Retene

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  • Identifiers

    CAS number
    483-65-8

    Molecular formula
    C18H18

    SMILES
    CC1=C2C=CC3=C(C2=CC=C1)C=CC(=C3)C(C)C

    Safety labels

    Environmental Hazard
    Environmental

  • Odor profile

    Fragrance
    Herbal 48.94%
    Woody 48.51%
    Spicy 46.34%
    Leathery 42.65%
    Earthy 40.59%
    Animal 39.49%
    Phenolic 36.83%
    Green 33.92%
    Floral 29.21%
    Medicinal 28.94%

     

    Flavor
    Medicinal 25.28%
    Camphor 24.4%
    Woody 23.14%
    Bitter 21.84%
    Creosote 20.47%
    Guaiacol 20.42%
    Styrene 20.27%
    Thymol 20.23%
    Very strong 20.11%
    Indole 20.04%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    6.5

    pKa est.
    8.61 (weak base)

    Molecular weight
    234.3 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Melting point expt.

    • 210 °F (NTP, 1992)

    Boiling point

    • 734 to 741 °F at 760 mmHg ; 406 °F at 10 mmHg ; 316-329 °F at 0.2 mmHg (NTP, 1992)

    Flash point

    • 183.4 ˚C est.

    Solubility expt.

    • less than 1 mg/mL at 64 °F (NTP, 1992)

  • Synonyms

    • RETENE
    • 483-65-8
    • 7-Isopropyl-1-methylphenanthrene
    • 1-Methyl-7-isopropylphenanthrene
    • 1-Methyl-7-(1-methylethyl)phenanthrene
    • Phenanthrene, 7-isopropyl-1-methyl-
    • 1-methyl-7-propan-2-ylphenanthrene
    • 0W2D2E1P9Q
    • NSC-26317
    • DTXSID7058701
    • RefChem:178968
    • DTXCID8032388
    • 207-597-9
    • Reten
    • Phenanthrene, 1-methyl-7-(1-methylethyl)-
    • NSC 26317
    • 7-Isopropyl-1-methyl-phenanthrene
    • 1-methyl-7-(propan-2-yl)phenanthrene
    • NCI-C55390
    • CCRIS 3180
    • EINECS 207-597-9
    • UNII-0W2D2E1P9Q
    • AI3-00840
    • Retene 10 microg/mL in Cyclohexane
    • RETENE [MI]
    • SCHEMBL596870
    • orb1695491
    • 1-methyl-7-isopropylphenathrene
    • SCHEMBL29355679
    • SCHEMBL31553088
    • MSK4357
    • WLN: L B666J EY K1
    • Methyl-1-isopropyl-7-phenanthrene
    • NSC26317
    • MFCD00016358
    • AKOS027383435
    • FR67342
    • HY-W717530
    • TS-08783
    • DB-051547
    • CS-0822665
    • NS00008487
    • G71901
    • Q7316667
    • 483-65-8

