1,2,3,4-Tetrahydroquinoline

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  • Identifiers

    CAS number
    635-46-1

    Molecular formula
    C9H11N

    SMILES
    C1CC2=CC=CC=C2NC1

    Safety labels

    Irritant
    Irritant

  • Odor profile

    Animal 72.44%
    Sweet 50.94%
    Phenolic 46.23%
    Fishy 38.88%
    Honey 36.81%
    Musty 34.72%
    Earthy 31.55%
    Cheesy 30.99%
    Floral 30.08%
    Leathery 29.39%

    Scent© AI

  • Properties

    XLogP3-AA
    2.3

    pKa est.
    5.54 (weak acid)

    Molecular weight
    133.19 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Moderately slow

    Boiling point est.
    242°C

    Flash point est.
    106.93 ˚C

  • Synonyms

    • 1,2,3,4-Tetrahydroquinoline
    • 635-46-1
    • Tetrahydroquinoline
    • Kusol
    • 1,2,3,4-Tetrahydro-quinoline
    • Quinoline, 1,2,3,4-tetrahydro-
    • 1,2,3,4-Hydroquinoline
    • MFCD00006693
    • 1,2,3,4-Tetrahydrochinoline
    • UNII-CCR50N1Z9G
    • CCR50N1Z9G
    • 25448-04-8
    • CHEBI:213323
    • EINECS 211-237-6
    • NSC 15311
    • NSC-15311
    • 1,2,3,4tetrahydroquinoline
    • AI3-10034
    • DTXSID8060903
    • 1,2,3,4-Tetrahydroquinoline; 3,4-Dihydro-2H-quinoline; Kusol; NSC 15311; THQ
    • 1,2,3,4-tetrahydro quinoline
    • 1,2,3,4,-Tetrahydroquinoline
    • 1,3,4-Tetrahydroquinoline
    • 3,4-dihydro-2H-quinoline
    • SCHEMBL18172
    • 1,2,3,4-tetrahydoquinoline
    • 1,2,3,4-tetrahydroquinolin
    • 1,2,3,4 tetrahydroquinoline
    • CHEMBL303611
    • 1, 2,3,4-tetrahydroquinoline
    • 1,2,3,4- tetrahydroquinoline
    • 1,2,3,4-tetra hydroquinoline
    • 1,2,3, 4-Tetrahydroquinoline
    • DTXCID3043940
    • Quinoline, 1,2,3,4tetrahydro
    • DTXCID40102597
    • CS-D1404
    • NSC15311
    • STK182862
    • 1,2,3,4-Tetrahydroquinoline, 98%
    • AKOS000119058
    • AC-2531
    • 1,2,3,4-Tetrahydroquinoline, >=98%
    • NCGC00188132-01
    • SY001847
    • TS-01727
    • DB-012676
    • NS00020012
    • T0113
    • EN300-19046
    • A843757
    • Q21099119
    • 1,2,3,4-Tetrahydroquinoline, purum, >=96.0% (GC)
    • F2190-0415
    • Z104472414
    • 211-237-6
    • 246-995-7

