11-Hexadecenoic acid

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  • Identifiers

    CAS number
    2271-34-3

    Molecular formula
    C16H30O2

    SMILES
    CCCC/C=C/CCCCCCCCCC(=O)O

    Safety labels

  • Odor profile

    Fragrance
    Fatty 84.62%
    Waxy 68.32%
    Oily 54.6%
    Dairy 36.43%
    Creamy 30.26%
    Milky 29.5%
    Meaty 26.3%
    Citrus 24.7%
    Savory 23.26%
    Soapy 23.15%

     

    Flavor
    Fatty 56.54%
    Waxy 44.48%
    Faint 32.52%
    Fat 30.75%
    Mild 26.41%
    Oily 26.09%
    Slightly waxy 24.49%
    Bay oil 23.18%
    Creamy 22.48%
    Soapy 22.43%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    6.1

    pKa est.
    7.07 (neutral)

    Molecular weight
    254.41 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Boiling point est.
    340°C

    Flash point

    • 180.02 ˚C est.

  • Synonyms

    • 11-Hexadecenoic acid
    • (E)-hexadec-11-enoic acid
    • 2271-34-3
    • hexadec-11-enoic acid
    • 2U26NEE2PA
    • DTXSID601315084
    • RefChem:1057361
    • DTXCID001318935
    • (E)-11-Hexadecenoic acid
    • Lycopodic acid
    • Hexadecenoicacid,Z-11-
    • Lycopodiumoleic acid
    • 11E-hexadecenoic acid
    • (11E)-HEXADEC-11-ENOIC ACID
    • 73292-39-4
    • 11-Hexadecenoic acid (92% cis, 8% trans)
    • 11-?Hexadecenoic Acid
    • C16:1n-5
    • e-11-hexadecenoic acid
    • (11E)-11-Hexadecenoic acid
    • SCHEMBL2573088
    • CHEBI:196236
    • 11-Hexadecenoic acid, (11E)-
    • DTXSID901313194
    • LMFA01030261
    • PD094670
    • C16:1 (cis-11/trans-11) Fatty acid
    • HY-133823
    • CS-0133973
    • 3IV
    • 2271-34-3

