneumoconiosis. Potential symptoms of overexposure to crystalline silica as respirable dust are cough, dyspnea, wheezing; decreased pulmonary function, progressive respiratory symptoms (silicosis). See NIOSH Pocket Guide to Chemical Hazards (DHHS/NIOSH 97-140, 1997) p 276-279. Crystalline silica (respirable size), primarily quartz dusts occurring in industrial and occupational settings, is listed as a known human carcinogen: Report on Carcinogens, Eleventh Edition (PB2005-104914, 2004) p III-231.
Use: Manuf glass, water glass, refractories, abrasives, ceramics, enamels; decolorizing and purifying oils, petroleum products, etc.; in scouring- and grinding-compounds, ferrosilicon, molds for castings; as anticaking and defoaming agent.