Butyl lactate, (S)-

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  • Identifiers

    CAS number
    34451-19-9

    Molecular formula
    C7H14O3

    SMILES
    CCCCOC(=O)[C@H](C)O

    Safety labels

    Corrosive
    Corrosive

    Irritant
    Irritant

  • Odor profile

    Fragrance
    Fruity 87.08%
    Caramellic 75.24%
    Sweet 70.35%
    Winey 59.09%
    Buttery 57.68%
    Green 49.92%
    Creamy 47.32%
    Oily 44.42%
    Fatty 42.14%
    Ethereal 41.92%

     

    Flavor
    Fruity 83.66%
    Waxy 51.81%
    Creamy 49.11%
    Sweet 44.67%
    Fruit 38.99%
    Berry 36.2%
    Buttery 35.79%
    Tropical 34.37%
    Grape 33.4%
    Cheese 32.54%

     

    Odor impact est.
    Medium

  • Properties

    XLogP3-AA
    1.1

    pKa est.
    8.16 (weak base)

    Molecular weight
    146.18 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Moderately fast

    Boiling point est.
    189°C

    Flash point

    • 77.25 ˚C est.

  • Synonyms

    • 34451-19-9
    • butyl (2S)-2-hydroxypropanoate
    • Propanoic acid, 2-hydroxy-, butyl ester, (2S)-
    • (+)-Butyl lactate
    • (-)-Butyl L-lactate
    • Butyl L-lactate
    • Butyl lactate, (S)-
    • (S)-Butyl 2-hydroxypropanoate
    • DTXSID4042335
    • 33GLZ553P8
    • EINECS 252-036-3
    • (+)-N-BUTYL LACTATE
    • BUTYL L-(+)-LACTATE
    • BUTYL LACTATE, (+)-
    • DTXCID2022335
    • (S)-(+)-BUTYL LACTATE
    • L-LACTIC ACID N-BUTYL ESTER
    • Butyl (S)-2-hydroxypropionate
    • UNII-33GLZ553P8
    • (S)-butyl lactate
    • (s)-n-butyllactate
    • MFCD00066454
    • SCHEMBL992236
    • Butyl (S)-2-hydroxypropanoate
    • butyl (2S)-2-oxidanylpropanoate
    • MRABAEUHTLLEML-LURJTMIESA-N
    • Lactic acid, n-butyl ester, (S)
    • Tox21_301317
    • Butyl (S)-(-)-lactate, >=97%
    • NCGC00255968-01
    • (2S)-2-hydroxypropanoic acid butyl ester
    • AS-86837
    • Butyl (S)-(-)-lactate, >=97%, FG
    • CAS-34451-19-9
    • CS-0451298
    • NS00088089
    • A822242
    • Q27256269
    • (-)-Butyl L-lactate, >=97.0% (sum of enantiomers, GC)