  • Applications

    11-Hexadecenoic acid (CAS 2271-34-3) is a C16 monounsaturated fatty acid used primarily as a feedstock for the synthesis of fatty acid esters and derivatives. In cosmetics and personal care, it serves as an emollient and as a building block for ester derivatives used in fragrance and texture modifiers. In cleaning and household products, its fatty acid esters act as surfactants or co-surfactants and as processing aids. In industrial manufacturing, it serves as a starting material for lubricants and lubricant additives, and as a component or plasticizer in polymer and coating formulations, including alkyd/resin systems. Overall, typical applications include cosmetics/personal care, surfactants/cleaning products, lubricants and lubricant additives, and plastics/coatings as a fatty acid-derived building block.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 561.68
    methanol 403.61
    isopropanol 599.32
    water 0.01
    ethyl acetate 401.43
    n-propanol 479.0
    acetone 553.04
    n-butanol 498.33
    acetonitrile 108.96
    DMF 650.27
    toluene 144.22
    isobutanol 403.21
    1,4-dioxane 510.89
    methyl acetate 206.34
    THF 1629.15
    2-butanone 506.96
    n-pentanol 438.17
    sec-butanol 484.09
    n-hexane 199.29
    ethylene glycol 16.62
    NMP 612.64
    cyclohexane 195.25
    DMSO 1080.54
    n-butyl acetate 546.09
    n-octanol 178.93
    chloroform 457.71
    n-propyl acetate 498.49
    acetic acid 141.43
    dichloromethane 477.13
    cyclohexanone 878.88
    propylene glycol 81.22
    isopropyl acetate 433.68
    DMAc 637.53
    2-ethoxyethanol 491.16
    isopentanol 554.05
    n-heptane 83.42
    ethyl formate 147.28
    1,2-dichloroethane 500.26
    n-hexanol 400.08
    2-methoxyethanol 583.56
    isobutyl acetate 362.22
    tetrachloromethane 104.48
    n-pentyl acetate 430.53
    transcutol 1822.28
    n-heptanol 202.92
    ethylbenzene 131.25
    MIBK 526.5
    2-propoxyethanol 579.7
    tert-butanol 765.61
    MTBE 813.61
    2-butoxyethanol 403.1
    propionic acid 170.63
    o-xylene 124.45
    formic acid 24.3
    diethyl ether 681.86
    m-xylene 143.72
    p-xylene 153.91
    chlorobenzene 174.59
    dimethyl carbonate 63.57
    n-octane 29.85
    formamide 50.32
    cyclopentanone 840.86
    2-pentanone 654.59
    anisole 250.05
    cyclopentyl methyl ether 797.51
    gamma-butyrolactone 582.37
    1-methoxy-2-propanol 686.27
    pyridine 341.55
    3-pentanone 326.96
    furfural 381.64
    n-dodecane 16.97
    diethylene glycol 210.5
    diisopropyl ether 256.41
    tert-amyl alcohol 618.34
    acetylacetone 480.53
    n-hexadecane 20.04
    acetophenone 265.02
    methyl propionate 270.0
    isopentyl acetate 547.53
    trichloroethylene 596.33
    n-nonanol 170.92
    cyclohexanol 495.94
    benzyl alcohol 189.45
    2-ethylhexanol 299.27
    isooctanol 207.74
    dipropyl ether 529.33
    1,2-dichlorobenzene 191.23
    ethyl lactate 154.98
    propylene carbonate 302.53
    n-methylformamide 173.19
    2-pentanol 451.12
    n-pentane 94.22
    1-propoxy-2-propanol 562.92
    1-methoxy-2-propyl acetate 471.67
    2-(2-methoxypropoxy) propanol 319.92
    mesitylene 114.72
    ε-caprolactone 639.16
    p-cymene 94.67
    epichlorohydrin 773.85
    1,1,1-trichloroethane 390.94
    2-aminoethanol 111.17
    morpholine-4-carbaldehyde 546.5
    sulfolane 965.0
    2,2,4-trimethylpentane 54.45
    2-methyltetrahydrofuran 1077.29
    n-hexyl acetate 472.48
    isooctane 47.53
    2-(2-butoxyethoxy)ethanol 527.71
    sec-butyl acetate 404.48
    tert-butyl acetate 566.46
    decalin 88.79
    glycerin 95.54
    diglyme 887.07
    acrylic acid 78.0
    isopropyl myristate 172.27
    n-butyric acid 470.88
    acetyl acetate 157.57
    di(2-ethylhexyl) phthalate 127.18
    ethyl propionate 361.81
    nitromethane 232.95
    1,2-diethoxyethane 733.57
    benzonitrile 180.34
    trioctyl phosphate 108.03
    1-bromopropane 445.66
    gamma-valerolactone 934.86
    n-decanol 121.02
    triethyl phosphate 150.96
    4-methyl-2-pentanol 295.96
    propionitrile 163.86
    vinylene carbonate 186.74
    1,1,2-trichlorotrifluoroethane 427.47
    DMS 183.95
    cumene 108.64
    2-octanol 161.19
    2-hexanone 591.54
    octyl acetate 199.87
    limonene 195.7
    1,2-dimethoxyethane 870.69
    ethyl orthosilicate 171.11
    tributyl phosphate 138.52
    diacetone alcohol 586.4
    N,N-dimethylaniline 209.58
    acrylonitrile 128.74
    aniline 173.88
    1,3-propanediol 245.15
    bromobenzene 193.82
    dibromomethane 394.35
    1,1,2,2-tetrachloroethane 670.01
    2-methyl-cyclohexyl acetate 330.21
    tetrabutyl urea 193.32
    diisobutyl methanol 193.23
    2-phenylethanol 212.57
    styrene 145.98
    dioctyl adipate 242.06
    dimethyl sulfate 140.04
    ethyl butyrate 399.37
    methyl lactate 133.72
    butyl lactate 287.46
    diethyl carbonate 176.45
    propanediol butyl ether 333.19
    triethyl orthoformate 290.87
    p-tert-butyltoluene 99.29
    methyl 4-tert-butylbenzoate 273.78
    morpholine 958.03
    tert-butylamine 517.19
    n-dodecanol 88.85
    dimethoxymethane 490.32
    ethylene carbonate 185.51
    cyrene 264.01
    2-ethoxyethyl acetate 420.34
    2-ethylhexyl acetate 418.91
    1,2,4-trichlorobenzene 218.9
    4-methylpyridine 394.18
    dibutyl ether 439.09
    2,6-dimethyl-4-heptanol 193.23
    DEF 575.16
    dimethyl isosorbide 574.09
    tetrachloroethylene 385.66
    eugenol 235.11
    triacetin 339.16
    span 80 318.28
    1,4-butanediol 91.88
    1,1-dichloroethane 428.98
    2-methyl-1-pentanol 403.19
    methyl formate 78.51
    2-methyl-1-butanol 443.63
    n-decane 36.98
    butyronitrile 311.09
    3,7-dimethyl-1-octanol 235.59
    1-chlorooctane 166.09
    1-chlorotetradecane 53.28
    n-nonane 38.03
    undecane 23.53
    tert-butylcyclohexane 79.35
    cyclooctane 57.0
    cyclopentanol 476.1
    tetrahydropyran 1103.49
    tert-amyl methyl ether 542.27
    2,5,8-trioxanonane 542.04
    1-hexene 468.51
    2-isopropoxyethanol 444.3
    2,2,2-trifluoroethanol 33.67
    methyl butyrate 513.27

    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