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 157.07
    methanol 219.83
    isopropanol 111.8
    water 0.66
    ethyl acetate 284.31
    n-propanol 142.1
    acetone 431.63
    n-butanol 147.22
    acetonitrile 297.95
    DMF 546.07
    toluene 184.26
    isobutanol 108.46
    1,4-dioxane 748.28
    methyl acetate 270.8
    THF 734.43
    2-butanone 311.79
    n-pentanol 127.4
    sec-butanol 94.63
    n-hexane 28.61
    ethylene glycol 40.03
    NMP 499.87
    cyclohexane 35.89
    DMSO 810.75
    n-butyl acetate 306.22
    n-octanol 83.72
    chloroform 857.02
    n-propyl acetate 211.22
    acetic acid 228.93
    dichloromethane 849.83
    cyclohexanone 475.64
    propylene glycol 37.67
    isopropyl acetate 158.77
    DMAc 322.58
    2-ethoxyethanol 191.46
    isopentanol 122.78
    n-heptane 36.16
    ethyl formate 240.13
    1,2-dichloroethane 496.98
    n-hexanol 177.78
    2-methoxyethanol 274.82
    isobutyl acetate 147.2
    tetrachloromethane 146.76
    n-pentyl acetate 143.3
    transcutol 774.86
    n-heptanol 85.65
    ethylbenzene 71.13
    MIBK 160.27
    2-propoxyethanol 280.49
    tert-butanol 134.88
    MTBE 166.57
    2-butoxyethanol 148.9
    propionic acid 165.88
    o-xylene 92.91
    formic acid 73.58
    diethyl ether 255.45
    m-xylene 110.67
    p-xylene 93.87
    chlorobenzene 304.79
    dimethyl carbonate 131.04
    n-octane 18.0
    formamide 117.19
    cyclopentanone 673.05
    2-pentanone 260.81
    anisole 166.31
    cyclopentyl methyl ether 315.35
    gamma-butyrolactone 692.92
    1-methoxy-2-propanol 209.44
    pyridine 492.43
    3-pentanone 219.85
    furfural 546.99
    n-dodecane 16.14
    diethylene glycol 197.78
    diisopropyl ether 73.57
    tert-amyl alcohol 99.95
    acetylacetone 330.89
    n-hexadecane 18.28
    acetophenone 155.1
    methyl propionate 219.96
    isopentyl acetate 205.29
    trichloroethylene 829.42
    n-nonanol 75.48
    cyclohexanol 131.81
    benzyl alcohol 118.24
    2-ethylhexanol 113.28
    isooctanol 73.86
    dipropyl ether 177.71
    1,2-dichlorobenzene 226.5
    ethyl lactate 83.58
    propylene carbonate 320.49
    n-methylformamide 280.34
    2-pentanol 93.94
    n-pentane 24.51
    1-propoxy-2-propanol 191.7
    1-methoxy-2-propyl acetate 207.05
    2-(2-methoxypropoxy) propanol 137.68
    mesitylene 74.52
    ε-caprolactone 381.83
    p-cymene 62.6
    epichlorohydrin 701.65
    1,1,1-trichloroethane 401.27
    2-aminoethanol 70.91
    morpholine-4-carbaldehyde 526.55
    sulfolane 683.89
    2,2,4-trimethylpentane 18.52
    2-methyltetrahydrofuran 445.06
    n-hexyl acetate 175.93
    isooctane 17.69
    2-(2-butoxyethoxy)ethanol 207.61
    sec-butyl acetate 118.04
    tert-butyl acetate 168.86
    decalin 24.96
    glycerin 81.79
    diglyme 426.89
    acrylic acid 161.18
    isopropyl myristate 75.86
    n-butyric acid 256.49
    acetyl acetate 200.65
    di(2-ethylhexyl) phthalate 67.66
    ethyl propionate 159.38
    nitromethane 567.33
    1,2-diethoxyethane 311.76
    benzonitrile 207.42
    trioctyl phosphate 54.64
    1-bromopropane 257.58
    gamma-valerolactone 709.91
    n-decanol 61.05
    triethyl phosphate 80.26
    4-methyl-2-pentanol 66.3
    propionitrile 224.07
    vinylene carbonate 324.88
    1,1,2-trichlorotrifluoroethane 306.65
    DMS 147.42
    cumene 55.09
    2-octanol 58.93
    2-hexanone 209.13
    octyl acetate 93.27
    limonene 93.18
    1,2-dimethoxyethane 406.68
    ethyl orthosilicate 78.58
    tributyl phosphate 73.66
    diacetone alcohol 151.6
    N,N-dimethylaniline 104.67
    acrylonitrile 300.1
    aniline 194.91
    1,3-propanediol 121.92
    bromobenzene 339.67
    dibromomethane 523.2
    1,1,2,2-tetrachloroethane 526.81
    2-methyl-cyclohexyl acetate 121.62
    tetrabutyl urea 92.17
    diisobutyl methanol 73.26
    2-phenylethanol 133.22
    styrene 101.33
    dioctyl adipate 92.69
    dimethyl sulfate 211.52
    ethyl butyrate 190.98
    methyl lactate 95.27
    butyl lactate 96.59
    diethyl carbonate 116.98
    propanediol butyl ether 124.98
    triethyl orthoformate 121.82
    p-tert-butyltoluene 60.46
    methyl 4-tert-butylbenzoate 122.21
    morpholine 535.95
    tert-butylamine 89.91
    n-dodecanol 50.62
    dimethoxymethane 372.84
    ethylene carbonate 275.5
    cyrene 141.78
    2-ethoxyethyl acetate 198.33
    2-ethylhexyl acetate 172.04
    1,2,4-trichlorobenzene 248.16
    4-methylpyridine 414.72
    dibutyl ether 152.88
    2,6-dimethyl-4-heptanol 73.26
    DEF 301.22
    dimethyl isosorbide 254.85
    tetrachloroethylene 379.37
    eugenol 120.75
    triacetin 157.22
    span 80 115.72
    1,4-butanediol 61.53
    1,1-dichloroethane 405.05
    2-methyl-1-pentanol 108.39
    methyl formate 245.51
    2-methyl-1-butanol 107.06
    n-decane 24.44
    butyronitrile 231.07
    3,7-dimethyl-1-octanol 85.33
    1-chlorooctane 82.36
    1-chlorotetradecane 37.31
    n-nonane 24.29
    undecane 19.47
    tert-butylcyclohexane 27.46
    cyclooctane 18.08
    cyclopentanol 160.76
    tetrahydropyran 463.66
    tert-amyl methyl ether 119.46
    2,5,8-trioxanonane 264.13
    1-hexene 93.14
    2-isopropoxyethanol 140.38
    2,2,2-trifluoroethanol 92.84
    methyl butyrate 222.6

    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