Lactyl lactate

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  • Identifiers

    CAS number
    97-73-4

    Molecular formula
    C6H10O5

    SMILES
    CC(C(=O)OC(=O)C(C)O)O

    Safety labels

  • Odor profile

    Fragrance
    Caramellic 66.53%
    Buttery 60.99%
    Sweet 47.87%
    Creamy 44.01%
    Milky 39.57%
    Sour 38.82%
    Fatty 37.14%
    Odorless 32.05%
    Dairy 31.4%
    Burnt 30.5%

     

    Flavor
    Odorless 51.26%
    Fruity 40.2%
    Very mild 34.9%
    Creamy 31.24%
    Sour 28.52%
    Buttery 28.09%
    Mild 26.63%
    Caramellic 24.38%
    Sweet-like 21.62%
    Bland 21.25%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    -0.6

    pKa est.
    6.53 (neutral)

    Molecular weight
    162.14 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Boiling point est.
    276°C

    Flash point

    • 123.48 ˚C est.

  • Synonyms

    • Lactyl lactate
    • RefChem:152053
    • Lactic anhydride
    • 97-73-4
    • 2-hydroxypropanoyl 2-hydroxypropanoate
    • Propanoic acid, 2-hydroxy-, anhydride
    • 2-hydroxypropanoic anhydride
    • 5GV491FN51
    • Propanoic acid, 2-hydroxy-, 1,1'-anhydride
    • Milchsaureanhydrid
    • LACTIC ACID ANHYDRIDE
    • SCHEMBL447234
    • UNII-5GV491FN51
    • DTXSID30914227
    • EINECS 202-604-1
    • AKOS028108470
    • NS00040997
    • Q27262143
    • 97-73-4

