Cyclohexyltrichlorosilane

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  • Identifiers

    CAS number
    98-12-4

    Molecular formula
    C6H11Cl3Si

    SMILES
    C1CCC(CC1)[Si](Cl)(Cl)Cl

    Safety labels

    Corrosive
    Corrosive

  • Odor profile

    Fragrance
    Floral 36.14%
    Sweet 33.23%
    Woody 31.64%
    Balsamic 29.14%
    Odorless 27.89%
    Animal 25.45%
    Mint 23.29%
    Fishy 23.15%
    Clean 22.99%
    Cooling 21.91%

     

    Flavor
    Odorless 24.11%
    Sulfurous 23.78%
    Sulfury 20.04%
    Bouillon 19.7%
    Skunky 19.59%
    Bloody 19.53%
    Alkaline 19.49%
    Glue 19.32%
    Mentholic 19.02%
    Catty 18.71%

     

    Odor impact est.
    Medium

  • Properties

    pKa est.
    5.95 (weak acid)

    Molecular weight
    217.6 g/mol

    Boiling point

    • 206 °C

    Flash point

    • 85.17 ˚C est.
    • 196 °F (NFPA, 2010)
    • 196 °F (91 °C) (open cup)

  • Synonyms

    • CYCLOHEXYLTRICHLOROSILANE
    • 98-12-4
    • Trichloro(cyclohexyl)silane
    • Silane, trichlorocyclohexyl-
    • Trichlorocyclohexylsilane
    • Cyclohexane, (trichlorosilyl)-
    • cyclohexyl trichlorosilane
    • Cyclohexane, 1-(trichlorosilyl)-
    • Trichlorocyclohexyl silane
    • EINECS 202-639-2
    • 3J37567BD2
    • 1-(Trichlorosilyl) cyclohexane
    • DTXSID0059160
    • HSDB 7784
    • (TRICHLOROSILYL)CYCLOHEXANE
    • CYCLOHEXYLTRICHLOROSILANE [HSDB]
    • UNII-3J37567BD2
    • MFCD00021280
    • UN1763
    • Silane, cyclohexyltrichloro-
    • SCHEMBL133902
    • Trichlorocyclohexylsilane, 98%
    • DTXCID3049043
    • AKOS015840731
    • FS-5437
    • UN 1763
    • DB-243317
    • NS00041035
    • CyclohexyltrichlorosilaneTrichlorocyclohexysilane
    • D89321
    • S05225
    • Cyclohexyltrichlorosilane [UN1763] [Corrosive]
    • Q27257278
    • InChI=1/C6H11Cl3Si/c7-10(8,9)6-4-2-1-3-5-6/h6H,1-5H
    • 202-639-2

