Silicic acid, dimethyl(2-phenylpropyl)silyl ester

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  • Identifiers

    CAS number
    207692-01-1

    Molecular formula
    C11H17O4Si2-3

    SMILES
    CC(C[Si](C)(C)O[Si]([O-])([O-])[O-])C1=CC=CC=C1

    Safety labels

  • Odor profile

    Fragrance
    Floral 58.29%
    Sweet 39.66%
    Rose 35.98%
    Green 31.57%
    Balsamic 30.83%
    Odorless 30.67%
    Fresh 29.14%
    Lily 28.78%
    Muguet 25.52%
    Woody 24.65%

     

    Flavor
    Mild 33.04%
    Odorless 27.44%
    Bland 22.41%
    Yeasty 20.4%
    Bitter 19.5%
    Rose acetate 19.16%
    Delicate 19.0%
    Cedarleaf 18.94%
    Leathery 18.89%
    Clary 18.88%

     

    Odor impact est.
    Medium

  • Properties

    pKa est.
    4.68 (weak acid)

    Molecular weight
    269.42 g/mol

    Flash point

    • 141.55 ˚C est.

  • Synonyms

    • DTXSID501021969
    • Silicic acid, dimethyl(2-phenylpropyl)silyl ester
    • 207692-01-1
    • RefChem:885544
    • DTXCID801506873
    • 606-632-9
    • HVERHTRWJXOMBD-UHFFFAOYSA-N
    • 207692-01-1

