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CAS 7631-86-9

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Silica

Description:
Silica, chemically known as silicon dioxide (SiO2), is a naturally occurring compound that is abundant in the Earth's crust. It is characterized by its hard, crystalline structure and is commonly found in various forms, including quartz, sand, and glass. Silica is a colorless, odorless, and tasteless solid that is insoluble in water and most organic solvents. It has a high melting point and excellent thermal stability, making it useful in high-temperature applications. Silica exhibits a range of physical properties, including high hardness and brittleness, and it is a poor conductor of electricity. In addition to its geological significance, silica is widely used in various industries, including construction, electronics, and food production, often as a filler, abrasive, or desiccant. It is also an essential component in the manufacture of glass and ceramics. While generally considered safe, inhalation of fine silica dust can pose health risks, leading to respiratory issues such as silicosis.
Formula:O2Si
InChI:InChI=1/O2Si/c1-3-2
InChI key:InChIKey=VYPSYNLAJGMNEJ-UHFFFAOYSA-N
SMILES:[Si](=O)=O
Synonyms:
  • 03Cal
  • 1085G
  • 10Sv-C5
  • 1135Mp
  • 115Gr
  • 1165Gr
  • 1165Mp
  • 160Mp
  • 165Gr
  • 165Mpj
  • See more synonyms
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products per page.Found 114 products.
  • 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>
    Formula:O2Si
    Purity:99.995%
    Color and Shape:Crystalline powder, White
    Molecular weight:60.08

    Ref: 02-088777

    25g
    171.00€
    100g
    448.00€
  • Silica gel, TLC high purity grade, without binder

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

    Ref: 02-042756

    1kg
    To inquire
    5kg
    To inquire
    250g
    To inquire
  • Silicon(IV) oxide, Amorphous fumed, S.A. 85 to 115m2/g

    CAS:
    <p>S.A. 85 to 115m2/g</p>
    Formula:O2Si
    Molecular weight:60.08

    Ref: 02-042737

    1kg
    To inquire
    50g
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    250g
    To inquire
  • 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>
    Formula:O2Si
    Purity:99.9%
    Color and Shape:Powder, White
    Molecular weight:60.08

    Ref: 02-L16986

    25g
    82.00€
    100g
    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

    1kg
    To inquire
    50g
    To inquire
    5kg
    972.00€
    250g
    101.00€
  • Silicagel 60A 20-45 micron

    CAS:
    Formula:O2Si
    Color and Shape:Solid, White powder
    Molecular weight:60.083

    Ref: 10-LC101

    1kg
    65.00€
  • Silicagel 60A 35-70 micron

    CAS:
    <p>LC0205 - Silicagel 60A 35-70 micron</p>
    Formula:O2Si
    Color and Shape:Solid, White powder
    Molecular weight:60.083

    Ref: 10-LC0205

    1kg
    64.00€
  • Silica gel desiccant, -3+8 Mesh Granules

    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>
    Formula:O2Si
    Molecular weight: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>
    Purity:99.99+%

    Ref: 02-045804

    1g
    To inquire
    5g
    To inquire
  • 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>
    Purity:99.99+%

    Ref: 02-045797

    1g
    To inquire
    5g
    To inquire
  • 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>
    Formula:O2Si
    Color and Shape:White, Powder
    Molecular weight:60.08

    Ref: 02-L14003

    1kg
    112.00€
    500g
    66.00€
    2500g
    To inquire
  • 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>
    Formula:O2Si
    Purity:99.0%
    Color and Shape:White, Crystalline powder
    Molecular weight:60.08

    Ref: 02-089709

    1kg
    251.00€
    5kg
    667.00€
    250g
    102.00€
  • Silicon(IV) oxide, amorphous fumed, surface treated, S.A. 205-245m2/g

    CAS:
    <p>Coatings, thermal insulation, silicones</p>
    Formula:O2Si
    Molecular weight:60.08

    Ref: 02-042782

    1kg
    175.00€
    50g
    To inquire
    250g
    To inquire
  • 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>
    Formula:O2Si
    Purity:99.99%
    Molecular weight:60.08

    Ref: 02-036346

    25g
    107.00€
    100g
    To inquire
  • 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>
    Formula:O2Si
    Molecular weight:60.08

    Ref: 02-040381

    100g
    57.00€
    500g
    168.00€
    2500g
    663.00€
  • Silica Gel 60Å, 70-230mesh (70-200um)

    CAS:
    Formula:SiO2
    Color and Shape:Solid, White powder
    Molecular weight:60.083

    Ref: 10-LC5025

    25kg
    294.00€
  • Silicon(IV) oxide, amorphous fumed, surface treated, S.A. 105-145m2/g

    CAS:
    <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>
    Formula:O2Si
    Molecular weight:60.08

    Ref: 02-042783

    1kg
    149.00€
    50g
    27.00€
    250g
    56.00€
  • Silicon(IV) oxide, amorphous fumed, S.A. 350-420m2/g

    CAS:
    <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>
    Formula:O2Si
    Molecular weight:60.08

    Ref: 02-089376

    1kg
    242.00€
    50g
    41.00€
    250g
    To inquire
  • Silicon(IV) oxide, amorphous, nanopowder, 99.9% (metals basis)

    CAS:
    <p>Silicon(IV) oxide is used as sodium aluminate stabilizer. It is also used as SDS mixture of sodium alkyl sulfates consisting chiefly of sodium lauryl sulfate. It is also acts as chain transfer agent in polymerization. This Thermo Scientific Chemicals brand product was originally part of the Alfa Aes</p>
    Formula:O2Si
    Purity:99.9%
    Color and Shape:White to gray, Powder
    Molecular weight:60.08

    Ref: 02-044781

    25g
    81.00€
    100g
    216.00€
    500g
    To inquire
  • 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>
    Formula:O2Si
    Color and Shape:Granules, 2-5 mm
    Molecular weight:60.08

    Ref: 02-036737

    100g
    59.00€
    500g
    157.00€