1,1,1,5,5,5-Hexabutoxy-3-methyl-3-[(tributoxysilyl)oxy]-trisiloxane

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  • Identifiers

    CAS number
    67060-84-8

    Molecular formula
    C37H84O12Si4

    SMILES
    CCCCO[Si](OCCCC)(OCCCC)O[Si](C)(O[Si](OCCCC)(OCCCC)OCCCC)O[Si](OCCCC)(OCCCC)OCCCC

    Safety labels

  • Odor profile

    Fragrance
    Alcoholic 41.93%
    Odorless 34.46%
    Green 32.94%
    Oily 31.16%
    Sweet 28.56%
    Fruity 27.83%
    Herbal 26.61%
    Ethereal 25.97%
    Fermented 25.0%
    Fresh 23.52%

     

    Flavor
    Fruity 52.53%
    Green 47.54%
    Sweet 34.82%
    Fatty 32.64%
    Waxy 31.14%
    Earthy 28.66%
    Tropical 26.99%
    Oily 24.53%
    Vegetable 24.35%
    Wine 23.85%

     

    Odor impact est.
    Low

  • Properties

    pKa est.
    5.7 (weak acid)

    Molecular weight
    833.4 g/mol

    Flash point

    • 203.66 ˚C est.

  • Synonyms

    • SCHEMBL2761917
    • DTXSID201021972
    • 1,1,1,5,5,5-Hexabutoxy-3-methyl-3-[(tributoxysilyl)oxy]-trisiloxane
    • 67060-84-8
    • 67060-84-8

