2-Methyloctadecanoic acid

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  • Identifiers

    CAS number
    7217-83-6

    Molecular formula
    C19H38O2

    SMILES
    CCCCCCCCCCCCCCCCC(C)C(=O)O

    Safety labels

  • Odor profile

    Fragrance
    Waxy 78.2%
    Fatty 72.36%
    Oily 45.05%
    Odorless 28.81%
    Creamy 27.97%
    Dairy 25.99%
    Milky 24.64%
    Meaty 24.28%
    Savory 22.78%
    Soapy 21.08%

     

    Flavor
    Waxy 52.16%
    Fatty 49.8%
    Mild 38.86%
    Fat 33.6%
    Bland 33.25%
    Oily 31.97%
    Faint 31.53%
    Odorless 27.21%
    Coconut 26.5%
    Slightly waxy 25.95%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    8.8

    pKa est.
    7.45 (neutral)

    Molecular weight
    298.5 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Boiling point est.
    378°C

    Flash point

    • 184.52 ˚C est.

  • Synonyms

    • 2-Methyloctadecanoic acid
    • 7217-83-6
    • UNII-24T2B6RLRL
    • 24T2B6RLRL
    • 2-methylstearic acid
    • alpha-methylstearic acid
    • EINECS 230-607-8
    • alpha-methyloctadecanoic acid
    • J227.449C
    • CHEBI:144310
    • DL-2-METHYLOCTADECANOIC ACID
    • RefChem:25825
    • alpha-METHYL STEARIC ACID
    • 2-METHYLOCTADECANOIC ACID, (+-)-
    • 230-607-8
    • Octadecanoic acid, 2-methyl-
    • 2-methyl-octadecanoic acid
    • methyloctadecanoic acid
    • SCHEMBL194398
    • (+/-)-2-Methylstearic acid
    • SCHEMBL8885541
    • 2-Methyloctadecanoic acid, 97%
    • DTXSID80864021
    • GBZDALHFANHWOF-UHFFFAOYSA-N
    • .ALPHA.-METHYL STEARIC ACID
    • LMFA01020095
    • AKOS024319227
    • 2-METHYLOCTADECANOIC ACID, (+/-)-
    • NS00044882
    • Q27253877
    • 7217-83-6