  • Applications

    Retene (CAS 483-65-8) is a polycyclic aromatic hydrocarbon occurring in pine resins and wood smoke. In practice, it is commonly used as a diagnostic marker in environmental and air-quality analyses to identify wood-smoke or biomass-burning sources, and as a reference standard for GC/MS or HPLC quantification of PAHs in environmental samples. It is also studied as a model PAH compound in resin and forest-product research to characterize pine resin composition and properties, and as a basis for environmental fate, photochemistry, and degradation studies of polycyclic aromatics. In industry and research, retene may appear as a trace component or analytical standard related to PAHs, with use subject to local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 38.28
    methanol 19.56
    isopropanol 18.73
    water 0.01
    ethyl acetate 283.68
    n-propanol 44.14
    acetone 149.46
    n-butanol 45.93
    acetonitrile 32.51
    DMF 282.09
    toluene 480.34
    isobutanol 28.77
    1,4-dioxane 685.33
    methyl acetate 188.67
    THF 841.24
    2-butanone 251.91
    n-pentanol 44.44
    sec-butanol 27.84
    n-hexane 62.85
    ethylene glycol 1.97
    NMP 237.08
    cyclohexane 54.75
    DMSO 64.97
    n-butyl acetate 428.81
    n-octanol 24.99
    chloroform 375.33
    n-propyl acetate 196.86
    acetic acid 20.09
    dichloromethane 575.37
    cyclohexanone 390.51
    propylene glycol 3.79
    isopropyl acetate 215.5
    DMAc 282.82
    2-ethoxyethanol 72.06
    isopentanol 47.4
    n-heptane 39.95
    ethyl formate 54.03
    1,2-dichloroethane 616.74
    n-hexanol 85.36
    2-methoxyethanol 90.15
    isobutyl acetate 200.95
    tetrachloromethane 41.43
    n-pentyl acetate 162.99
    transcutol 526.07
    n-heptanol 32.14
    ethylbenzene 249.94
    MIBK 163.43
    2-propoxyethanol 168.77
    tert-butanol 34.0
    MTBE 242.77
    2-butoxyethanol 70.02
    propionic acid 25.6
    o-xylene 186.09
    formic acid 2.44
    diethyl ether 506.95
    m-xylene 220.28
    p-xylene 236.88
    chlorobenzene 209.12
    dimethyl carbonate 106.9
    n-octane 19.8
    formamide 9.3
    cyclopentanone 423.1
    2-pentanone 236.76
    anisole 388.69
    cyclopentyl methyl ether 407.29
    gamma-butyrolactone 293.52
    1-methoxy-2-propanol 71.48
    pyridine 603.08
    3-pentanone 283.12
    furfural 196.76
    n-dodecane 10.12
    diethylene glycol 47.84
    diisopropyl ether 151.74
    tert-amyl alcohol 42.1
    acetylacetone 287.78
    n-hexadecane 12.57
    acetophenone 231.98
    methyl propionate 225.7
    isopentyl acetate 419.32
    trichloroethylene 823.44
    n-nonanol 30.75
    cyclohexanol 47.62
    benzyl alcohol 88.68
    2-ethylhexanol 83.9
    isooctanol 32.89
    dipropyl ether 373.13
    1,2-dichlorobenzene 186.79
    ethyl lactate 33.84
    propylene carbonate 143.52
    n-methylformamide 43.9
    2-pentanol 31.53
    n-pentane 24.91
    1-propoxy-2-propanol 113.55
    1-methoxy-2-propyl acetate 375.76
    2-(2-methoxypropoxy) propanol 111.69
    mesitylene 130.16
    ε-caprolactone 296.81
    p-cymene 108.18
    epichlorohydrin 573.36
    1,1,1-trichloroethane 264.9
    2-aminoethanol 7.33
    morpholine-4-carbaldehyde 353.87
    sulfolane 212.67
    2,2,4-trimethylpentane 17.56
    2-methyltetrahydrofuran 470.41
    n-hexyl acetate 171.11
    isooctane 15.25
    2-(2-butoxyethoxy)ethanol 139.35
    sec-butyl acetate 196.51
    tert-butyl acetate 286.63
    decalin 54.54
    glycerin 6.2
    diglyme 417.16
    acrylic acid 19.08
    isopropyl myristate 99.72
    n-butyric acid 60.95
    acetyl acetate 148.27
    di(2-ethylhexyl) phthalate 66.2
    ethyl propionate 214.87
    nitromethane 71.59
    1,2-diethoxyethane 639.38
    benzonitrile 102.26
    trioctyl phosphate 38.11
    1-bromopropane 342.55
    gamma-valerolactone 477.41
    n-decanol 25.8
    triethyl phosphate 108.65
    4-methyl-2-pentanol 30.62
    propionitrile 65.03
    vinylene carbonate 123.65
    1,1,2-trichlorotrifluoroethane 106.52
    DMS 243.06
    cumene 137.06
    2-octanol 23.48
    2-hexanone 213.26
    octyl acetate 97.95
    limonene 143.98
    1,2-dimethoxyethane 387.42
    ethyl orthosilicate 119.17
    tributyl phosphate 59.19
    diacetone alcohol 118.58
    N,N-dimethylaniline 250.01
    acrylonitrile 69.91
    aniline 148.98
    1,3-propanediol 19.08
    bromobenzene 308.86
    dibromomethane 356.56
    1,1,2,2-tetrachloroethane 497.94
    2-methyl-cyclohexyl acetate 216.71
    tetrabutyl urea 88.65
    diisobutyl methanol 56.41
    2-phenylethanol 143.97
    styrene 286.89
    dioctyl adipate 132.82
    dimethyl sulfate 112.99
    ethyl butyrate 287.67
    methyl lactate 29.14
    butyl lactate 56.91
    diethyl carbonate 165.86
    propanediol butyl ether 31.72
    triethyl orthoformate 191.6
    p-tert-butyltoluene 110.96
    methyl 4-tert-butylbenzoate 150.31
    morpholine 559.44
    tert-butylamine 30.97
    n-dodecanol 23.23
    dimethoxymethane 373.73
    ethylene carbonate 101.67
    cyrene 93.82
    2-ethoxyethyl acetate 303.18
    2-ethylhexyl acetate 392.96
    1,2,4-trichlorobenzene 220.79
    4-methylpyridine 549.19
    dibutyl ether 201.7
    2,6-dimethyl-4-heptanol 56.41
    DEF 379.86
    dimethyl isosorbide 319.96
    tetrachloroethylene 292.07
    eugenol 111.88
    triacetin 150.47
    span 80 74.34
    1,4-butanediol 7.3
    1,1-dichloroethane 228.93
    2-methyl-1-pentanol 60.74
    methyl formate 35.77
    2-methyl-1-butanol 47.83
    n-decane 18.34
    butyronitrile 74.44
    3,7-dimethyl-1-octanol 45.5
    1-chlorooctane 69.23
    1-chlorotetradecane 33.98
    n-nonane 17.3
    undecane 13.18
    tert-butylcyclohexane 53.78
    cyclooctane 31.68
    cyclopentanol 36.66
    tetrahydropyran 666.08
    tert-amyl methyl ether 197.6
    2,5,8-trioxanonane 248.24
    1-hexene 204.88
    2-isopropoxyethanol 70.75
    2,2,2-trifluoroethanol 7.11
    methyl butyrate 220.58

    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