1,2-Epoxyoctadecane

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  • Identifiers

    CAS number
    7390-81-0

    Molecular formula
    C18H36O

    SMILES
    CCCCCCCCCCCCCCCCC1CO1

    Safety labels

    Irritant
    Irritant

  • Odor profile

    Fragrance
    Waxy 73.5%
    Fatty 56.65%
    Oily 41.08%
    Odorless 24.75%
    Meaty 23.09%
    Savory 20.26%
    Fishy 19.93%
    Sweet 18.31%
    Creamy 18.09%
    Clean 17.57%

     

    Flavor
    Waxy 51.94%
    Alkane 37.88%
    Fatty 31.36%
    Mild 29.66%
    Bland 27.46%
    Slightly waxy 23.73%
    Fat 22.33%
    Delicate 21.8%
    Faint 21.23%
    Citrus peel 21.18%

     

    Odor impact est.
    Medium

  • Properties

    XLogP3-AA
    8.4

    pKa est.
    6.19 (neutral)

    Molecular weight
    268.5 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Melting point expt.

    • 79 °F (NTP, 1992)

    Boiling point

    • 279 °F at 0.5 mmHg (NTP, 1992)

    Flash point

    • 144.02 ˚C est.

    Solubility expt.

    • less than 1 mg/mL at 70 °F (NTP, 1992)

  • Synonyms

    • 1,2-EPOXYOCTADECANE
    • 7390-81-0
    • 2-Hexadecyloxirane
    • Hexadecyloxirane
    • Oxirane, hexadecyl-
    • 1,2-Octadecylene Oxide
    • Oxirane, 2-hexadecyl-
    • O8GK4E0CVL
    • octadecylene oxide
    • J91.342A
    • 1,2-OCTADECENE EPOXIDE
    • DTXSID4025246
    • OCTADECANE, 1,2-EPOXY-
    • RefChem:72061
    • OCTADECENE EPOXIDE
    • VIKOLOX 18
    • DTXCID505246
    • 230-977-0
    • MFCD00005152
    • Octadecane, epoxy-
    • CCRIS 2619
    • EINECS 230-977-0
    • UNII-O8GK4E0CVL
    • AI3-26311
    • 2-Hexadecyloxirane #
    • 1,2-epoxy octadecane
    • EPOXIDE C 18
    • SCHEMBL93394
    • SCHEMBL3174204
    • SCHEMBL3470554
    • SCHEMBL11260441
    • AKOS015855789
    • MSK183334-100T
    • MSK183334-1000T
    • AS-85004
    • SY049835
    • CS-0206689
    • E0313
    • NS00037570
    • ST50826621
    • G67084
    • F046810
    • 1,2-Epoxyoctadecane Solution in Toluene, 100ug/mL
    • 1,2-Epoxyoctadecane Solution in Toluene, 1000ug/mL
    • Q27285481
    • 7390-81-0

