2-Ethylnaphthalene

Overview IFRA Request a quote

  • Identifiers

    CAS number
    939-27-5

    Molecular formula
    C12H12

    SMILES
    CCC1=CC2=CC=CC=C2C=C1

    Safety labels

    Environmental Hazard
    Environmental

  • Odor profile

    Fragrance
    Herbal 44.79%
    Sweet 44.04%
    Woody 43.8%
    Earthy 42.87%
    Spicy 41.36%
    Green 38.44%
    Phenolic 37.84%
    Anisic 35.91%
    Leathery 34.13%
    Animal 33.66%

     

    Flavor
    Plastic 32.37%
    Geranium 29.03%
    Gasoline 27.95%
    Pungent 27.47%
    Phenolic 25.98%
    Medicinal 25.59%
    Tar 25.49%
    Tarry 24.96%
    Guaiacol 24.42%
    Naphthyl 23.33%

     

    Odor impact est.
    Medium

  • Properties

    XLogP3-AA
    4.4

    pKa est.
    7.37 (neutral)

    Molecular weight
    156.22 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Slow

    Melting point expt.

    • 18.7 °F (NTP, 1992)

    Boiling point

    • 496 °F at 760 mmHg (NTP, 1992)

    Flash point

    • 110.48 ˚C est.
    • 220 °F (NTP, 1992)

  • Synonyms

    • 2-ETHYLNAPHTHALENE
    • 939-27-5
    • Naphthalene, 2-ethyl-
    • beta-Ethylnaphthalene
    • EINECS 213-360-0
    • NSC 59389
    • DTXSID9061330
    • Bethyl naphthalene
    • betaEthylnaphthalene
    • Ethylnaphthalene, 2
    • Naphthalene, 2ethyl
    • RefChem:472018
    • B-ETHYL NAPTHALENE
    • NAPTHALENE, 2-ETHYL
    • DTXCID1048887
    • 213-360-0
    • .beta.-Ethylnaphthalene
    • MFCD00004127
    • 2-Ethyl-naphthalene
    • CHEMBL370944
    • NSC-59389
    • NSC59389
    • Naphthalene, 2-ethyl
    • SCHEMBL26213
    • SCHEMBL66042
    • SCHEMBL66086
    • SCHEMBL73386
    • 2-Ethylnaphthalene, >=99%
    • SCHEMBL455936
    • SCHEMBL457224
    • orb3023633
    • QR6992R4PR
    • SCHEMBL1369929
    • SCHEMBL1371504
    • SCHEMBL1560784
    • SCHEMBL4950178
    • SCHEMBL5748073
    • SCHEMBL7841028
    • WLN: L66J C2
    • SCHEMBL16096678
    • SCHEMBL19279518
    • SCHEMBL31534025
    • RJTJVVYSTUQWNI-UHFFFAOYSA-
    • BDBM50159278
    • MFCD00084376
    • SBB061449
    • AKOS015912895
    • MSK165787-100H
    • AS-56938
    • SY051582
    • DB-057450
    • CS-0152501
    • E0147
    • NS00039769
    • ST51047462
    • D83899
    • 2-Ethylnaphthalene Solution in Hexane, 100ug/mL
    • F549665
    • InChI=1/C12H12/c1-2-10-7-8-11-5-3-4-6-12(11)9-10/h3-9H,2H2,1H3
    • 939-27-5