  • Applications

    1,1,1,5,5,5-Hexabutoxy-3-methyl-3-[(tributoxysilyl)oxy]-trisiloxane (CAS 67060-84-8) is primarily used as a silane coupling agent and crosslinking component in silicone- and organosiloxane-based coatings and sealants, where it helps graft segments onto inorganic substrates and integrate into networks to improve adhesion, chemical resistance, and hardness. It also serves as a network-forming crosslinker in silicone resins and UV- or moisture-curing coatings, enabling durable finishes on glass, metal, concrete, and plastics. In adhesives and potting compounds for electronics and automotive applications, it acts as an adhesion promoter and moisture-curing facilitator. As a functional silane building block, it is employed in the synthesis of siloxane resins and modified polymers to tailor surface energy and mechanical properties. It may impart hydrophobicity and water resistance in coatings and surface treatments, and its use is subject to local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 2043.56
    methanol 2017.71
    isopropanol 1689.89
    water 71.06
    ethyl acetate 5355.72
    n-propanol 2381.16
    acetone 5431.87
    n-butanol 2020.74
    acetonitrile 1867.64
    DMF 16172.02
    toluene 4162.42
    isobutanol 1970.54
    1,4-dioxane 3114.64
    methyl acetate 5214.52
    THF 9026.36
    2-butanone 6172.58
    n-pentanol 1338.46
    sec-butanol 2240.75
    n-hexane 331.25
    ethylene glycol 741.51
    NMP 33094.77
    cyclohexane 633.58
    DMSO 9264.24
    n-butyl acetate 3339.97
    n-octanol 938.31
    chloroform 17532.37
    n-propyl acetate 3129.05
    acetic acid 8441.23
    dichloromethane 14360.03
    cyclohexanone 11164.39
    propylene glycol 1690.22
    isopropyl acetate 3981.69
    DMAc 19845.13
    2-ethoxyethanol 2119.95
    isopentanol 1553.41
    n-heptane 259.5
    ethyl formate 3419.29
    1,2-dichloroethane 7841.09
    n-hexanol 1157.71
    2-methoxyethanol 3951.26
    isobutyl acetate 2264.08
    tetrachloromethane 3296.9
    n-pentyl acetate 3794.86
    transcutol 3680.47
    n-heptanol 1084.42
    ethylbenzene 1280.69
    MIBK 2912.29
    2-propoxyethanol 2602.52
    tert-butanol 1765.61
    MTBE 2276.07
    2-butoxyethanol 2482.33
    propionic acid 6047.85
    o-xylene 2530.99
    formic acid 3861.34
    diethyl ether 1979.31
    m-xylene 2453.72
    p-xylene 1805.44
    chlorobenzene 5660.01
    dimethyl carbonate 6096.88
    n-octane 128.89
    formamide 4914.99
    cyclopentanone 15077.4
    2-pentanone 5255.34
    anisole 2145.97
    cyclopentyl methyl ether 6267.99
    gamma-butyrolactone 18754.81
    1-methoxy-2-propanol 3866.99
    pyridine 7693.33
    3-pentanone 5519.41
    furfural 13422.83
    n-dodecane 76.29
    diethylene glycol 1485.57
    diisopropyl ether 872.68
    tert-amyl alcohol 2371.93
    acetylacetone 7053.6
    n-hexadecane 86.81
    acetophenone 3698.44
    methyl propionate 7133.52
    isopentyl acetate 2871.9
    trichloroethylene 22611.52
    n-nonanol 904.79
    cyclohexanol 3292.48
    benzyl alcohol 2134.25
    2-ethylhexanol 946.28
    isooctanol 934.03
    dipropyl ether 1474.85
    1,2-dichlorobenzene 5837.04
    ethyl lactate 2252.52
    propylene carbonate 11165.18
    n-methylformamide 7244.35
    2-pentanol 1710.58
    n-pentane 410.8
    1-propoxy-2-propanol 2315.86
    1-methoxy-2-propyl acetate 4136.48
    2-(2-methoxypropoxy) propanol 1965.94
    mesitylene 1279.91
    ε-caprolactone 11268.28
    p-cymene 829.06
    epichlorohydrin 12925.2
    1,1,1-trichloroethane 10346.76
    2-aminoethanol 1659.8
    morpholine-4-carbaldehyde 12622.53
    sulfolane 27658.63
    2,2,4-trimethylpentane 351.34
    2-methyltetrahydrofuran 7338.12
    n-hexyl acetate 3580.26
    isooctane 167.77
    2-(2-butoxyethoxy)ethanol 2129.65
    sec-butyl acetate 2569.49
    tert-butyl acetate 4103.71
    decalin 292.77
    glycerin 2551.27
    diglyme 4293.92
    acrylic acid 7144.69
    isopropyl myristate 1065.22
    n-butyric acid 6595.27
    acetyl acetate 4872.91
    di(2-ethylhexyl) phthalate 1462.35
    ethyl propionate 3560.85
    nitromethane 13115.9
    1,2-diethoxyethane 1620.79
    benzonitrile 2789.82
    trioctyl phosphate 1146.04
    1-bromopropane 4514.85
    gamma-valerolactone 17640.03
    n-decanol 593.07
    triethyl phosphate 1961.24
    4-methyl-2-pentanol 965.64
    propionitrile 2099.55
    vinylene carbonate 10787.86
    1,1,2-trichlorotrifluoroethane 15347.6
    DMS 4374.53
    cumene 813.86
    2-octanol 859.08
    2-hexanone 2731.85
    octyl acetate 1712.1
    limonene 1362.35
    1,2-dimethoxyethane 2963.45
    ethyl orthosilicate 1695.2
    tributyl phosphate 1397.72
    diacetone alcohol 3878.13
    N,N-dimethylaniline 2118.24
    acrylonitrile 3310.9
    aniline 4160.14
    1,3-propanediol 2034.6
    bromobenzene 6402.42
    dibromomethane 9017.39
    1,1,2,2-tetrachloroethane 17832.52
    2-methyl-cyclohexyl acetate 2422.93
    tetrabutyl urea 2092.46
    diisobutyl methanol 543.23
    2-phenylethanol 1679.82
    styrene 1663.98
    dioctyl adipate 1958.06
    dimethyl sulfate 13842.05
    ethyl butyrate 2820.66
    methyl lactate 4984.92
    butyl lactate 3159.76
    diethyl carbonate 1998.47
    propanediol butyl ether 2113.92
    triethyl orthoformate 2245.88
    p-tert-butyltoluene 879.33
    methyl 4-tert-butylbenzoate 4396.22
    morpholine 5234.69
    tert-butylamine 1104.31
    n-dodecanol 413.3
    dimethoxymethane 5393.45
    ethylene carbonate 7807.58
    cyrene 3399.47
    2-ethoxyethyl acetate 4473.21
    2-ethylhexyl acetate 2643.44
    1,2,4-trichlorobenzene 8504.64
    4-methylpyridine 8724.22
    dibutyl ether 976.21
    2,6-dimethyl-4-heptanol 543.23
    DEF 8399.0
    dimethyl isosorbide 3981.73
    tetrachloroethylene 10028.02
    eugenol 2895.77
    triacetin 5044.28
    span 80 2323.23
    1,4-butanediol 819.37
    1,1-dichloroethane 8174.9
    2-methyl-1-pentanol 1264.17
    methyl formate 5892.02
    2-methyl-1-butanol 2099.26
    n-decane 146.8
    butyronitrile 2028.95
    3,7-dimethyl-1-octanol 806.99
    1-chlorooctane 873.76
    1-chlorotetradecane 284.91
    n-nonane 145.28
    undecane 99.59
    tert-butylcyclohexane 265.18
    cyclooctane 275.81
    cyclopentanol 4148.23
    tetrahydropyran 4601.13
    tert-amyl methyl ether 2913.21
    2,5,8-trioxanonane 2470.99
    1-hexene 954.96
    2-isopropoxyethanol 1566.5
    2,2,2-trifluoroethanol 5678.65
    methyl butyrate 4324.56

    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