Silicic acid, ethyl ester

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  • Identifiers

    CAS number
    11099-06-2

    Molecular formula
    C2H6O3Si

    SMILES
    CCO[Si](=O)O

    Safety labels

    Flammable
    Flammable

    Irritant
    Irritant

    Environmental Hazard
    Environmental

  • Odor profile

    Fragrance
    Odorless 51.21%
    Ethereal 38.96%
    Fruity 35.87%
    Winey 30.09%
    Sour 29.94%
    Sharp 29.0%
    Fresh 26.12%
    Pungent 23.0%
    Green 22.34%
    Apple 21.78%

     

    Flavor
    Fruity 58.56%
    Sharp 39.67%
    Green 38.08%
    Fruit 35.5%
    Sweet 34.62%
    Pungent 32.21%
    Rancid 28.15%
    Tropical 28.06%
    Pineapple 27.77%
    Cheese 26.03%

     

    Odor impact est.
    High

  • Properties

    pKa est.
    10.84 (weak base)

    Molecular weight
    106.15 g/mol

    Flash point

    • 59.51 ˚C est.

  • Synonyms

    • Silicic acid, ethyl ester
    • 11099-06-2
    • RefChem:182991
    • Polysilicic acid, ethyl ester
    • CCRIS 8098
    • DTXCID407731
    • Tetraethyl orthosilicate polymer
    • DTXSID4027731
    • EINECS 234-324-0
    • Silicic acid, tetraethylester polymer
    • 234-324-0
    • ethoxy(oxo)silanol
    • ethoxy-hydroxy-oxosilane
    • Ethyl Silicate-40
    • Ethoxy-hydroxy-oxo-silane
    • ethylmetasilicate
    • C2H6O3Si
    • SCHEMBL35645
    • Di(2-Etetraethyl Orthosilicate
    • JDAIJCNBFIWLJJ-UHFFFAOYSA-N
    • AKOS015909113
    • NS00053744
    • 11099-06-2

