Isopentyl trimethoxycinnamate trisiloxane

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  • Identifiers

    CAS number
    170637-72-6

    Molecular formula
    C24H44O7Si3

    SMILES
    CC(CCOC(=O)/C=C/C1=CC(=C(C(=C1)OC)OC)OC)C[Si](C)(O[Si](C)(C)C)O[Si](C)(C)C

    Safety labels

  • Odor profile

    Fragrance
    Floral 48.71%
    Odorless 36.97%
    Woody 28.66%
    Fruity 27.74%
    Sweet 27.58%
    Fresh 25.89%
    Musk 24.4%
    Powdery 23.78%
    Mint 22.28%
    Dry 22.03%

     

    Flavor
    Bitter 50.27%
    Fruity 35.75%
    Mild 25.76%
    Bland 20.86%
    Heather 20.75%
    Green 20.63%
    Broom 20.53%
    Light 20.36%
    Genet 20.25%
    Old wood 20.01%

     

    Odor impact est.
    Low

  • Properties

    pKa est.
    7.81 (neutral)

    Molecular weight
    528.9 g/mol

    Flash point

    • 150.51 ˚C est.

  • Synonyms

    • Sunshelter SP
    • isopentyl trimethoxycinnamate trisiloxane
    • U4087152TE
    • UNII-U4087152TE
    • 170637-72-6
    • Isopentyl trimethoxycinnamate trisiloxane [INCI]
    • 2-Propenoic acid, 3-(3,4,5-trimethoxyphenyl)-, 3-methyl-4-(1,3,3,3-tetramethyl-1-((trimethylsilyl)oxy)-1-disiloxanyl)butyl ester
    • SCHEMBL527317
    • Q27290655
    • 170637-72-6

