Trisilane, 1,1,1,2,2,3,3-heptamethyl-3-(1-naphthalenyl)-

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  • Identifiers

    CAS number
    38446-42-3

    Molecular formula
    C17H28Si3

    SMILES
    C[Si](C)(C)[Si](C)(C)[Si](C)(C)C1=CC=CC2=CC=CC=C21

  • Odor profile

    Fragrance
    Woody 53.6%
    Floral 42.9%
    Dry 33.67%
    Vetiver 32.66%
    Fatty 31.53%
    Green 31.1%
    Earthy 29.13%
    Amber 27.64%
    Herbal 27.53%
    Fresh 27.24%

     

    Flavor
    Camphor 27.42%
    Woody 24.26%
    Mild 20.92%
    Musty 19.89%
    Creosote 18.82%
    Styrene 18.32%
    Green pepper 18.17%
    Syrup 17.78%
    Thymol 17.61%
    Oriental 17.5%

     

    Odor impact est.
    Low

  • Properties

    pKa est.
    -3.55 (strong acid)

    Molecular weight
    316.7 g/mol

    Flash point

    • 135.85 ˚C est.

  • Synonyms

    • Trisilane, 1,1,1,2,2,3,3-heptamethyl-3-(1-naphthalenyl)-
    • 38446-42-3
    • DTXSID60191766
    • DTXCID00114257
    • Trisilane,1,1,1,2,2,3,3-heptamethyl-3-(1-naphthalenyl)-
    • heptamethyl-1-(1-naphthyl)trisilane

