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CAS 7631-86-9

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Siliziumdioxid

Beschreibung:
Siliziumdioxid, chemisch bekannt als Siliziumdioxid (SiO2), ist eine natürlich vorkommende Verbindung, die in der Erdkruste reichlich vorhanden ist. Es zeichnet sich durch seine harte, kristalline Struktur aus und kommt häufig in verschiedenen Formen vor, darunter Quarz, Sand und Glas. Siliziumdioxid ist ein farbloser, geruchloser und geschmackloser Feststoff, der in Wasser und den meisten organischen Lösungsmitteln unlöslich ist. Es hat einen hohen Schmelzpunkt und eine ausgezeichnete thermische Stabilität, was es in Hochtemperaturanwendungen nützlich macht. Siliziumdioxid weist eine Reihe von physikalischen Eigenschaften auf, darunter hohe Härte und Sprödigkeit, und es ist ein schlechter Leiter von Elektrizität. Neben seiner geologischen Bedeutung wird Siliziumdioxid in verschiedenen Industrien weit verbreitet, darunter Bauwesen, Elektronik und Lebensmittelproduktion, oft als Füllstoff, Schleifmittel oder Trockenmittel. Es ist auch ein wesentlicher Bestandteil bei der Herstellung von Glas und Keramiken. Obwohl es allgemein als sicher gilt, kann das Einatmen von feinem Siliziumdioxid-Staub Gesundheitsrisiken darstellen und zu Atemproblemen wie Silikose führen.
Formel:O2Si
InChl:InChI=1/O2Si/c1-3-2
InChI Key:InChIKey=VYPSYNLAJGMNEJ-UHFFFAOYSA-N
SMILES:[Si](=O)=O
Synonyme:
  • 03Cal
  • 1085G
  • 10Sv-C5
  • 1135Mp
  • 115Gr
  • 1165Gr
  • 1165Mp
  • 160Mp
  • 165Gr
  • 165Mpj
  • Weitere Synonyme anzeigen
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Produkte pro Seite.114 Produkte.
  • Silicon(IV) oxide, 99.995% (metals basis)

    CAS:
    <p>Silicon(IV) oxide is used in the manufacture of glass for windows, drinking glasses, beverage bottles and many other materials. Optical fibers for telecommunication are made from silica. It is also used as a raw material for many ceramics such as earthenware, stoneware and porcelain. In addition, si</p>
    Formel:O2Si
    Reinheit:99.995%
    Farbe und Form:Crystalline powder, White
    Molekulargewicht:60.08

    Ref: 02-088777

    25g
    171,00€
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    448,00€
  • Silica gel, TLC high purity grade, without binder

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    <p>S.A. 500 to 600m2/g, 60angstrom</p>

    Ref: 02-042756

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  • Silicon(IV) oxide, Amorphous fumed, S.A. 85 to 115m2/g

    CAS:
    <p>S.A. 85 to 115m2/g</p>
    Formel:O2Si
    Molekulargewicht:60.08

    Ref: 02-042737

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  • Silicon(IV) oxide, powder, 1.0 micron, 99.9%

    CAS:
    <p>Silicon(IV) oxide is used in a variety of applications such as manufacturing of glass, ceramics and abrasives, and water filtration. It is a common additive in dentifrice oral care applications and the production of foods, where it is used primarily as an anti-caking and free-flow agent in powdered </p>
    Formel:O2Si
    Reinheit:99.9%
    Farbe und Form:Powder, White
    Molekulargewicht:60.08

    Ref: 02-L16986

    25g
    82,00€
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    271,00€
  • Silica gel 60, with fluorescent indicator, 0.060-0.2mm (70-230 mesh)

    CAS:
    <p>Dry column chromatography without applied pressure (gravity pulled)</p>

    Ref: 02-042757

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    972,00€
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  • Silicagel 60A 20-45 micron

    CAS:
    Formel:O2Si
    Farbe und Form:Solid, White powder
    Molekulargewicht:60.083

    Ref: 10-LC101

    1kg
    65,00€
  • Silicagel 60A 35-70 micron

    CAS:
    <p>LC0205 - Silicagel 60A 35-70 micron</p>
    Formel:O2Si
    Farbe und Form:Solid, White powder
    Molekulargewicht:60.083

    Ref: 10-LC0205

    1kg
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  • Silica gel desiccant, -3+8 Mesh Granules

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    <p>Silica gel desiccant is used to dry the air in industrial compressed air systems. It is also used as a preservation tool to control relative humidity in museum and library exhibitions and storage. Further, it is employed in diagnostic test strips, inhalation devices, syringes, drug test kits and hos</p>
    Formel:O2Si
    Molekulargewicht:60.08

