Silphinene

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  • Identifiers

    CAS number
    74284-57-4

    Molecular formula
    C15H24

    SMILES
    C[C@@H]1CC[C@H]2[C@]13C=CC[C@]3(CC2(C)C)C

    Safety labels

  • Odor profile

    Fragrance
    Woody 84.6%
    Dry 49.42%
    Spicy 47.5%
    Amber 47.29%
    Sweet 39.53%
    Cedar 39.27%
    Vetiver 31.37%
    Sandalwood 31.32%
    Green 30.64%
    Fresh 30.55%

     

    Flavor
    Woody 65.44%
    Sweet 63.17%
    Dry 45.81%
    Camphor 41.38%
    Pine 39.63%
    Wood 38.37%
    Earthy 37.3%
    Fresh 34.71%
    Spicy 32.32%
    Balsam 30.68%

     

    Odor impact est.
    Medium

  • Properties

    XLogP3-AA
    5.2

    pKa est.
    8.66 (weak base)

    Molecular weight
    204.35 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Moderately slow

    Boiling point est.
    249°C

    Flash point

    • 118.43 ˚C est.

  • Synonyms

    • silphinene
    • RefChem:1098541
    • (1R,5S,8R,11R)-5,7,7,11-tetramethyltricyclo(6.3.0.01,5)undec-2-ene
    • (1R,3aR,5aS,8aR)-1,4,4,5a-tetramethyl-1,2,3,3a,5,6-hexahydrocyclopenta(h)pentalene
    • 74284-57-4
    • CHEMBL458374
    • SCHEMBL30103796
    • 74284-57-4