  • Applications

    Lactyl lactate (CAS 97-73-4) is used as a surfactant and mild emulsifier with moisturizing properties, commonly applied in cosmetics and personal care. It is also found in cleaning and household formulations as a mild solvent and processing aid, helping blending and formulation stability. In the plastics and polymers sector, lactyl lactate can function as a plasticizer or processing aid to improve flexibility and handling of bio-based or eco-friendly polymer systems. Additionally, it may serve as an intermediate or formulation additive in production and in coatings/inks formulations, leveraging its compatibility with various polymers and surface-active components. Its use is subject to local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 144.9
    methanol 242.05
    isopropanol 103.57
    water 70.6
    ethyl acetate 18.66
    n-propanol 91.29
    acetone 90.6
    n-butanol 73.64
    acetonitrile 35.34
    DMF 276.98
    toluene 14.5
    isobutanol 56.12
    1,4-dioxane 123.76
    methyl acetate 33.17
    THF 101.76
    2-butanone 48.61
    n-pentanol 53.98
    sec-butanol 78.09
    n-hexane 7.04
    ethylene glycol 103.44
    NMP 237.22
    cyclohexane 15.92
    DMSO 556.63
    n-butyl acetate 18.32
    n-octanol 31.99
    chloroform 29.15
    n-propyl acetate 13.7
    acetic acid 69.53
    dichloromethane 57.09
    cyclohexanone 67.6
    propylene glycol 76.18
    isopropyl acetate 11.58
    DMAc 276.04
    2-ethoxyethanol 121.13
    isopentanol 51.02
    n-heptane 8.26
    ethyl formate 49.6
    1,2-dichloroethane 55.66
    n-hexanol 34.91
    2-methoxyethanol 209.4
    isobutyl acetate 6.76
    tetrachloromethane 5.72
    n-pentyl acetate 17.0
    transcutol 84.14
    n-heptanol 29.68
    ethylbenzene 14.65
    MIBK 15.01
    2-propoxyethanol 72.25
    tert-butanol 95.89
    MTBE 41.6
    2-butoxyethanol 57.69
    propionic acid 49.41
    o-xylene 22.07
    formic acid 146.45
    diethyl ether 36.77
    m-xylene 11.71
    p-xylene 18.05
    chlorobenzene 13.78
    dimethyl carbonate 20.5
    n-octane 5.06
    formamide 182.77
    cyclopentanone 74.8
    2-pentanone 30.03
    anisole 27.31
    cyclopentyl methyl ether 30.33
    gamma-butyrolactone 86.57
    1-methoxy-2-propanol 102.63
    pyridine 58.04
    3-pentanone 26.78
    furfural 97.45
    n-dodecane 3.77
    diethylene glycol 94.91
    diisopropyl ether 8.57
    tert-amyl alcohol 79.67
    acetylacetone 29.82
    n-hexadecane 3.95
    acetophenone 32.42
    methyl propionate 29.11
    isopentyl acetate 16.08
    trichloroethylene 44.19
    n-nonanol 28.76
    cyclohexanol 56.62
    benzyl alcohol 45.67
    2-ethylhexanol 20.64
    isooctanol 21.42
    dipropyl ether 20.05
    1,2-dichlorobenzene 16.41
    ethyl lactate 20.76
    propylene carbonate 39.49
    n-methylformamide 140.92
    2-pentanol 38.43
    n-pentane 10.3
    1-propoxy-2-propanol 43.88
    1-methoxy-2-propyl acetate 21.65
    2-(2-methoxypropoxy) propanol 48.76
    mesitylene 9.21
    ε-caprolactone 58.69
    p-cymene 11.16
    epichlorohydrin 83.4
    1,1,1-trichloroethane 11.75
    2-aminoethanol 117.12
    morpholine-4-carbaldehyde 191.38
    sulfolane 156.45
    2,2,4-trimethylpentane 4.15
    2-methyltetrahydrofuran 64.15
    n-hexyl acetate 22.81
    isooctane 1.99
    2-(2-butoxyethoxy)ethanol 60.03
    sec-butyl acetate 7.84
    tert-butyl acetate 13.04
    decalin 5.74
    glycerin 106.05
    diglyme 106.89
    acrylic acid 55.92
    isopropyl myristate 10.9
    n-butyric acid 38.86
    acetyl acetate 10.82
    di(2-ethylhexyl) phthalate 18.13
    ethyl propionate 13.76
    nitromethane 91.92
    1,2-diethoxyethane 33.09
    benzonitrile 26.89
    trioctyl phosphate 15.69
    1-bromopropane 28.76
    gamma-valerolactone 121.16
    n-decanol 23.72
    triethyl phosphate 14.72
    4-methyl-2-pentanol 17.56
    propionitrile 28.12
    vinylene carbonate 43.26
    1,1,2-trichlorotrifluoroethane 85.06
    DMS 18.22
    cumene 11.78
    2-octanol 19.94
    2-hexanone 20.28
    octyl acetate 17.02
    limonene 16.17
    1,2-dimethoxyethane 153.37
    ethyl orthosilicate 14.35
    tributyl phosphate 14.11
    diacetone alcohol 33.78
    N,N-dimethylaniline 35.97
    acrylonitrile 39.13
    aniline 31.98
    1,3-propanediol 121.6
    bromobenzene 10.77
    dibromomethane 39.06
    1,1,2,2-tetrachloroethane 52.78
    2-methyl-cyclohexyl acetate 17.08
    tetrabutyl urea 28.35
    diisobutyl methanol 14.38
    2-phenylethanol 29.66
    styrene 14.68
    dioctyl adipate 20.31
    dimethyl sulfate 43.53
    ethyl butyrate 15.66
    methyl lactate 38.47
    butyl lactate 23.07
    diethyl carbonate 12.82
    propanediol butyl ether 48.92
    triethyl orthoformate 16.14
    p-tert-butyltoluene 11.23
    methyl 4-tert-butylbenzoate 34.64
    morpholine 134.42
    tert-butylamine 53.37
    n-dodecanol 19.06
    dimethoxymethane 108.9
    ethylene carbonate 36.57
    cyrene 62.57
    2-ethoxyethyl acetate 23.34
    2-ethylhexyl acetate 12.65
    1,2,4-trichlorobenzene 20.34
    4-methylpyridine 47.36
    dibutyl ether 17.68
    2,6-dimethyl-4-heptanol 14.38
    DEF 72.33
    dimethyl isosorbide 57.62
    tetrachloroethylene 37.28
    eugenol 39.73
    triacetin 23.42
    span 80 39.86
    1,4-butanediol 68.3
    1,1-dichloroethane 23.41
    2-methyl-1-pentanol 40.79
    methyl formate 99.54
    2-methyl-1-butanol 53.32
    n-decane 5.38
    butyronitrile 30.75
    3,7-dimethyl-1-octanol 23.41
    1-chlorooctane 12.81
    1-chlorotetradecane 6.7
    n-nonane 5.46
    undecane 4.4
    tert-butylcyclohexane 4.0
    cyclooctane 6.82
    cyclopentanol 64.66
    tetrahydropyran 64.27
    tert-amyl methyl ether 34.78
    2,5,8-trioxanonane 87.09
    1-hexene 14.42
    2-isopropoxyethanol 58.17
    2,2,2-trifluoroethanol 41.27
    methyl butyrate 24.91

    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