  • Applications

    1,2-Epoxyoctadecane (CAS 7390-81-0) is a long-chain aliphatic epoxide that serves as a reactive epoxide building block in polymer formulations. In practice, it is used as a reactive diluent for epoxy resins to lower viscosity and impart flexibility; it is a starting material for the synthesis of glycidyl derivatives and glycidyl polyol precursors for coatings, adhesives, and plastics; it can be employed in electronics encapsulation/potting formulations; it acts as an intermediate in the production of specialty polymers and flexible plastics; and it may be used as a precursor for more functional epoxy compounds.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 121.08
    methanol 54.6
    isopropanol 173.87
    water 0.01
    ethyl acetate 901.6
    n-propanol 178.51
    acetone 462.0
    n-butanol 238.12
    acetonitrile 165.93
    DMF 273.78
    toluene 353.97
    isobutanol 183.78
    1,4-dioxane 892.44
    methyl acetate 421.87
    THF 1964.02
    2-butanone 604.14
    n-pentanol 178.15
    sec-butanol 222.78
    n-hexane 212.91
    ethylene glycol 7.18
    NMP 581.41
    cyclohexane 872.37
    DMSO 426.8
    n-butyl acetate 1115.09
    n-octanol 154.34
    chloroform 2113.03
    n-propyl acetate 927.94
    acetic acid 149.41
    dichloromethane 2089.38
    cyclohexanone 1543.25
    propylene glycol 25.46
    isopropyl acetate 880.19
    DMAc 437.38
    2-ethoxyethanol 268.28
    isopentanol 299.65
    n-heptane 353.51
    ethyl formate 248.99
    1,2-dichloroethane 1424.58
    n-hexanol 242.28
    2-methoxyethanol 252.94
    isobutyl acetate 668.46
    tetrachloromethane 527.72
    n-pentyl acetate 800.64
    transcutol 1313.04
    n-heptanol 164.14
    ethylbenzene 271.15
    MIBK 665.19
    2-propoxyethanol 369.67
    tert-butanol 331.73
    MTBE 722.68
    2-butoxyethanol 340.05
    propionic acid 175.31
    o-xylene 290.86
    formic acid 15.08
    diethyl ether 782.34
    m-xylene 266.07
    p-xylene 369.6
    chlorobenzene 587.46
    dimethyl carbonate 119.77
    n-octane 92.18
    formamide 37.3
    cyclopentanone 1336.2
    2-pentanone 759.32
    anisole 490.16
    cyclopentyl methyl ether 1111.87
    gamma-butyrolactone 1081.8
    1-methoxy-2-propanol 324.17
    pyridine 841.17
    3-pentanone 629.41
    furfural 665.61
    n-dodecane 37.41
    diethylene glycol 107.82
    diisopropyl ether 441.0
    tert-amyl alcohol 335.05
    acetylacetone 838.98
    n-hexadecane 47.05
    acetophenone 503.41
    methyl propionate 458.42
    isopentyl acetate 1004.87
    trichloroethylene 2038.64
    n-nonanol 169.74
    cyclohexanol 500.29
    benzyl alcohol 217.14
    2-ethylhexanol 318.63
    isooctanol 199.26
    dipropyl ether 1163.93
    1,2-dichlorobenzene 626.67
    ethyl lactate 217.51
    propylene carbonate 674.56
    n-methylformamide 96.77
    2-pentanol 257.71
    n-pentane 163.31
    1-propoxy-2-propanol 512.51
    1-methoxy-2-propyl acetate 841.82
    2-(2-methoxypropoxy) propanol 295.93
    mesitylene 232.9
    ε-caprolactone 1190.75
    p-cymene 293.21
    epichlorohydrin 1473.29
    1,1,1-trichloroethane 1652.81
    2-aminoethanol 33.28
    morpholine-4-carbaldehyde 552.8
    sulfolane 1282.22
    2,2,4-trimethylpentane 97.22
    2-methyltetrahydrofuran 1472.99
    n-hexyl acetate 671.85
    isooctane 82.17
    2-(2-butoxyethoxy)ethanol 406.9
    sec-butyl acetate 807.0
    tert-butyl acetate 1009.09
    decalin 210.04
    glycerin 37.42
    diglyme 1111.07
    acrylic acid 95.78
    isopropyl myristate 303.82
    n-butyric acid 484.74
    acetyl acetate 531.83
    di(2-ethylhexyl) phthalate 154.21
    ethyl propionate 817.43
    nitromethane 331.9
    1,2-diethoxyethane 1083.42
    benzonitrile 336.28
    trioctyl phosphate 133.14
    1-bromopropane 1076.98
    gamma-valerolactone 1325.44
    n-decanol 113.82
    triethyl phosphate 428.92
    4-methyl-2-pentanol 204.68
    propionitrile 247.18
    vinylene carbonate 438.03
    1,1,2-trichlorotrifluoroethane 668.93
    DMS 364.48
    cumene 210.61
    2-octanol 152.07
    2-hexanone 708.31
    octyl acetate 302.45
    limonene 523.28
    1,2-dimethoxyethane 923.66
    ethyl orthosilicate 437.03
    tributyl phosphate 193.58
    diacetone alcohol 557.5
    N,N-dimethylaniline 320.31
    acrylonitrile 193.69
    aniline 263.82
    1,3-propanediol 95.27
    bromobenzene 754.45
    dibromomethane 1460.32
    1,1,2,2-tetrachloroethane 1947.34
    2-methyl-cyclohexyl acetate 703.32
    tetrabutyl urea 257.48
    diisobutyl methanol 305.83
    2-phenylethanol 251.42
    styrene 312.67
    dioctyl adipate 394.87
    dimethyl sulfate 224.43
    ethyl butyrate 1163.17
    methyl lactate 121.36
    butyl lactate 353.18
    diethyl carbonate 618.79
    propanediol butyl ether 189.08
    triethyl orthoformate 853.31
    p-tert-butyltoluene 268.33
    methyl 4-tert-butylbenzoate 432.52
    morpholine 1038.98
    tert-butylamine 287.14
    n-dodecanol 86.15
    dimethoxymethane 341.23
    ethylene carbonate 490.42
    cyrene 290.4
    2-ethoxyethyl acetate 767.87
    2-ethylhexyl acetate 872.48
    1,2,4-trichlorobenzene 699.69
    4-methylpyridine 679.5
    dibutyl ether 711.37
    2,6-dimethyl-4-heptanol 305.83
    DEF 749.14
    dimethyl isosorbide 740.78
    tetrachloroethylene 1181.73
    eugenol 274.9
    triacetin 598.12
    span 80 282.69
    1,4-butanediol 37.65
    1,1-dichloroethane 1284.77
    2-methyl-1-pentanol 223.92
    methyl formate 80.74
    2-methyl-1-butanol 247.61
    n-decane 89.63
    butyronitrile 382.76
    3,7-dimethyl-1-octanol 242.89
    1-chlorooctane 298.26
    1-chlorotetradecane 101.05
    n-nonane 95.39
    undecane 53.43
    tert-butylcyclohexane 155.12
    cyclooctane 238.83
    cyclopentanol 412.67
    tetrahydropyran 1632.25
    tert-amyl methyl ether 589.8
    2,5,8-trioxanonane 583.93
    1-hexene 394.47
    2-isopropoxyethanol 292.96
    2,2,2-trifluoroethanol 66.16
    methyl butyrate 996.69

    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