  • Applications

    Silphinene is a sesquiterpene primarily used as an odorant and fragrance ingredient in perfumery and cosmetics, contributing characteristic woody-to-floral notes in blends. It is also employed in household products such as air fresheners and cleaners as a scent additive and may serve as a fragrance intermediate in industrial manufacturing. Additionally, it may be evaluated for limited use as a flavor/aroma ingredient in food processing, subject to regulatory approval and formulation constraints.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 293.26
    methanol 234.66
    isopropanol 276.21
    water 1.79
    ethyl acetate 675.51
    n-propanol 338.4
    acetone 751.58
    n-butanol 360.53
    acetonitrile 531.91
    DMF 655.05
    toluene 1026.78
    isobutanol 287.16
    1,4-dioxane 1270.11
    methyl acetate 575.4
    THF 2775.53
    2-butanone 629.67
    n-pentanol 205.34
    sec-butanol 244.24
    n-hexane 260.19
    ethylene glycol 56.97
    NMP 773.79
    cyclohexane 454.24
    DMSO 365.73
    n-butyl acetate 680.87
    n-octanol 247.05
    chloroform 1165.58
    n-propyl acetate 386.83
    acetic acid 205.18
    dichloromethane 1054.98
    cyclohexanone 1176.4
    propylene glycol 75.92
    isopropyl acetate 595.59
    DMAc 455.98
    2-ethoxyethanol 257.94
    isopentanol 335.88
    n-heptane 251.21
    ethyl formate 329.49
    1,2-dichloroethane 819.48
    n-hexanol 534.89
    2-methoxyethanol 436.09
    isobutyl acetate 368.48
    tetrachloromethane 404.68
    n-pentyl acetate 426.39
    transcutol 599.27
    n-heptanol 270.75
    ethylbenzene 368.39
    MIBK 570.31
    2-propoxyethanol 705.56
    tert-butanol 352.13
    MTBE 662.48
    2-butoxyethanol 370.77
    propionic acid 251.16
    o-xylene 470.37
    formic acid 58.42
    diethyl ether 883.11
    m-xylene 730.11
    p-xylene 429.05
    chlorobenzene 765.82
    dimethyl carbonate 342.01
    n-octane 103.7
    formamide 98.21
    cyclopentanone 1544.99
    2-pentanone 695.27
    anisole 510.4
    cyclopentyl methyl ether 1385.48
    gamma-butyrolactone 1385.85
    1-methoxy-2-propanol 433.5
    pyridine 905.52
    3-pentanone 574.38
    furfural 807.81
    n-dodecane 67.58
    diethylene glycol 339.28
    diisopropyl ether 468.95
    tert-amyl alcohol 260.81
    acetylacetone 720.6
    n-hexadecane 79.84
    acetophenone 380.85
    methyl propionate 575.24
    isopentyl acetate 639.0
    trichloroethylene 1135.05
    n-nonanol 226.66
    cyclohexanol 488.0
    benzyl alcohol 256.69
    2-ethylhexanol 365.07
    isooctanol 232.87
    dipropyl ether 653.15
    1,2-dichlorobenzene 591.45
    ethyl lactate 172.44
    propylene carbonate 677.5
    n-methylformamide 323.08
    2-pentanol 296.77
    n-pentane 279.2
    1-propoxy-2-propanol 519.35
    1-methoxy-2-propyl acetate 665.94
    2-(2-methoxypropoxy) propanol 277.16
    mesitylene 511.17
    ε-caprolactone 890.35
    p-cymene 300.22
    epichlorohydrin 1255.83
    1,1,1-trichloroethane 921.28
    2-aminoethanol 112.39
    morpholine-4-carbaldehyde 709.66
    sulfolane 1080.58
    2,2,4-trimethylpentane 126.48
    2-methyltetrahydrofuran 1485.86
    n-hexyl acetate 534.25
    isooctane 149.62
    2-(2-butoxyethoxy)ethanol 358.94
    sec-butyl acetate 339.24
    tert-butyl acetate 667.15
    decalin 189.89
    glycerin 113.54
    diglyme 694.52
    acrylic acid 195.36
    isopropyl myristate 251.04
    n-butyric acid 404.47
    acetyl acetate 480.67
    di(2-ethylhexyl) phthalate 177.53
    ethyl propionate 401.15
    nitromethane 444.73
    1,2-diethoxyethane 494.86
    benzonitrile 469.42
    trioctyl phosphate 168.74
    1-bromopropane 729.32
    gamma-valerolactone 1266.26
    n-decanol 173.43
    triethyl phosphate 220.31
    4-methyl-2-pentanol 251.04
    propionitrile 520.96
    vinylene carbonate 579.22
    1,1,2-trichlorotrifluoroethane 429.01
    DMS 443.65
    cumene 260.64
    2-octanol 197.72
    2-hexanone 410.01
    octyl acetate 274.95
    limonene 409.52
    1,2-dimethoxyethane 613.47
    ethyl orthosilicate 236.7
    tributyl phosphate 189.3
    diacetone alcohol 432.62
    N,N-dimethylaniline 353.06
    acrylonitrile 505.41
    aniline 515.09
    1,3-propanediol 196.36
    bromobenzene 924.32
    dibromomethane 866.76
    1,1,2,2-tetrachloroethane 775.81
    2-methyl-cyclohexyl acetate 386.17
    tetrabutyl urea 217.54
    diisobutyl methanol 255.24
    2-phenylethanol 432.87
    styrene 413.9
    dioctyl adipate 254.42
    dimethyl sulfate 400.16
    ethyl butyrate 468.4
    methyl lactate 220.65
    butyl lactate 231.43
    diethyl carbonate 288.66
    propanediol butyl ether 215.62
    triethyl orthoformate 348.95
    p-tert-butyltoluene 319.97
    methyl 4-tert-butylbenzoate 418.72
    morpholine 1103.64
    tert-butylamine 310.08
    n-dodecanol 138.9
    dimethoxymethane 912.94
    ethylene carbonate 568.61
    cyrene 278.63
    2-ethoxyethyl acetate 469.47
    2-ethylhexyl acetate 550.87
    1,2,4-trichlorobenzene 600.04
    4-methylpyridine 949.85
    dibutyl ether 399.86
    2,6-dimethyl-4-heptanol 255.24
    DEF 544.17
    dimethyl isosorbide 601.9
    tetrachloroethylene 582.94
    eugenol 310.07
    triacetin 365.11
    span 80 252.94
    1,4-butanediol 81.64
    1,1-dichloroethane 832.21
    2-methyl-1-pentanol 207.43
    methyl formate 323.45
    2-methyl-1-butanol 305.59
    n-decane 116.22
    butyronitrile 566.03
    3,7-dimethyl-1-octanol 251.53
    1-chlorooctane 280.79
    1-chlorotetradecane 129.63
    n-nonane 122.32
    undecane 86.54
    tert-butylcyclohexane 174.48
    cyclooctane 267.41
    cyclopentanol 501.32
    tetrahydropyran 1467.59
    tert-amyl methyl ether 473.54
    2,5,8-trioxanonane 430.69
    1-hexene 395.01
    2-isopropoxyethanol 229.15
    2,2,2-trifluoroethanol 124.65
    methyl butyrate 431.54

    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