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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Identification

Chemical structure
Display Name:
Fumes, silica
EC Number:
273-761-1
EC Name:
Fumes, silica
CAS Number:
69012-64-2
Molecular formula:
SiO2
IUPAC Name:
silanedione

Type of Substance

Composition:
mono-constituent substance
Origin:
inorganic

Substance Identifiers open all close all

  • 69012-64-2
  • Fumed silica
  • Amorphous silica
  • Dow Corning SM Silica Fume Product Number 4070944
  • Elkem Microsilica
  • FeSilur
  • Fesil Microsilica
  • Fumes, silica
  • MICROFUME
  • MICROFUME PELLETS
  • Micro Silica
  • Microblock
  • Microsil
  • Microsilica
  • Microsilica FS
  • Microsilica condensed
  • Microsilica-Sioxid
  • Mivasil
  • RW-Compasil
  • RW-Flusil
  • RW-Füller
  • SIDISTAR
  • SILIMIC
  • Sicersil
  • Silica
  • Silica Fume (SIF-B-T)
  • Silica fume
  • slurry
  • Silica fume, microsilica, condensed SiO2 (silica) fume, amorphous silica, silicon dioxide powder, silica powder, volatilized SiO2, thermally generated silica fume (TGSF), microfume
    (No other type specified)

    Compositions

    Boundary Composition(s) open all close all

    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    Fumes, silica
    EC Number:
    273-761-1
    EC Name:
    Fumes, silica
    CAS Number:
    69012-64-2
    Molecular formula:
    SiO2
    IUPAC Name:
    silanedione

    Characterisation of nanoforms

    Particle size distribution and range

    Particle size distribution and range
    Range of length:
    ca. 150 nm
    Range of lateral dimension 1:
    ca. 150 nm
    Range of lateral dimension 2:
    ca. 150 nm

    Specific surface area

    Range of specific surface area:
    ca. 20 m²/g

    Surface functionalisation / treatment

    Surface treatment applied:
    no

    Legal Entity Composition(s) open all close all

    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    Fumes, silica
    EC Number:
    273-761-1
    EC Name:
    Fumes, silica
    CAS Number:
    69012-64-2
    Molecular formula:
    SiO2
    IUPAC Name:
    silanedione

    Characterisation of nanoforms

    Particle size distribution and range

    Particle size distribution and range
    Range of length:
    ca. 150 nm
    Range of lateral dimension 1:
    ca. 150 nm
    Range of lateral dimension 2:
    ca. 150 nm

    Specific surface area

    Range of specific surface area:
    ca. 20 m²/g

    Surface functionalisation / treatment

    Surface treatment applied:
    no
    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    Fumes, silica
    EC Number:
    273-761-1
    EC Name:
    Fumes, silica
    CAS Number:
    69012-64-2
    Molecular formula:
    SiO2
    IUPAC Name:
    silanedione

    Characterisation of nanoforms

    Type of information reported:
    single nanoform
    This nanoform is covered by a registration:
    yes
    Name of nanoform:
    Silica-fume_spherical-amorphous-OR

    Shape

    Shape description
    Shape category:
    spheroidal
    Shape:
    spherical
    Pure shape:
    yes
    Typical composition:
    ca. 100 %
    Range:
    ca. 100 %

    Particle size distribution and range

    Particle size distribution and range
    Shape category:
    spheroidal
    Percentileopen allclose all
    Percentile:
    D90
    Typical value:
    ca. 87.2 nm
    Range:
    >= 80 - <= 155 nm
    Percentile:
    D50
    Typical value:
    ca. 25.8 nm
    Range:
    >= 20 - <= 47 nm
    Percentile:
    D10
    Typical value:
    ca. 11.9 nm
    Range:
    >= 9 - <= 21 nm
    Fraction of constituent particles in the size range 1-100 nm:
    >= 82 - <= 92 %

    Crystallinity

    Structures
    Structure:
    amorphous
    Pure structure:
    yes
    Typical composition:
    ca. 100 %
    Range:
    ca. 100 %
    Crystal system:
    not applicable

    Specific surface area

    Typical specific surface area:
    ca. 12 m²/g
    Range of specific surface area:
    >= 10.6 - <= 14.2 m²/g
    Skeletal density:
    ca. 2.65 g/cm³

    Surface functionalisation / treatment

    Surface treatment applied:
    no
    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    Fumes, silica
    EC Number:
    273-761-1
    EC Name:
    Fumes, silica
    CAS Number:
    69012-64-2
    Molecular formula:
    SiO2
    IUPAC Name:
    silanedione

    Characterisation of nanoforms

    Type of information reported:
    single nanoform
    This nanoform is covered by a registration:
    yes
    Name of nanoform:
    Silica-fume_spherical-amorphous

