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Silicon dioxide acid washed, 1KG

SKU:
18649-1KG
  • $79.80

    • Description

    Silicon dioxide acid washed, 1KG

    Synonym(s):
    Quartz, Silica, Cristobalite, Sand
    Linear Formula:
    SiO2
    CAS Number:
    60676-86-0
    Molecular Weight:
    60.08
    MDL number:
    MFCD00011232
    PubChem Substance ID:
    57647755
    NACRES:
    SB.52

    PROPERTIES

    Quality Level

    100

    form

    solid

    quality

    acid washed

    impurities

    ≤0.01% in acid soluble iron (Fe)
    ≤0.5% soluble in HCl

    loss

    ≤0.5% loss on ignition, 800 °C

    refractive index

    n20/D 1.544 (lit.)

    mp

    1610 °C (lit.)

    density

    2.6 g/mL at 25 °C (lit.)

    anion traces

    chloride (Cl-): ≤100 mg/kg

    SMILES string

    O=[Si]=O

    InChI

    1S/O2Si/c1-3-2

    InChI key

    VYPSYNLAJGMNEJ-UHFFFAOYSA-N

    Silicon dioxide (SiO2) exists in three crystalline forms, namely quartz, tridymite and cristobalite. It reacts with hydrofluoric acid to form silicon tetrafluoride (SiF4) and water. Silicates are formed on reacting SiO2 with alkali melts. SiO2 is the main component in glass, brick and concrete and also forms the insulator in silicon devices. The alteration of the surface of SiO2 with (3-aminopropyl)triethoxysilane (APTES) for binding lactate dehydrogenase (LDH) to form an amino layer has been reported. The silicon-silicon dioxide structure has been investigated at liquid nitrogen temperature by electron spin resonance spectra.

    Application

    Silicon dioxide may be used to produce silicon by electrochemical reduction in the presence of calcium chloride (CaCl2) electrolyte. It may also be used to prepare FeCl3/SiO2, a supported reagentfor the oxidative coupling reactions.

    SAFETY INFORMATION

    Storage Class Code

    13 - Non Combustible Solids

    WGK

    nwg

    Flash Point(F)

    Not applicable

    Flash Point(C)

    Not applicable

    Personal Protective Equipment

    dust mask type N95 (US), Eyeshields, Gloves