  • Applications

    2-Methyloctadecanoic acid (CAS 7217-83-6) is mainly used as a synthetic building block for long-chain esters and polymer materials; practical applications include: as a raw material or intermediate for emollient esters and skin-conditioning ingredients in cosmetics and personal care; as a starting material for plasticizers and specialty lubricants in polymer processing; as a precursor for surfactants or surface-active agents in detergents and cleaning formulations; used to manufacture long-chain esters for coatings and inks to impart lubrication and water resistance; and as a base to adjust viscosity and flow properties in polymer systems, subject to local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 78.63
    methanol 64.56
    isopropanol 128.49
    water 0.02
    ethyl acetate 309.36
    n-propanol 108.95
    acetone 145.61
    n-butanol 135.28
    acetonitrile 54.85
    DMF 338.69
    toluene 101.49
    isobutanol 119.38
    1,4-dioxane 282.15
    methyl acetate 173.39
    THF 910.85
    2-butanone 276.88
    n-pentanol 113.79
    sec-butanol 149.62
    n-hexane 58.91
    ethylene glycol 3.58
    NMP 718.36
    cyclohexane 186.4
    DMSO 354.27
    n-butyl acetate 475.2
    n-octanol 131.52
    chloroform 579.13
    n-propyl acetate 466.55
    acetic acid 68.4
    dichloromethane 580.53
    cyclohexanone 826.59
    propylene glycol 18.43
    isopropyl acetate 355.39
    DMAc 579.09
    2-ethoxyethanol 203.32
    isopentanol 198.65
    n-heptane 55.04
    ethyl formate 128.34
    1,2-dichloroethane 477.18
    n-hexanol 126.34
    2-methoxyethanol 197.75
    isobutyl acetate 332.76
    tetrachloromethane 192.29
    n-pentyl acetate 624.87
    transcutol 979.0
    n-heptanol 132.99
    ethylbenzene 102.29
    MIBK 356.42
    2-propoxyethanol 243.2
    tert-butanol 256.34
    MTBE 394.96
    2-butoxyethanol 312.55
    propionic acid 105.47
    o-xylene 113.52
    formic acid 12.51
    diethyl ether 231.57
    m-xylene 102.97
    p-xylene 157.11
    chlorobenzene 196.67
    dimethyl carbonate 60.82
    n-octane 28.53
    formamide 31.15
    cyclopentanone 771.12
    2-pentanone 328.38
    anisole 210.73
    cyclopentyl methyl ether 514.17
    gamma-butyrolactone 645.4
    1-methoxy-2-propanol 260.29
    pyridine 289.57
    3-pentanone 256.86
    furfural 407.91
    n-dodecane 13.83
    diethylene glycol 74.46
    diisopropyl ether 157.72
    tert-amyl alcohol 266.45
    acetylacetone 358.42
    n-hexadecane 17.16
    acetophenone 272.97
    methyl propionate 209.76
    isopentyl acetate 520.42
    trichloroethylene 728.47
    n-nonanol 132.86
    cyclohexanol 274.28
    benzyl alcohol 123.09
    2-ethylhexanol 148.05
    isooctanol 159.76
    dipropyl ether 322.69
    1,2-dichlorobenzene 269.28
    ethyl lactate 138.33
    propylene carbonate 390.12
    n-methylformamide 96.89
    2-pentanol 146.99
    n-pentane 36.09
    1-propoxy-2-propanol 316.44
    1-methoxy-2-propyl acetate 400.84
    2-(2-methoxypropoxy) propanol 236.78
    mesitylene 98.22
    ε-caprolactone 714.17
    p-cymene 102.47
    epichlorohydrin 678.01
    1,1,1-trichloroethane 564.87
    2-aminoethanol 23.84
    morpholine-4-carbaldehyde 507.6
    sulfolane 1129.3
    2,2,4-trimethylpentane 43.82
    2-methyltetrahydrofuran 674.34
    n-hexyl acetate 511.28
    isooctane 30.61
    2-(2-butoxyethoxy)ethanol 347.8
    sec-butyl acetate 407.51
    tert-butyl acetate 529.56
    decalin 72.51
    glycerin 29.18
    diglyme 752.04
    acrylic acid 55.97
    isopropyl myristate 183.62
    n-butyric acid 299.66
    acetyl acetate 168.49
    di(2-ethylhexyl) phthalate 118.97
    ethyl propionate 361.87
    nitromethane 169.66
    1,2-diethoxyethane 514.76
    benzonitrile 162.06
    trioctyl phosphate 102.85
    1-bromopropane 327.42
    gamma-valerolactone 924.79
    n-decanol 85.4
    triethyl phosphate 199.8
    4-methyl-2-pentanol 131.07
    propionitrile 96.89
    vinylene carbonate 252.82
    1,1,2-trichlorotrifluoroethane 383.13
    DMS 218.08
    cumene 90.13
    2-octanol 143.33
    2-hexanone 372.76
    octyl acetate 206.68
    limonene 201.41
    1,2-dimethoxyethane 547.01
    ethyl orthosilicate 210.39
    tributyl phosphate 138.27
    diacetone alcohol 415.76
    N,N-dimethylaniline 173.55
    acrylonitrile 84.15
    aniline 114.83
    1,3-propanediol 67.78
    bromobenzene 239.16
    dibromomethane 401.69
    1,1,2,2-tetrachloroethane 807.69
    2-methyl-cyclohexyl acetate 369.81
    tetrabutyl urea 211.35
    diisobutyl methanol 133.59
    2-phenylethanol 131.75
    styrene 110.82
    dioctyl adipate 262.73
    dimethyl sulfate 161.52
    ethyl butyrate 440.54
    methyl lactate 89.03
    butyl lactate 327.19
    diethyl carbonate 214.13
    propanediol butyl ether 213.23
    triethyl orthoformate 351.24
    p-tert-butyltoluene 104.28
    methyl 4-tert-butylbenzoate 338.32
    morpholine 450.07
    tert-butylamine 189.44
    n-dodecanol 58.5
    dimethoxymethane 215.53
    ethylene carbonate 255.63
    cyrene 242.08
    2-ethoxyethyl acetate 513.08
    2-ethylhexyl acetate 454.96
    1,2,4-trichlorobenzene 310.8
    4-methylpyridine 321.28
    dibutyl ether 371.38
    2,6-dimethyl-4-heptanol 133.59
    DEF 467.05
    dimethyl isosorbide 561.41
    tetrachloroethylene 489.37
    eugenol 242.94
    triacetin 413.87
    span 80 243.11
    1,4-butanediol 29.97
    1,1-dichloroethane 399.46
    2-methyl-1-pentanol 157.16
    methyl formate 57.29
    2-methyl-1-butanol 160.65
    n-decane 34.64
    butyronitrile 155.63
    3,7-dimethyl-1-octanol 159.98
    1-chlorooctane 168.85
    1-chlorotetradecane 48.53
    n-nonane 35.09
    undecane 20.24
    tert-butylcyclohexane 61.64
    cyclooctane 48.7
    cyclopentanol 248.97
    tetrahydropyran 555.99
    tert-amyl methyl ether 342.14
    2,5,8-trioxanonane 412.27
    1-hexene 137.81
    2-isopropoxyethanol 212.76
    2,2,2-trifluoroethanol 37.09
    methyl butyrate 518.26

    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