    Ref: 02-044386

    1kg
    85,00€
    5kg
    314,00€
    250g
    38,00€
  • Silica gel, HPLC grade, spherical, 3 micron APS, 260 angstroms, 99.99+%

    CAS:
    <p>Silica gel, HPLC grade, spherical, 3m APS, 260A, 99.99+%</p>
    Reinheit:99.99+%

    Ref: 02-045804

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  • Silica gel, HPLC grade, spherical, 2.2 micron APS, 80 angstroms, 99.99+%

    CAS:
    <p>This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Sci</p>
    Reinheit:99.99+%

    Ref: 02-045797

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  • Silica gel 60, 0.032-0.063mm (230-450 mesh)

    CAS:
    <p>Silica gel is used in column chromatography without applied pressure (gravity pulled). It is used as an adsorbent in various applications and in removing impurities. It is used as stationary base in column chromatography. This Thermo Scientific Chemicals brand product was originally part of the Alf</p>
    Formel:O2Si
    Farbe und Form:White, Powder
    Molekulargewicht:60.08

    Ref: 02-L14003

    1kg
    112,00€
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  • Silicon(IV) oxide, 99.0% (metals basis)

    CAS:
    <p>Silicon(IV) oxide is used in the manufacture of glass for windows, drinking glasses, beverage bottles and many other materials. Optical fibers for telecommunication are made from silica. It is also used as a raw material for many ceramics such as earthenware, stoneware and porcelain. In addition, si</p>
    Formel:O2Si
    Reinheit:99.0%
    Farbe und Form:White, Crystalline powder
    Molekulargewicht:60.08

    Ref: 02-089709

    1kg
    251,00€
    5kg
    667,00€
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  • Silicon(IV) oxide, amorphous fumed, surface treated, S.A. 205-245m2/g

    CAS:
    <p>Coatings, thermal insulation, silicones</p>
    Formel:O2Si
    Molekulargewicht:60.08

    Ref: 02-042782

    1kg
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  • Silicon(IV) oxide, 99.99% (metals basis)

    CAS:
    <p>Silica is used primarily in the production of glass for windows, drinking glasses, beverage bottles. The majority of optical fibers for telecommunication are also made from silica. It is a primary raw material for many ceramics such as earthenware, stoneware, and porcelain. The main ingredient in sa</p>
    Formel:O2Si
    Reinheit:99.99%
    Molekulargewicht:60.08

    Ref: 02-036346

    25g
    107,00€
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  • Silica gel desiccant, indicating, ACS

    CAS:
    <p>Silica gel desiccant is used to dry the air in industrial compressed air systems. It is also used as a preservation tool to control relative humidity in museum and library exhibitions and storage. Further, it is employed in diagnostic test strips, inhalation devices, syringes, drug test kits and hos</p>
    Formel:O2Si
    Molekulargewicht:60.08

    Ref: 02-040381

    100g
    57,00€
    500g
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    2500g
    663,00€
  • Silica Gel 60Å, 70-230mesh (70-200um)

    CAS:
    Formel:SiO2
    Farbe und Form:Solid, White powder
    Molekulargewicht:60.083

    Ref: 10-LC5025

    25kg
    294,00€
  • Silicon(IV) oxide, amorphous fumed, surface treated, S.A. 105-145m2/g

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    <p>Adhesives, coatings, sealants, inks, thermal insulation, silicones to provide hydrophobicity This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product</p>
    Formel:O2Si
    Molekulargewicht:60.08

    Ref: 02-042783

    1kg
    149,00€
    50g
    27,00€
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    56,00€
  • Silicon(IV) oxide, amorphous fumed, S.A. 350-420m2/g

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    <p>Functionalized RAFT agent for controlled radical polymerization; especially suited for the polymerization of styrene; acrylate and acrylamide monomers. Azide group can be used to conjugate to a variety of alkyne-functionalized biomolecules. Chain Transfer Agent (CTA). SDS mixture of sodium alkyl sul</p>
    Formel:O2Si
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    Ref: 02-089376

    1kg
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  • Silicon(IV) oxide, amorphous, nanopowder, 99.9% (metals basis)

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    Formel:O2Si
    Reinheit:99.9%
    Farbe und Form:White to gray, Powder
    Molekulargewicht:60.08

    Ref: 02-044781

    25g
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    100g
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    500g
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  • Silica gel desiccant, indicating, ACS

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    <p>Silica gel desiccant is used to dry the air in industrial compressed air systems. It is also used as a preservation tool to control relative humidity in museum and library exhibitions and storage. Further, it is employed in diagnostic test strips, inhalation devices, syringes, drug test kits and hos</p>
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    Farbe und Form:Granules, 2-5 mm
    Molekulargewicht:60.08

    Ref: 02-036737

    100g
    59,00€
    500g
    157,00€