Myristyl aspartic acid

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  • Identifiers

    CAS number
    70051-97-7

    Molecular formula
    C18H35NO4

    SMILES
    CCCCCCCCCCCCCCN[C@@H](CC(=O)O)C(=O)O

    Safety labels

  • Odor profile

    Fragrance
    Odorless 45.75%
    Waxy 38.13%
    Fatty 36.8%
    Savory 31.52%
    Meaty 28.04%
    Oily 26.87%
    Citrus 24.59%
    Fishy 23.35%
    Milky 22.34%
    Animal 19.87%

     

    Flavor
    Odorless 47.14%
    Bland 38.76%
    Mild 37.55%
    Fatty 32.3%
    Faint 28.81%
    Waxy 24.96%
    Slightly waxy 22.68%
    Bay oil 22.06%
    Cultured dairy 20.95%
    Delicate 20.22%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    3.3

    pKa est.
    5.81 (weak acid)

    Molecular weight
    329.5 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Boiling point est.
    423°C

    Flash point

    • 226.15 ˚C est.

  • Synonyms

    • Myristyl aspartic acid
    • 70051-97-7
    • Njbon ASP-14H
    • Myristyl aspartic acid, L-
    • L-Aspartic acid, N-tetradecyl-
    • OKW314E976
    • UNII-OKW314E976
    • Myristyl aspartic acid [INCI]
    • RefChem:201870
    • tetradecyl-L-aspartic acid
    • starbld0039603
    • tetradecyl aspartic acid
    • (2S)-2-(tetradecylamino)butanedioic acid
    • orb1985578
    • SCHEMBL6001495
    • AKOS040753179
    • Q27285707
    • 70051-97-7