  • Applications

    Silicic acid, ethyl ester (CAS 11099-06-2) is principally used as a silica precursor in sol–gel and surface-coating formulations, enabling silica networks that form durable protective coatings on glass, metal, and polymer substrates. It serves as a feedstock for silica in ceramic and glass manufacturing, and is employed in electronics and optics to deposit SiO2 dielectric or barrier layers by CVD/ALD. It can act as a crosslinking agent or inorganic linker in hybrid polymer coatings and adhesives, and is used to synthesize silica nanoparticles for reinforcing polymers and coatings. In addition, it supports formulation of silica sols and gels to improve hardness, chemical resistance, and thermal stability of coatings and sealants.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 418.74
    methanol 622.16
    isopropanol 246.43
    water 147.64
    ethyl acetate 107.81
    n-propanol 226.55
    acetone 267.45
    n-butanol 192.1
    acetonitrile 114.69
    DMF 908.85
    toluene 23.27
    isobutanol 113.03
    1,4-dioxane 328.7
    methyl acetate 110.17
    THF 510.73
    2-butanone 129.72
    n-pentanol 129.01
    sec-butanol 145.56
    n-hexane 5.84
    ethylene glycol 273.24
    NMP 593.15
    cyclohexane 8.93
    DMSO 1099.03
    n-butyl acetate 58.73
    n-octanol 69.59
    chloroform 47.09
    n-propyl acetate 55.22
    acetic acid 397.65
    dichloromethane 67.36
    cyclohexanone 200.31
    propylene glycol 208.51
    isopropyl acetate 71.18
    DMAc 336.77
    2-ethoxyethanol 325.02
    isopentanol 119.46
    n-heptane 7.67
    ethyl formate 130.63
    1,2-dichloroethane 78.39
    n-hexanol 103.5
    2-methoxyethanol 736.11
    isobutyl acetate 24.16
    tetrachloromethane 12.35
    n-pentyl acetate 67.75
    transcutol 399.24
    n-heptanol 77.38
    ethylbenzene 11.68
    MIBK 76.17
    2-propoxyethanol 278.24
    tert-butanol 245.41
    MTBE 78.84
    2-butoxyethanol 182.35
    propionic acid 183.9
    o-xylene 22.67
    formic acid 471.32
    diethyl ether 111.74
    m-xylene 23.59
    p-xylene 13.0
    chlorobenzene 37.02
    dimethyl carbonate 67.01
    n-octane 4.18
    formamide 676.0
    cyclopentanone 301.04
    2-pentanone 142.81
    anisole 63.15
    cyclopentyl methyl ether 157.86
    gamma-butyrolactone 373.93
    1-methoxy-2-propanol 477.68
    pyridine 147.54
    3-pentanone 76.5
    furfural 414.76
    n-dodecane 3.81
    diethylene glycol 314.62
    diisopropyl ether 27.78
    tert-amyl alcohol 149.09
    acetylacetone 181.6
    n-hexadecane 4.18
    acetophenone 67.73
    methyl propionate 110.63
    isopentyl acetate 45.07
    trichloroethylene 99.41
    n-nonanol 62.66
    cyclohexanol 138.98
    benzyl alcohol 87.1
    2-ethylhexanol 45.72
    isooctanol 52.44
    dipropyl ether 45.77
    1,2-dichlorobenzene 39.35
    ethyl lactate 60.09
    propylene carbonate 145.39
    n-methylformamide 483.53
    2-pentanol 119.31
    n-pentane 9.41
    1-propoxy-2-propanol 170.79
    1-methoxy-2-propyl acetate 94.05
    2-(2-methoxypropoxy) propanol 124.1
    mesitylene 19.61
    ε-caprolactone 190.82
    p-cymene 14.34
    epichlorohydrin 294.04
    1,1,1-trichloroethane 32.84
    2-aminoethanol 326.53
    morpholine-4-carbaldehyde 564.13
    sulfolane 565.18
    2,2,4-trimethylpentane 4.0
    2-methyltetrahydrofuran 246.86
    n-hexyl acetate 85.5
    isooctane 3.86
    2-(2-butoxyethoxy)ethanol 212.21
    sec-butyl acetate 33.51
    tert-butyl acetate 89.26
    decalin 4.31
    glycerin 388.71
    diglyme 304.08
    acrylic acid 207.09
    isopropyl myristate 34.19
    n-butyric acid 200.2
    acetyl acetate 64.66
    di(2-ethylhexyl) phthalate 42.36
    ethyl propionate 52.06
    nitromethane 517.55
    1,2-diethoxyethane 101.23
    benzonitrile 67.16
    trioctyl phosphate 35.9
    1-bromopropane 31.96
    gamma-valerolactone 519.99
    n-decanol 48.39
    triethyl phosphate 28.21
    4-methyl-2-pentanol 57.19
    propionitrile 69.07
    vinylene carbonate 137.86
    1,1,2-trichlorotrifluoroethane 240.55
    DMS 58.55
    cumene 10.85
    2-octanol 52.56
    2-hexanone 63.85
    octyl acetate 51.03
    limonene 22.57
    1,2-dimethoxyethane 317.93
    ethyl orthosilicate 27.08
    tributyl phosphate 36.24
    diacetone alcohol 188.76
    N,N-dimethylaniline 48.08
    acrylonitrile 109.9
    aniline 87.65
    1,3-propanediol 435.71
    bromobenzene 23.67
    dibromomethane 41.28
    1,1,2,2-tetrachloroethane 93.54
    2-methyl-cyclohexyl acetate 41.46
    tetrabutyl urea 58.36
    diisobutyl methanol 29.94
    2-phenylethanol 78.86
    styrene 15.36
    dioctyl adipate 52.31
    dimethyl sulfate 151.82
    ethyl butyrate 45.92
    methyl lactate 137.6
    butyl lactate 75.71
    diethyl carbonate 28.51
    propanediol butyl ether 165.63
    triethyl orthoformate 36.56
    p-tert-butyltoluene 16.1
    methyl 4-tert-butylbenzoate 97.83
    morpholine 442.72
    tert-butylamine 106.95
    n-dodecanol 35.96
    dimethoxymethane 356.63
    ethylene carbonate 102.94
    cyrene 137.0
    2-ethoxyethyl acetate 99.16
    2-ethylhexyl acetate 33.91
    1,2,4-trichlorobenzene 49.95
    4-methylpyridine 127.08
    dibutyl ether 40.45
    2,6-dimethyl-4-heptanol 29.94
    DEF 210.28
    dimethyl isosorbide 192.81
    tetrachloroethylene 72.48
    eugenol 121.57
    triacetin 76.01
    span 80 135.42
    1,4-butanediol 161.64
    1,1-dichloroethane 40.37
    2-methyl-1-pentanol 78.22
    methyl formate 291.98
    2-methyl-1-butanol 100.62
    n-decane 5.77
    butyronitrile 83.73
    3,7-dimethyl-1-octanol 46.57
    1-chlorooctane 22.53
    1-chlorotetradecane 10.57
    n-nonane 5.32
    undecane 4.57
    tert-butylcyclohexane 4.18
    cyclooctane 4.62
    cyclopentanol 212.45
    tetrahydropyran 180.32
    tert-amyl methyl ether 69.45
    2,5,8-trioxanonane 241.95
    1-hexene 17.01
    2-isopropoxyethanol 160.97
    2,2,2-trifluoroethanol 166.55
    methyl butyrate 74.68

    Scent© AI

1 4

IFRA standard 51

Recommendation
No restriction
Maximum acceptable concentrations in the finished product (%)
Category 1
Products applied to the lips
 No restriction Category 7A
Rinse-off products applied to the hair with some hand contact
 No restriction
Category 2
Products applied to the axillae
 No restriction Category 7B
Leave-on products applied to the hair with some hand contact
 No restriction
Category 3
Products applied to the face/body using fingertips
 No restriction Category 8
Products with significant anogenital exposure
 No restriction
Category 4
Products related to fine fragrance
 No restriction Category 9
Products with body and hand exposure, primarily rinse off
 No restriction
Category 5A
Body lotion products applied to the body using the hands (palms), primarily leave on
 No restriction Category 10A
Household care products with mostly hand contact
 No restriction
Category 5B
Face moisturizer products applied to the face using the hands (palms), primarily leave on
 No restriction Category 10B
Household care products with mostly hand contact, including aerosol/spray products (with potential leave-on skin contact)
 No restriction
Category 5C
Hand cream products applied to the hands using the hands (palms), primarily leave on
 No restriction Category 11A
Products with intended skin contact but minimal transfer of fragrance to skin from inert substrate without UV exposure
 No restriction
Category 5D
Baby Creams, baby Oils and baby talc
 No restriction Category 11B
Products with intended skin contact but minimal transfer of fragrance to skin from inert substrate with potential UV exposure
 No restriction
Category 6
Products with oral and lip exposure
 No restriction Category 12
Products not intended for direct skin contact, minimal or insignificant transfer to skin
 No restriction