  • Applications

    Trisilane, 1,1,1,2,2,3,3-heptamethyl-3-(1-naphthalenyl)- (CAS 38446-42-3) is primarily used as a synthetic intermediate and a silicon-containing crosslinking reagent in specialty formulations. In coatings and inks, it can function as a hydrolysis and condensation crosslinker to form siloxane networks, contributing to improved film hardness, adhesion, and chemical resistance; in polymers and plastics, it serves as a precursor to introduce silane functionality into polymer chains or end groups; in electronics and optoelectronics, it may be evaluated as a precursor for silicon-containing thin films or surface modification via CVD or related processes; and in organic synthesis, it can be used as a specialized intermediate to install silicon-containing moieties. Subject to local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 50.49
    methanol 19.38
    isopropanol 43.58
    water 0.05
    ethyl acetate 323.8
    n-propanol 70.55
    acetone 209.64
    n-butanol 76.31
    acetonitrile 66.71
    DMF 250.51
    toluene 287.99
    isobutanol 48.34
    1,4-dioxane 658.19
    methyl acetate 226.33
    THF 1446.37
    2-butanone 284.22
    n-pentanol 62.7
    sec-butanol 61.06
    n-hexane 46.56
    ethylene glycol 3.98
    NMP 296.52
    cyclohexane 87.05
    DMSO 94.35
    n-butyl acetate 461.34
    n-octanol 88.44
    chloroform 364.49
    n-propyl acetate 249.24
    acetic acid 44.67
    dichloromethane 303.29
    cyclohexanone 460.26
    propylene glycol 11.28
    isopropyl acetate 295.93
    DMAc 270.36
    2-ethoxyethanol 109.2
    isopentanol 69.84
    n-heptane 90.48
    ethyl formate 114.95
    1,2-dichloroethane 255.72
    n-hexanol 148.43
    2-methoxyethanol 111.2
    isobutyl acetate 222.71
    tetrachloromethane 63.42
    n-pentyl acetate 260.91
    transcutol 548.5
    n-heptanol 95.3
    ethylbenzene 168.26
    MIBK 229.56
    2-propoxyethanol 272.28
    tert-butanol 70.91
    MTBE 248.21
    2-butoxyethanol 162.28
    propionic acid 55.34
    o-xylene 155.62
    formic acid 7.75
    diethyl ether 336.56
    m-xylene 215.03
    p-xylene 168.61
    chlorobenzene 255.88
    dimethyl carbonate 135.52
    n-octane 38.31
    formamide 28.28
    cyclopentanone 653.71
    2-pentanone 296.58
    anisole 353.98
    cyclopentyl methyl ether 537.54
    gamma-butyrolactone 522.19
    1-methoxy-2-propanol 123.76
    pyridine 385.53
    3-pentanone 262.79
    furfural 344.58
    n-dodecane 20.88
    diethylene glycol 75.81
    diisopropyl ether 164.7
    tert-amyl alcohol 81.01
    acetylacetone 364.42
    n-hexadecane 24.65
    acetophenone 251.42
    methyl propionate 242.59
    isopentyl acetate 414.84
    trichloroethylene 518.43
    n-nonanol 95.54
    cyclohexanol 98.91
    benzyl alcohol 106.36
    2-ethylhexanol 139.74
    isooctanol 88.58
    dipropyl ether 437.97
    1,2-dichlorobenzene 250.83
    ethyl lactate 73.68
    propylene carbonate 325.57
    n-methylformamide 81.83
    2-pentanol 71.88
    n-pentane 41.59
    1-propoxy-2-propanol 262.36
    1-methoxy-2-propyl acetate 511.79
    2-(2-methoxypropoxy) propanol 195.78
    mesitylene 150.86
    ε-caprolactone 422.73
    p-cymene 155.85
    epichlorohydrin 549.61
    1,1,1-trichloroethane 265.74
    2-aminoethanol 16.74
    morpholine-4-carbaldehyde 451.67
    sulfolane 374.95
    2,2,4-trimethylpentane 28.06
    2-methyltetrahydrofuran 620.62
    n-hexyl acetate 300.52
    isooctane 33.3
    2-(2-butoxyethoxy)ethanol 237.68
    sec-butyl acetate 236.14
    tert-butyl acetate 416.2
    decalin 60.73
    glycerin 16.45
    diglyme 543.22
    acrylic acid 41.68
    isopropyl myristate 158.05
    n-butyric acid 118.95
    acetyl acetate 226.02
    di(2-ethylhexyl) phthalate 97.72
    ethyl propionate 249.27
    nitromethane 152.81
    1,2-diethoxyethane 483.34
    benzonitrile 163.08
    trioctyl phosphate 78.57
    1-bromopropane 199.27
    gamma-valerolactone 706.92
    n-decanol 71.06
    triethyl phosphate 160.69
    4-methyl-2-pentanol 66.11
    propionitrile 101.36
    vinylene carbonate 276.16
    1,1,2-trichlorotrifluoroethane 189.77
    DMS 270.44
    cumene 114.76
    2-octanol 75.24
    2-hexanone 235.23
    octyl acetate 172.65
    limonene 214.12
    1,2-dimethoxyethane 384.08
    ethyl orthosilicate 177.49
    tributyl phosphate 100.29
    diacetone alcohol 206.86
    N,N-dimethylaniline 219.38
    acrylonitrile 100.75
    aniline 151.14
    1,3-propanediol 35.09
    bromobenzene 318.82
    dibromomethane 204.5
    1,1,2,2-tetrachloroethane 378.88
    2-methyl-cyclohexyl acetate 322.96
    tetrabutyl urea 138.21
    diisobutyl methanol 111.99
    2-phenylethanol 192.35
    styrene 177.74
    dioctyl adipate 182.17
    dimethyl sulfate 156.87
    ethyl butyrate 380.96
    methyl lactate 69.43
    butyl lactate 143.2
    diethyl carbonate 228.12
    propanediol butyl ether 91.11
    triethyl orthoformate 316.85
    p-tert-butyltoluene 174.51
    methyl 4-tert-butylbenzoate 272.35
    morpholine 515.41
    tert-butylamine 55.85
    n-dodecanol 55.81
    dimethoxymethane 345.87
    ethylene carbonate 244.47
    cyrene 190.45
    2-ethoxyethyl acetate 375.52
    2-ethylhexyl acetate 398.59
    1,2,4-trichlorobenzene 258.59
    4-methylpyridine 360.67
    dibutyl ether 249.63
    2,6-dimethyl-4-heptanol 111.99
    DEF 273.13
    dimethyl isosorbide 569.88
    tetrachloroethylene 206.49
    eugenol 208.3
    triacetin 272.32
    span 80 167.98
    1,4-butanediol 14.54
    1,1-dichloroethane 211.92
    2-methyl-1-pentanol 67.44
    methyl formate 73.68
    2-methyl-1-butanol 63.05
    n-decane 41.7
    butyronitrile 131.94
    3,7-dimethyl-1-octanol 100.94
    1-chlorooctane 113.8
    1-chlorotetradecane 49.28
    n-nonane 41.18
    undecane 27.84
    tert-butylcyclohexane 61.88
    cyclooctane 56.72
    cyclopentanol 104.57
    tetrahydropyran 632.34
    tert-amyl methyl ether 218.81
    2,5,8-trioxanonane 366.25
    1-hexene 112.18
    2-isopropoxyethanol 104.18
    2,2,2-trifluoroethanol 24.07
    methyl butyrate 260.07

    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