  • Applications

    Myristyl aspartic acid (CAS 70051-97-7) is a surface-active agent and surfactant used as an emulsifier and conditioning component in cosmetic and personal care formulations (shampoos, cleansers, and lotions). It is also employed in household cleaning products as a surfactant and emulsifier; in industrial manufacturing, it can serve as an intermediate or specialty building block for surfactant derivatives and esters, and as a dispersant or processing aid in polymer and coating formulations to improve stability and compatibility in coatings and inks.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 13.08
    methanol 24.62
    isopropanol 9.74
    water 0.21
    ethyl acetate 6.97
    n-propanol 10.78
    acetone 13.68
    n-butanol 8.55
    acetonitrile 2.72
    DMF 75.4
    toluene 3.48
    isobutanol 8.51
    1,4-dioxane 14.43
    methyl acetate 8.11
    THF 67.44
    2-butanone 13.07
    n-pentanol 11.44
    sec-butanol 9.62
    n-hexane 1.12
    ethylene glycol 3.91
    NMP 148.31
    cyclohexane 1.67
    DMSO 196.19
    n-butyl acetate 13.84
    n-octanol 8.28
    chloroform 15.31
    n-propyl acetate 14.37
    acetic acid 25.45
    dichloromethane 14.4
    cyclohexanone 47.71
    propylene glycol 10.11
    isopropyl acetate 10.64
    DMAc 175.92
    2-ethoxyethanol 35.83
    isopentanol 11.58
    n-heptane 0.82
    ethyl formate 8.07
    1,2-dichloroethane 14.87
    n-hexanol 8.95
    2-methoxyethanol 35.17
    isobutyl acetate 11.81
    tetrachloromethane 4.89
    n-pentyl acetate 17.63
    transcutol 106.86
    n-heptanol 9.55
    ethylbenzene 5.17
    MIBK 14.27
    2-propoxyethanol 30.18
    tert-butanol 19.4
    MTBE 10.65
    2-butoxyethanol 32.48
    propionic acid 15.8
    o-xylene 6.98
    formic acid 15.31
    diethyl ether 4.09
    m-xylene 5.14
    p-xylene 7.27
    chlorobenzene 5.47
    dimethyl carbonate 7.35
    n-octane 0.7
    formamide 22.31
    cyclopentanone 60.61
    2-pentanone 11.91
    anisole 10.15
    cyclopentyl methyl ether 23.36
    gamma-butyrolactone 59.21
    1-methoxy-2-propanol 34.47
    pyridine 14.48
    3-pentanone 10.76
    furfural 44.96
    n-dodecane 0.47
    diethylene glycol 22.25
    diisopropyl ether 3.39
    tert-amyl alcohol 19.4
    acetylacetone 24.57
    n-hexadecane 0.55
    acetophenone 20.59
    methyl propionate 9.55
    isopentyl acetate 18.79
    trichloroethylene 27.52
    n-nonanol 9.0
    cyclohexanol 16.46
    benzyl alcohol 13.62
    2-ethylhexanol 7.95
    isooctanol 9.8
    dipropyl ether 6.48
    1,2-dichlorobenzene 9.18
    ethyl lactate 16.14
    propylene carbonate 31.98
    n-methylformamide 21.64
    2-pentanol 6.59
    n-pentane 0.54
    1-propoxy-2-propanol 25.73
    1-methoxy-2-propyl acetate 24.05
    2-(2-methoxypropoxy) propanol 35.6
    mesitylene 4.94
    ε-caprolactone 46.29
    p-cymene 5.1
    epichlorohydrin 40.0
    1,1,1-trichloroethane 13.53
    2-aminoethanol 11.9
    morpholine-4-carbaldehyde 76.27
    sulfolane 176.8
    2,2,4-trimethylpentane 1.2
    2-methyltetrahydrofuran 29.41
    n-hexyl acetate 19.96
    isooctane 0.72
    2-(2-butoxyethoxy)ethanol 44.71
    sec-butyl acetate 12.47
    tert-butyl acetate 21.69
    decalin 2.25
    glycerin 21.62
    diglyme 77.35
    acrylic acid 14.13
    isopropyl myristate 7.75
    n-butyric acid 21.78
    acetyl acetate 8.41
    di(2-ethylhexyl) phthalate 11.84
    ethyl propionate 11.2
    nitromethane 28.58
    1,2-diethoxyethane 19.06
    benzonitrile 8.98
    trioctyl phosphate 8.95
    1-bromopropane 5.78
    gamma-valerolactone 91.85
    n-decanol 6.06
    triethyl phosphate 13.4
    4-methyl-2-pentanol 7.16
    propionitrile 3.34
    vinylene carbonate 20.74
    1,1,2-trichlorotrifluoroethane 64.29
    DMS 15.57
    cumene 5.79
    2-octanol 6.73
    2-hexanone 16.56
    octyl acetate 10.32
    limonene 7.34
    1,2-dimethoxyethane 47.67
    ethyl orthosilicate 14.24
    tributyl phosphate 11.35
    diacetone alcohol 41.02
    N,N-dimethylaniline 15.05
    acrylonitrile 4.92
    aniline 7.37
    1,3-propanediol 16.86
    bromobenzene 5.62
    dibromomethane 9.62
    1,1,2,2-tetrachloroethane 34.47
    2-methyl-cyclohexyl acetate 20.64
    tetrabutyl urea 19.29
    diisobutyl methanol 6.66
    2-phenylethanol 11.89
    styrene 4.65
    dioctyl adipate 15.89
    dimethyl sulfate 30.85
    ethyl butyrate 13.42
    methyl lactate 17.05
    butyl lactate 26.0
    diethyl carbonate 9.12
    propanediol butyl ether 32.05
    triethyl orthoformate 15.29
    p-tert-butyltoluene 5.37
    methyl 4-tert-butylbenzoate 32.51
    morpholine 27.65
    tert-butylamine 9.27
    n-dodecanol 4.19
    dimethoxymethane 20.82
    ethylene carbonate 17.65
    cyrene 48.82
    2-ethoxyethyl acetate 24.2
    2-ethylhexyl acetate 14.26
    1,2,4-trichlorobenzene 13.46
    4-methylpyridine 14.24
    dibutyl ether 8.14
    2,6-dimethyl-4-heptanol 6.66
    DEF 28.27
    dimethyl isosorbide 70.78
    tetrachloroethylene 24.2
    eugenol 30.39
    triacetin 29.57
    span 80 28.47
    1,4-butanediol 10.15
    1,1-dichloroethane 8.83
    2-methyl-1-pentanol 14.34
    methyl formate 12.52
    2-methyl-1-butanol 10.77
    n-decane 0.94
    butyronitrile 4.51
    3,7-dimethyl-1-octanol 9.44
    1-chlorooctane 4.75
    1-chlorotetradecane 1.74
    n-nonane 0.84
    undecane 0.63
    tert-butylcyclohexane 1.93
    cyclooctane 0.77
    cyclopentanol 22.57
    tetrahydropyran 15.41
    tert-amyl methyl ether 12.73
    2,5,8-trioxanonane 56.84
    1-hexene 3.55
    2-isopropoxyethanol 26.28
    2,2,2-trifluoroethanol 14.48
    methyl butyrate 19.61

    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