  • Applications

    2-Ethylnaphthalene (CAS 939-27-5) is mainly used as an organic building block in the synthesis of naphthalene-derived compounds. It is commonly oxidized to 2-naphthoic acid, a key precursor for dyes, pigments, and specialty chemicals; it also provides a route to various naphthalene derivatives used in polymer additives and coatings formulations. In research and development, it serves as a non-polar aryl substrate for functionalization and coupling studies. Depending on formulation and local regulations, it may also be used as a processing solvent or diluent in certain industrial streams.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 165.96
    methanol 74.69
    isopropanol 89.78
    water 0.01
    ethyl acetate 1222.46
    n-propanol 166.31
    acetone 901.47
    n-butanol 158.06
    acetonitrile 535.7
    DMF 654.74
    toluene 1290.61
    isobutanol 101.95
    1,4-dioxane 1948.7
    methyl acetate 835.09
    THF 1937.45
    2-butanone 1047.64
    n-pentanol 137.37
    sec-butanol 115.09
    n-hexane 383.58
    ethylene glycol 9.57
    NMP 476.4
    cyclohexane 355.1
    DMSO 378.32
    n-butyl acetate 2274.26
    n-octanol 141.3
    chloroform 1769.7
    n-propyl acetate 811.86
    acetic acid 111.41
    dichloromethane 3075.43
    cyclohexanone 1314.35
    propylene glycol 13.53
    isopropyl acetate 572.42
    DMAc 454.06
    2-ethoxyethanol 168.71
    isopentanol 139.63
    n-heptane 388.88
    ethyl formate 403.91
    1,2-dichloroethane 2594.57
    n-hexanol 370.88
    2-methoxyethanol 219.2
    isobutyl acetate 569.71
    tetrachloromethane 320.41
    n-pentyl acetate 574.08
    transcutol 1273.53
    n-heptanol 126.71
    ethylbenzene 723.11
    MIBK 436.52
    2-propoxyethanol 414.32
    tert-butanol 139.56
    MTBE 542.3
    2-butoxyethanol 176.7
    propionic acid 131.33
    o-xylene 474.06
    formic acid 10.16
    diethyl ether 1552.23
    m-xylene 560.32
    p-xylene 644.31
    chlorobenzene 841.9
    dimethyl carbonate 314.9
    n-octane 128.28
    formamide 42.01
    cyclopentanone 1310.73
    2-pentanone 873.98
    anisole 953.11
    cyclopentyl methyl ether 960.43
    gamma-butyrolactone 1138.26
    1-methoxy-2-propanol 158.94
    pyridine 1964.18
    3-pentanone 935.6
    furfural 665.98
    n-dodecane 68.01
    diethylene glycol 110.93
    diisopropyl ether 364.45
    tert-amyl alcohol 127.8
    acetylacetone 803.8
    n-hexadecane 83.83
    acetophenone 576.16
    methyl propionate 727.18
    isopentyl acetate 1488.32
    trichloroethylene 3167.89
    n-nonanol 136.91
    cyclohexanol 180.55
    benzyl alcohol 214.77
    2-ethylhexanol 395.17
    isooctanol 119.11
    dipropyl ether 1754.51
    1,2-dichlorobenzene 641.81
    ethyl lactate 99.81
    propylene carbonate 601.7
    n-methylformamide 191.54
    2-pentanol 113.72
    n-pentane 149.2
    1-propoxy-2-propanol 369.39
    1-methoxy-2-propyl acetate 872.6
    2-(2-methoxypropoxy) propanol 233.03
    mesitylene 311.66
    ε-caprolactone 971.73
    p-cymene 377.69
    epichlorohydrin 1810.28
    1,1,1-trichloroethane 1413.78
    2-aminoethanol 24.54
    morpholine-4-carbaldehyde 670.71
    sulfolane 706.78
    2,2,4-trimethylpentane 56.53
    2-methyltetrahydrofuran 1428.48
    n-hexyl acetate 676.68
    isooctane 51.56
    2-(2-butoxyethoxy)ethanol 312.91
    sec-butyl acetate 509.53
    tert-butyl acetate 591.1
    decalin 186.3
    glycerin 19.59
    diglyme 1019.66
    acrylic acid 101.26
    isopropyl myristate 297.06
    n-butyric acid 259.14
    acetyl acetate 565.71
    di(2-ethylhexyl) phthalate 158.46
    ethyl propionate 725.57
    nitromethane 424.8
    1,2-diethoxyethane 2000.39
    benzonitrile 491.19
    trioctyl phosphate 108.79
    1-bromopropane 1472.75
    gamma-valerolactone 1128.48
    n-decanol 109.6
    triethyl phosphate 281.15
    4-methyl-2-pentanol 81.21
    propionitrile 523.78
    vinylene carbonate 544.03
    1,1,2-trichlorotrifluoroethane 285.45
    DMS 608.03
    cumene 342.9
    2-octanol 102.29
    2-hexanone 775.78
    octyl acetate 312.58
    limonene 564.62
    1,2-dimethoxyethane 1046.93
    ethyl orthosilicate 291.07
    tributyl phosphate 178.98
    diacetone alcohol 251.11
    N,N-dimethylaniline 471.22
    acrylonitrile 529.95
    aniline 400.76
    1,3-propanediol 55.42
    bromobenzene 1268.91
    dibromomethane 2006.68
    1,1,2,2-tetrachloroethane 1685.28
    2-methyl-cyclohexyl acetate 559.57
    tetrabutyl urea 261.61
    diisobutyl methanol 225.62
    2-phenylethanol 386.16
    styrene 922.67
    dioctyl adipate 355.59
    dimethyl sulfate 277.5
    ethyl butyrate 1376.74
    methyl lactate 75.29
    butyl lactate 154.15
    diethyl carbonate 714.77
    propanediol butyl ether 87.01
    triethyl orthoformate 652.33
    p-tert-butyltoluene 326.91
    methyl 4-tert-butylbenzoate 326.53
    morpholine 1428.15
    tert-butylamine 128.85
    n-dodecanol 96.4
    dimethoxymethane 814.28
    ethylene carbonate 504.64
    cyrene 171.11
    2-ethoxyethyl acetate 760.08
    2-ethylhexyl acetate 1397.77
    1,2,4-trichlorobenzene 657.85
    4-methylpyridine 1555.48
    dibutyl ether 958.56
    2,6-dimethyl-4-heptanol 225.62
    DEF 883.97
    dimethyl isosorbide 641.28
    tetrachloroethylene 1120.19
    eugenol 241.03
    triacetin 398.97
    span 80 180.25
    1,4-butanediol 21.09
    1,1-dichloroethane 1452.32
    2-methyl-1-pentanol 148.25
    methyl formate 198.39
    2-methyl-1-butanol 131.59
    n-decane 120.22
    butyronitrile 522.08
    3,7-dimethyl-1-octanol 180.14
    1-chlorooctane 379.64
    1-chlorotetradecane 151.75
    n-nonane 136.03
    undecane 87.97
    tert-butylcyclohexane 155.57
    cyclooctane 172.82
    cyclopentanol 152.48
    tetrahydropyran 1972.41
    tert-amyl methyl ether 420.28
    2,5,8-trioxanonane 556.93
    1-hexene 949.41
    2-isopropoxyethanol 156.89
    2,2,2-trifluoroethanol 31.68
    methyl butyrate 866.67

    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