  • Applications

    Cyclohexyltrichlorosilane (CAS 98-12-4) is primarily used as a silane coupling agent and chemical intermediate. It promotes adhesion between inorganic surfaces and organic polymers in coatings, paints, adhesives, and polymer composites by bonding to hydroxyl groups on the surface and into the polymer matrix. It also serves as a precursor to cyclohexyl-containing siloxane polymers and resins for coatings, sealants, and elastomeric materials, contributing to hydrophobicity and network formation. It is widely used to modify inorganic substrates such as glass and silica to improve wetting and bonding in surface-treatment and primer formulations. In addition, it functions as an intermediate in the synthesis of specialty silanes and functional siloxanes for electronics, optics, inks, and adhesive formulations, enabling controlled crosslinking and adhesion promotion. As a reactive chlorosilane, it can participate in hydrolysis and condensation to form crosslinked Si–O–Si networks in moisture-curing silicone systems.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 77.21
    methanol 53.22
    isopropanol 85.43
    water 0.13
    ethyl acetate 117.36
    n-propanol 87.24
    acetone 207.23
    n-butanol 99.1
    acetonitrile 61.13
    DMF 452.73
    toluene 203.05
    isobutanol 76.19
    1,4-dioxane 288.61
    methyl acetate 118.92
    THF 925.35
    2-butanone 191.72
    n-pentanol 73.67
    sec-butanol 89.06
    n-hexane 13.9
    ethylene glycol 17.48
    NMP 404.66
    cyclohexane 41.43
    DMSO 280.49
    n-butyl acetate 154.75
    n-octanol 82.32
    chloroform 392.77
    n-propyl acetate 106.06
    acetic acid 74.99
    dichloromethane 260.19
    cyclohexanone 375.91
    propylene glycol 40.82
    isopropyl acetate 111.44
    DMAc 275.73
    2-ethoxyethanol 105.53
    isopentanol 90.71
    n-heptane 29.21
    ethyl formate 91.14
    1,2-dichloroethane 198.55
    n-hexanol 119.23
    2-methoxyethanol 174.27
    isobutyl acetate 94.71
    tetrachloromethane 80.94
    n-pentyl acetate 148.73
    transcutol 242.29
    n-heptanol 88.74
    ethylbenzene 84.74
    MIBK 136.73
    2-propoxyethanol 189.5
    tert-butanol 116.67
    MTBE 144.85
    2-butoxyethanol 144.81
    propionic acid 69.1
    o-xylene 117.33
    formic acid 20.23
    diethyl ether 118.62
    m-xylene 134.06
    p-xylene 104.32
    chlorobenzene 202.34
    dimethyl carbonate 85.36
    n-octane 15.27
    formamide 45.23
    cyclopentanone 590.69
    2-pentanone 184.33
    anisole 169.11
    cyclopentyl methyl ether 307.2
    gamma-butyrolactone 439.79
    1-methoxy-2-propanol 171.81
    pyridine 341.29
    3-pentanone 133.77
    furfural 404.62
    n-dodecane 11.93
    diethylene glycol 109.62
    diisopropyl ether 58.97
    tert-amyl alcohol 103.79
    acetylacetone 200.82
    n-hexadecane 13.79
    acetophenone 166.52
    methyl propionate 123.84
    isopentyl acetate 148.52
    trichloroethylene 444.7
    n-nonanol 77.28
    cyclohexanol 152.55
    benzyl alcohol 135.13
    2-ethylhexanol 88.97
    isooctanol 77.18
    dipropyl ether 117.91
    1,2-dichlorobenzene 182.92
    ethyl lactate 61.68
    propylene carbonate 224.52
    n-methylformamide 130.14
    2-pentanol 86.25
    n-pentane 22.14
    1-propoxy-2-propanol 171.04
    1-methoxy-2-propyl acetate 187.24
    2-(2-methoxypropoxy) propanol 123.0
    mesitylene 83.02
    ε-caprolactone 268.93
    p-cymene 80.94
    epichlorohydrin 424.1
    1,1,1-trichloroethane 229.49
    2-aminoethanol 43.94
    morpholine-4-carbaldehyde 371.55
    sulfolane 515.23
    2,2,4-trimethylpentane 17.26
    2-methyltetrahydrofuran 399.5
    n-hexyl acetate 158.13
    isooctane 15.53
    2-(2-butoxyethoxy)ethanol 158.49
    sec-butyl acetate 86.38
    tert-butyl acetate 156.47
    decalin 22.15
    glycerin 57.36
    diglyme 285.85
    acrylic acid 70.35
    isopropyl myristate 77.92
    n-butyric acid 122.05
    acetyl acetate 86.25
    di(2-ethylhexyl) phthalate 76.33
    ethyl propionate 89.34
    nitromethane 143.0
    1,2-diethoxyethane 140.22
    benzonitrile 173.85
    trioctyl phosphate 62.15
    1-bromopropane 131.75
    gamma-valerolactone 550.17
    n-decanol 58.86
    triethyl phosphate 65.89
    4-methyl-2-pentanol 64.51
    propionitrile 84.41
    vinylene carbonate 196.01
    1,1,2-trichlorotrifluoroethane 253.1
    DMS 99.29
    cumene 60.85
    2-octanol 76.25
    2-hexanone 135.07
    octyl acetate 92.34
    limonene 109.31
    1,2-dimethoxyethane 221.23
    ethyl orthosilicate 69.18
    tributyl phosphate 65.47
    diacetone alcohol 171.2
    N,N-dimethylaniline 128.82
    acrylonitrile 112.84
    aniline 173.06
    1,3-propanediol 71.98
    bromobenzene 233.78
    dibromomethane 198.88
    1,1,2,2-tetrachloroethane 370.29
    2-methyl-cyclohexyl acetate 118.53
    tetrabutyl urea 99.66
    diisobutyl methanol 69.16
    2-phenylethanol 157.01
    styrene 110.83
    dioctyl adipate 97.36
    dimethyl sulfate 138.22
    ethyl butyrate 112.24
    methyl lactate 85.25
    butyl lactate 108.25
    diethyl carbonate 69.28
    propanediol butyl ether 134.46
    triethyl orthoformate 97.74
    p-tert-butyltoluene 90.36
    methyl 4-tert-butylbenzoate 164.13
    morpholine 335.67
    tert-butylamine 81.01
    n-dodecanol 46.67
    dimethoxymethane 257.71
    ethylene carbonate 149.99
    cyrene 171.51
    2-ethoxyethyl acetate 168.56
    2-ethylhexyl acetate 129.47
    1,2,4-trichlorobenzene 224.8
    4-methylpyridine 324.05
    dibutyl ether 89.51
    2,6-dimethyl-4-heptanol 69.16
    DEF 183.95
    dimethyl isosorbide 274.62
    tetrachloroethylene 222.27
    eugenol 155.98
    triacetin 132.55
    span 80 136.63
    1,4-butanediol 36.92
    1,1-dichloroethane 198.26
    2-methyl-1-pentanol 72.79
    methyl formate 113.05
    2-methyl-1-butanol 86.98
    n-decane 19.32
    butyronitrile 110.02
    3,7-dimethyl-1-octanol 80.4
    1-chlorooctane 69.26
    1-chlorotetradecane 31.09
    n-nonane 18.1
    undecane 14.64
    tert-butylcyclohexane 20.98
    cyclooctane 20.38
    cyclopentanol 184.38
    tetrahydropyran 321.52
    tert-amyl methyl ether 127.99
    2,5,8-trioxanonane 197.21
    1-hexene 51.04
    2-isopropoxyethanol 91.93
    2,2,2-trifluoroethanol 40.15
    methyl butyrate 122.61

    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