    Shape

    Shape description
    Shape category:
    spheroidal
    Shape:
    spherical
    Pure shape:
    yes
    Typical composition:
    ca. 100 %
    Range:
    ca. 100 %

    Particle size distribution and range

    Particle size distribution and range
    Shape category:
    spheroidal
    Percentileopen allclose all
    Percentile:
    D90
    Typical value:
    ca. 87.2 nm
    Range:
    >= 80 - <= 155 nm
    Percentile:
    D50
    Typical value:
    ca. 25.8 nm
    Range:
    >= 20 - <= 47 nm
    Percentile:
    D10
    Typical value:
    ca. 11.9 nm
    Range:
    >= 9 - <= 21 nm
    Fraction of constituent particles in the size range 1-100 nm:
    >= 82 - <= 92 %

    Crystallinity

    Structures
    Structure:
    amorphous
    Pure structure:
    yes
    Typical composition:
    ca. 100 %
    Range:
    ca. 100 %
    Crystal system:
    not applicable

    Specific surface area

    Typical specific surface area:
    ca. 12 m²/g
    Range of specific surface area:
    >= 10.6 - <= 14.2 m²/g
    Skeletal density:
    ca. 2.65 g/cm³

    Surface functionalisation / treatment

    Surface treatment applied:
    no
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Fumes, silica
    EC Number:
    273-761-1
    EC Name:
    Fumes, silica
    CAS Number:
    69012-64-2
    Molecular formula:
    SiO2
    IUPAC Name:
    silanedione
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Fumes, silica
    EC Number:
    273-761-1
    EC Name:
    Fumes, silica
    CAS Number:
    69012-64-2
    Molecular formula:
    SiO2
    IUPAC Name:
    silanedione
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Fumes, silica
    EC Number:
    273-761-1
    EC Name:
    Fumes, silica
    CAS Number:
    69012-64-2
    Molecular formula:
    SiO2
    IUPAC Name:
    silanedione
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Fumes, silica
    EC Number:
    273-761-1
    EC Name:
    Fumes, silica
    CAS Number:
    69012-64-2
    Molecular formula:
    SiO2
    IUPAC Name:
    silanedione
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Fumes, silica
    EC Number:
    273-761-1
    EC Name:
    Fumes, silica
    CAS Number:
    69012-64-2
    Molecular formula:
    SiO2
    IUPAC Name:
    silanedione
    State Form:
    solid: bulk


    Constituent 1
    Chemical structure
    Reference substance name:
    Fumes, silica
    EC Number:
    273-761-1
    EC Name:
    Fumes, silica
    CAS Number:
    69012-64-2
    Molecular formula:
    SiO2
    IUPAC Name:
    silanedione


    Constituent 1
    Chemical structure
    Reference substance name:
    Fumes, silica
    EC Number:
    273-761-1
    EC Name:
    Fumes, silica
    CAS Number:
    69012-64-2
    Molecular formula:
    SiO2
    IUPAC Name:
    silanedione
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Fumes, silica
    EC Number:
    273-761-1
    EC Name:
    Fumes, silica
    CAS Number:
    69012-64-2
    Molecular formula:
    SiO2
    IUPAC Name:
    silanedione
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Fumes, silica
    EC Number:
    273-761-1
    EC Name:
    Fumes, silica
    CAS Number:
    69012-64-2
    Molecular formula:
    SiO2
    IUPAC Name:
    silanedione
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Fumes, silica
    EC Number:
    273-761-1
    EC Name:
    Fumes, silica
    CAS Number:
    69012-64-2
    Molecular formula:
    SiO2
    IUPAC Name:
    silanedione
    State Form:
    solid: bulk


    Constituent 1
    Chemical structure
    Reference substance name:
    Fumes, silica
    EC Number:
    273-761-1
    EC Name:
    Fumes, silica
    CAS Number:
    69012-64-2
    Molecular formula:
    SiO2
    IUPAC Name:
    silanedione


    Constituent 1
    Chemical structure
    Reference substance name:
    Fumes, silica
    EC Number:
    273-761-1
    EC Name:
    Fumes, silica
    CAS Number:
    69012-64-2
    Molecular formula:
    SiO2
    IUPAC Name:
    silanedione


    Constituent 1
    Chemical structure
    Reference substance name:
    Fumes, silica
    EC Number:
    273-761-1
    EC Name:
    Fumes, silica
    CAS Number:
    69012-64-2
    Molecular formula:
    SiO2
    IUPAC Name:
    silanedione


    Constituent 1
    Chemical structure
    Reference substance name:
    Fumes, silica
    EC Number:
    273-761-1
    EC Name:
    Fumes, silica
    CAS Number:
    69012-64-2
    Molecular formula:
    SiO2
    IUPAC Name:
    silanedione