  • Applications

    Butyl (S)-(−)-lactate, also known as n-butyl (S)-2-hydroxypropanoate, is a bio-based lactic ester widely employed as a green solvent in paints, inks and industrial cleaners because of its low evaporation rate, mild odor and rapid biodegradability; its S-(−) stereochemistry offers high enantioselectivity when the compound is used as a chiral building block for pharmaceutical, agrochemical and food-additive synthesis and for chromatographic resolution of optically active substances; in cosmetics it serves as a flavor carrier, sensory enhancer and pigment dispersant; in materials science the ester acts as a viscosity modifier and gloss improver for alkyds, polyurethanes and biopolymer blends, and it is regarded as an environmentally friendly alternative to petroleum-derived solvents in zero-VOC coating systems.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 2529.65
    methanol 4926.74
    isopropanol 1602.3
    water 28.93
    ethyl acetate 728.06
    n-propanol 1601.16
    acetone 1485.42
    n-butanol 1315.73
    acetonitrile 946.75
    DMF 1935.55
    toluene 126.04
    isobutanol 1094.78
    1,4-dioxane 1495.07
    methyl acetate 688.03
    THF 1343.43
    2-butanone 756.25
    n-pentanol 892.46
    sec-butanol 1260.44
    n-hexane 50.87
    ethylene glycol 853.9
    NMP 1411.94
    cyclohexane 112.07
    DMSO 2956.85
    n-butyl acetate 709.98
    n-octanol 320.82
    chloroform 1185.54
    n-propyl acetate 544.72
    acetic acid 3744.31
    dichloromethane 1201.48
    cyclohexanone 1113.54
    propylene glycol 746.52
    isopropyl acetate 408.36
    DMAc 1192.4
    2-ethoxyethanol 1357.38
    isopentanol 1019.17
    n-heptane 33.72
    ethyl formate 901.95
    1,2-dichloroethane 832.3
    n-hexanol 718.44
    2-methoxyethanol 2328.39
    isobutyl acetate 302.6
    tetrachloromethane 171.31
    n-pentyl acetate 378.58
    transcutol 2639.42
    n-heptanol 321.31
    ethylbenzene 130.78
    MIBK 368.58
    2-propoxyethanol 1028.0
    tert-butanol 1870.22
    MTBE 816.18
    2-butoxyethanol 616.12
    propionic acid 1400.68
    o-xylene 152.32
    formic acid 2180.84
    diethyl ether 528.75
    m-xylene 120.95
    p-xylene 207.27
    chlorobenzene 360.89
    dimethyl carbonate 185.01
    n-octane 18.5
    formamide 2220.09
    cyclopentanone 1123.83
    2-pentanone 631.02
    anisole 358.25
    cyclopentyl methyl ether 504.83
    gamma-butyrolactone 1502.73
    1-methoxy-2-propanol 1169.02
    pyridine 809.17
    3-pentanone 343.47
    furfural 1386.88
    n-dodecane 16.86
    diethylene glycol 1015.93
    diisopropyl ether 138.65
    tert-amyl alcohol 1532.21
    acetylacetone 718.29
    n-hexadecane 18.75
    acetophenone 408.41
    methyl propionate 475.4
    isopentyl acetate 600.09
    trichloroethylene 1547.18
    n-nonanol 242.67
    cyclohexanol 956.92
    benzyl alcohol 480.86
    2-ethylhexanol 384.98
    isooctanol 254.1
    dipropyl ether 228.31
    1,2-dichlorobenzene 367.0
    ethyl lactate 274.3
    propylene carbonate 790.69
    n-methylformamide 1507.66
    2-pentanol 745.51
    n-pentane 49.93
    1-propoxy-2-propanol 687.13
    1-methoxy-2-propyl acetate 466.76
    2-(2-methoxypropoxy) propanol 461.44
    mesitylene 98.26
    ε-caprolactone 1056.22
    p-cymene 114.86
    epichlorohydrin 1301.42
    1,1,1-trichloroethane 535.84
    2-aminoethanol 1331.32
    morpholine-4-carbaldehyde 1323.07
    sulfolane 1717.93
    2,2,4-trimethylpentane 47.26
    2-methyltetrahydrofuran 1006.15
    n-hexyl acetate 506.24
    isooctane 29.53
    2-(2-butoxyethoxy)ethanol 715.52
    sec-butyl acetate 308.79
    tert-butyl acetate 439.73
    decalin 56.77
    glycerin 1001.48
    diglyme 1279.77
    acrylic acid 1316.24
    isopropyl myristate 147.62
    n-butyric acid 1739.59
    acetyl acetate 502.53
    di(2-ethylhexyl) phthalate 192.87
    ethyl propionate 356.83
    nitromethane 3211.74
    1,2-diethoxyethane 599.51
    benzonitrile 528.76
    trioctyl phosphate 142.79
    1-bromopropane 354.64
    gamma-valerolactone 1534.46
    n-decanol 165.31
    triethyl phosphate 171.09
    4-methyl-2-pentanol 345.67
    propionitrile 649.84
    vinylene carbonate 779.26
    1,1,2-trichlorotrifluoroethane 1254.61
    DMS 328.74
    cumene 111.33
    2-octanol 218.23
    2-hexanone 508.72
    octyl acetate 215.4
    limonene 186.53
    1,2-dimethoxyethane 1585.06
    ethyl orthosilicate 171.47
    tributyl phosphate 193.21
    diacetone alcohol 657.59
    N,N-dimethylaniline 269.28
    acrylonitrile 947.84
    aniline 405.83
    1,3-propanediol 1700.67
    bromobenzene 304.48
    dibromomethane 717.71
    1,1,2,2-tetrachloroethane 1298.4
    2-methyl-cyclohexyl acetate 302.18
    tetrabutyl urea 232.26
    diisobutyl methanol 193.85
    2-phenylethanol 401.5
    styrene 173.26
    dioctyl adipate 254.72
    dimethyl sulfate 377.8
    ethyl butyrate 374.76
    methyl lactate 378.63
    butyl lactate 363.62
    diethyl carbonate 252.32
    propanediol butyl ether 673.89
    triethyl orthoformate 258.72
    p-tert-butyltoluene 105.92
    methyl 4-tert-butylbenzoate 344.41
    morpholine 1732.29
    tert-butylamine 980.86
    n-dodecanol 121.46
    dimethoxymethane 714.68
    ethylene carbonate 634.99
    cyrene 423.5
    2-ethoxyethyl acetate 465.58
    2-ethylhexyl acetate 403.35
    1,2,4-trichlorobenzene 431.3
    4-methylpyridine 744.38
    dibutyl ether 255.14
    2,6-dimethyl-4-heptanol 193.85
    DEF 827.57
    dimethyl isosorbide 629.72
    tetrachloroethylene 1012.77
    eugenol 381.9
    triacetin 420.82
    span 80 434.98
    1,4-butanediol 750.28
    1,1-dichloroethane 651.53
    2-methyl-1-pentanol 766.99
    methyl formate 1079.56
    2-methyl-1-butanol 985.84
    n-decane 26.71
    butyronitrile 785.4
    3,7-dimethyl-1-octanol 298.99
    1-chlorooctane 134.05
    1-chlorotetradecane 50.67
    n-nonane 26.66
    undecane 20.2
    tert-butylcyclohexane 48.73
    cyclooctane 27.55
    cyclopentanol 1026.86
    tetrahydropyran 1036.55
    tert-amyl methyl ether 526.01
    2,5,8-trioxanonane 791.9
    1-hexene 211.48
    2-isopropoxyethanol 735.98
    2,2,2-trifluoroethanol 835.06
    methyl butyrate 671.62

    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