  • Applications

    Isopentyl trimethoxycinnamate trisiloxane (CAS 170637-72-6) is an organosilicon cinnamate ester that can function as a UV-absorbing component and a silicone-compatible additive in formulation. Practical applications under consideration include: (1) UV filtering in cosmetics and personal care products based on silicones, (2) UV stabilization and processing-ability improvement in silicone coatings, paints, and adhesives, (3) UV stabilizer for polymers and plastics to enhance light-aging resistance, (4) an intermediate or additive in silicone-related polymer and adhesive manufacture, (5) protective coatings for electronic devices and related printing substrates. Use is subject to local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 44.2
    methanol 54.78
    isopropanol 23.42
    water 0.41
    ethyl acetate 44.76
    n-propanol 44.57
    acetone 69.53
    n-butanol 34.9
    acetonitrile 30.33
    DMF 139.96
    toluene 27.88
    isobutanol 29.87
    1,4-dioxane 75.83
    methyl acetate 43.7
    THF 243.1
    2-butanone 69.12
    n-pentanol 36.85
    sec-butanol 30.09
    n-hexane 3.8
    ethylene glycol 9.71
    NMP 248.02
    cyclohexane 7.16
    DMSO 133.87
    n-butyl acetate 43.71
    n-octanol 30.46
    chloroform 164.82
    n-propyl acetate 48.58
    acetic acid 69.6
    dichloromethane 154.52
    cyclohexanone 131.16
    propylene glycol 24.18
    isopropyl acetate 32.17
    DMAc 173.55
    2-ethoxyethanol 73.1
    isopentanol 25.54
    n-heptane 4.69
    ethyl formate 47.15
    1,2-dichloroethane 76.27
    n-hexanol 31.15
    2-methoxyethanol 85.69
    isobutyl acetate 35.47
    tetrachloromethane 19.86
    n-pentyl acetate 60.46
    transcutol 121.24
    n-heptanol 28.41
    ethylbenzene 16.22
    MIBK 36.18
    2-propoxyethanol 79.4
    tert-butanol 22.84
    MTBE 22.98
    2-butoxyethanol 59.88
    propionic acid 47.16
    o-xylene 16.58
    formic acid 33.81
    diethyl ether 29.86
    m-xylene 17.13
    p-xylene 20.29
    chlorobenzene 46.85
    dimethyl carbonate 32.31
    n-octane 2.74
    formamide 47.48
    cyclopentanone 180.14
    2-pentanone 57.14
    anisole 44.45
    cyclopentyl methyl ether 76.64
    gamma-butyrolactone 192.1
    1-methoxy-2-propanol 73.07
    pyridine 96.14
    3-pentanone 47.73
    furfural 152.1
    n-dodecane 2.3
    diethylene glycol 45.93
    diisopropyl ether 9.05
    tert-amyl alcohol 28.22
    acetylacetone 66.57
    n-hexadecane 2.57
    acetophenone 58.13
    methyl propionate 52.52
    isopentyl acetate 37.1
    trichloroethylene 152.48
    n-nonanol 30.83
    cyclohexanol 41.99
    benzyl alcohol 48.31
    2-ethylhexanol 23.76
    isooctanol 24.24
    dipropyl ether 33.08
    1,2-dichlorobenzene 46.55
    ethyl lactate 36.23
    propylene carbonate 98.68
    n-methylformamide 68.3
    2-pentanol 19.77
    n-pentane 3.39
    1-propoxy-2-propanol 62.35
    1-methoxy-2-propyl acetate 56.95
    2-(2-methoxypropoxy) propanol 60.03
    mesitylene 10.21
    ε-caprolactone 121.87
    p-cymene 14.14
    epichlorohydrin 166.68
    1,1,1-trichloroethane 55.19
    2-aminoethanol 30.5
    morpholine-4-carbaldehyde 161.37
    sulfolane 243.46
    2,2,4-trimethylpentane 2.31
    2-methyltetrahydrofuran 108.69
    n-hexyl acetate 62.98
    isooctane 1.29
    2-(2-butoxyethoxy)ethanol 76.17
    sec-butyl acetate 30.79
    tert-butyl acetate 36.53
    decalin 4.48
    glycerin 36.64
    diglyme 108.98
    acrylic acid 45.34
    isopropyl myristate 25.04
    n-butyric acid 59.27
    acetyl acetate 32.83
    di(2-ethylhexyl) phthalate 36.68
    ethyl propionate 40.54
    nitromethane 104.19
    1,2-diethoxyethane 49.05
    benzonitrile 47.42
    trioctyl phosphate 24.99
    1-bromopropane 40.75
    gamma-valerolactone 227.36
    n-decanol 21.61
    triethyl phosphate 26.71
    4-methyl-2-pentanol 12.91
    propionitrile 31.39
    vinylene carbonate 91.88
    1,1,2-trichlorotrifluoroethane 140.69
    DMS 38.89
    cumene 11.83
    2-octanol 21.46
    2-hexanone 56.91
    octyl acetate 36.42
    limonene 20.46
    1,2-dimethoxyethane 97.24
    ethyl orthosilicate 26.09
    tributyl phosphate 27.63
    diacetone alcohol 50.27
    N,N-dimethylaniline 36.01
    acrylonitrile 40.94
    aniline 38.4
    1,3-propanediol 35.9
    bromobenzene 46.59
    dibromomethane 92.3
    1,1,2,2-tetrachloroethane 128.59
    2-methyl-cyclohexyl acetate 46.74
    tetrabutyl urea 44.64
    diisobutyl methanol 12.06
    2-phenylethanol 45.14
    styrene 20.07
    dioctyl adipate 44.73
    dimethyl sulfate 62.18
    ethyl butyrate 41.67
    methyl lactate 45.93
    butyl lactate 55.26
    diethyl carbonate 26.35
    propanediol butyl ether 64.54
    triethyl orthoformate 36.3
    p-tert-butyltoluene 13.03
    methyl 4-tert-butylbenzoate 66.54
    morpholine 105.77
    tert-butylamine 12.69
    n-dodecanol 15.65
    dimethoxymethane 93.1
    ethylene carbonate 71.67
    cyrene 95.24
    2-ethoxyethyl acetate 72.54
    2-ethylhexyl acetate 34.37
    1,2,4-trichlorobenzene 59.84
    4-methylpyridine 79.39
    dibutyl ether 28.02
    2,6-dimethyl-4-heptanol 12.06
    DEF 71.57
    dimethyl isosorbide 112.01
    tetrachloroethylene 78.06
    eugenol 64.97
    triacetin 74.85
    span 80 64.23
    1,4-butanediol 23.08
    1,1-dichloroethane 54.45
    2-methyl-1-pentanol 30.8
    methyl formate 53.8
    2-methyl-1-butanol 31.01
    n-decane 4.42
    butyronitrile 34.92
    3,7-dimethyl-1-octanol 23.87
    1-chlorooctane 18.75
    1-chlorotetradecane 7.47
    n-nonane 3.85
    undecane 3.06
    tert-butylcyclohexane 3.46
    cyclooctane 2.64
    cyclopentanol 58.28
    tetrahydropyran 84.57
    tert-amyl methyl ether 26.24
    2,5,8-trioxanonane 84.91
    1-hexene 14.61
    2-isopropoxyethanol 50.96
    2,2,2-trifluoroethanol 30.89
    methyl butyrate 53.16

    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