  • Applications

    Silicic acid, dimethyl(2-phenylpropyl)silyl ester (CAS 207692-01-1) is primarily used as a reactive silyl-ester intermediate in organosilicon synthesis. It may be employed to introduce the bulky dimethyl(2-phenylpropyl)silyl protecting group onto alcohols or diols, enabling selective transformations in pharmaceutical and fine-chemical workflows. In polymer and coatings chemistry, it can act as a silane-derived coupling or crosslinking precursor, aiding adhesion and network formation in silicone- or siloxane-containing systems. It is commonly considered as a surface-modifying or hydrolytically cleavable siloxane precursor in electronics and optics contexts, enabling controlled hydrolysis and network formation on substrates. In adhesives and sealants, it may serve as a hydrolyzable component that contributes to cure behavior and mechanical properties. As a siloxane-based material precursor, it can be used to prepare advanced polymers and coatings, subject to local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 342.1
    methanol 471.78
    isopropanol 153.13
    water 4.2
    ethyl acetate 100.92
    n-propanol 214.04
    acetone 250.74
    n-butanol 170.02
    acetonitrile 55.45
    DMF 597.19
    toluene 62.88
    isobutanol 96.43
    1,4-dioxane 245.74
    methyl acetate 81.98
    THF 979.09
    2-butanone 140.14
    n-pentanol 98.23
    sec-butanol 120.11
    n-hexane 4.3
    ethylene glycol 133.61
    NMP 446.54
    cyclohexane 8.28
    DMSO 694.78
    n-butyl acetate 75.96
    n-octanol 53.53
    chloroform 110.86
    n-propyl acetate 63.02
    acetic acid 151.43
    dichloromethane 90.93
    cyclohexanone 265.64
    propylene glycol 220.77
    isopropyl acetate 76.11
    DMAc 219.52
    2-ethoxyethanol 218.26
    isopentanol 90.56
    n-heptane 5.4
    ethyl formate 80.7
    1,2-dichloroethane 89.7
    n-hexanol 140.79
    2-methoxyethanol 587.56
    isobutyl acetate 37.55
    tetrachloromethane 13.88
    n-pentyl acetate 66.64
    transcutol 304.39
    n-heptanol 74.25
    ethylbenzene 18.4
    MIBK 99.56
    2-propoxyethanol 350.39
    tert-butanol 138.69
    MTBE 51.86
    2-butoxyethanol 157.55
    propionic acid 128.1
    o-xylene 29.19
    formic acid 155.32
    diethyl ether 95.6
    m-xylene 47.05
    p-xylene 17.7
    chlorobenzene 54.99
    dimethyl carbonate 84.51
    n-octane 2.22
    formamide 291.43
    cyclopentanone 500.97
    2-pentanone 173.57
    anisole 65.33
    cyclopentyl methyl ether 236.87
    gamma-butyrolactone 432.45
    1-methoxy-2-propanol 499.52
    pyridine 160.03
    3-pentanone 88.59
    furfural 290.56
    n-dodecane 1.79
    diethylene glycol 308.0
    diisopropyl ether 24.2
    tert-amyl alcohol 99.89
    acetylacetone 200.99
    n-hexadecane 2.1
    acetophenone 71.8
    methyl propionate 121.83
    isopentyl acetate 59.67
    trichloroethylene 162.35
    n-nonanol 47.59
    cyclohexanol 130.21
    benzyl alcohol 80.13
    2-ethylhexanol 49.3
    isooctanol 46.6
    dipropyl ether 52.59
    1,2-dichlorobenzene 47.22
    ethyl lactate 70.83
    propylene carbonate 174.73
    n-methylformamide 305.12
    2-pentanol 101.28
    n-pentane 6.88
    1-propoxy-2-propanol 207.54
    1-methoxy-2-propyl acetate 141.19
    2-(2-methoxypropoxy) propanol 107.12
    mesitylene 25.49
    ε-caprolactone 202.37
    p-cymene 16.84
    epichlorohydrin 348.28
    1,1,1-trichloroethane 45.59
    2-aminoethanol 255.97
    morpholine-4-carbaldehyde 396.16
    sulfolane 569.53
    2,2,4-trimethylpentane 2.78
    2-methyltetrahydrofuran 276.98
    n-hexyl acetate 83.34
    isooctane 3.21
    2-(2-butoxyethoxy)ethanol 166.36
    sec-butyl acetate 41.7
    tert-butyl acetate 97.72
    decalin 3.33
    glycerin 327.81
    diglyme 238.98
    acrylic acid 118.41
    isopropyl myristate 29.72
    n-butyric acid 164.47
    acetyl acetate 60.72
    di(2-ethylhexyl) phthalate 40.24
    ethyl propionate 56.4
    nitromethane 232.37
    1,2-diethoxyethane 76.64
    benzonitrile 63.96
    trioctyl phosphate 33.44
    1-bromopropane 47.09
    gamma-valerolactone 540.01
    n-decanol 34.39
    triethyl phosphate 30.25
    4-methyl-2-pentanol 51.43
    propionitrile 58.98
    vinylene carbonate 128.46
    1,1,2-trichlorotrifluoroethane 243.47
    DMS 64.18
    cumene 13.28
    2-octanol 43.55
    2-hexanone 76.98
    octyl acetate 43.8
    limonene 25.76
    1,2-dimethoxyethane 203.7
    ethyl orthosilicate 29.17
    tributyl phosphate 32.56
    diacetone alcohol 201.72
    N,N-dimethylaniline 46.12
    acrylonitrile 83.77
    aniline 112.55
    1,3-propanediol 268.09
    bromobenzene 44.57
    dibromomethane 65.91
    1,1,2,2-tetrachloroethane 139.06
    2-methyl-cyclohexyl acetate 57.58
    tetrabutyl urea 50.48
    diisobutyl methanol 28.91
    2-phenylethanol 108.42
    styrene 22.13
    dioctyl adipate 46.81
    dimethyl sulfate 143.06
    ethyl butyrate 53.16
    methyl lactate 149.33
    butyl lactate 82.52
    diethyl carbonate 32.06
    propanediol butyl ether 159.82
    triethyl orthoformate 40.56
    p-tert-butyltoluene 18.95
    methyl 4-tert-butylbenzoate 89.4
    morpholine 401.2
    tert-butylamine 62.76
    n-dodecanol 23.74
    dimethoxymethane 433.8
    ethylene carbonate 108.77
    cyrene 137.75
    2-ethoxyethyl acetate 97.84
    2-ethylhexyl acetate 46.47
    1,2,4-trichlorobenzene 62.35
    4-methylpyridine 139.15
    dibutyl ether 25.37
    2,6-dimethyl-4-heptanol 28.91
    DEF 144.91
    dimethyl isosorbide 190.26
    tetrachloroethylene 86.58
    eugenol 104.66
    triacetin 81.29
    span 80 111.91
    1,4-butanediol 85.58
    1,1-dichloroethane 60.09
    2-methyl-1-pentanol 54.17
    methyl formate 178.3
    2-methyl-1-butanol 86.29
    n-decane 3.0
    butyronitrile 69.88
    3,7-dimethyl-1-octanol 37.82
    1-chlorooctane 17.7
    1-chlorotetradecane 6.9
    n-nonane 2.68
    undecane 2.27
    tert-butylcyclohexane 3.11
    cyclooctane 3.52
    cyclopentanol 216.43
    tetrahydropyran 219.21
    tert-amyl methyl ether 53.51
    2,5,8-trioxanonane 174.31
    1-hexene 18.21
    2-isopropoxyethanol 117.99
    2,2,2-trifluoroethanol 69.85
    methyl butyrate 71.67

    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