Lactaldehyde

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  • Identifiers

    CAS number
    598-35-6

    Molecular formula
    C3H6O2

    SMILES
    CC(C=O)O

    Safety labels

    Irritant
    Irritant

  • Odor profile

    Fragrance
    Caramellic 47.68%
    Sweet 40.39%
    Buttery 40.24%
    Pungent 39.87%
    Ethereal 39.55%
    Green 39.21%
    Sharp 33.31%
    Fatty 31.68%
    Nutty 30.2%
    Alcoholic 29.38%

     

    Flavor
    Pungent 46.56%
    Odorless 35.78%
    Butter 29.92%
    Sour 29.76%
    Buttery 29.21%
    Sweet 28.86%
    Acidic 28.42%
    Ethereal 28.04%
    Creamy 27.91%
    Sharp 25.94%

     

    Odor impact est.
    High

  • Properties

    XLogP3-AA
    -0.5

    pKa est.
    6.64 (neutral)

    Molecular weight
    74.08 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Fast

    Boiling point est.
    167°C

    Flash point

    • 55.82 ˚C est.

  • Synonyms

    • 2-Hydroxypropanal
    • lactaldehyde
    • 598-35-6
    • DL-lactaldehyde
    • 2-Hydroxypropionaldehyde
    • Propanal, 2-hydroxy-
    • S468FB0QE4
    • CHEBI:18419
    • DTXSID60862267
    • RefChem:152038
    • GlyTouCan:G27176LA
    • DTXCID20811059
    • G27176LA
    • BS76EN9C35
    • Racemic-glycerol formal
    • (+-)-2-Hydroxypropanal
    • lactald
    • Alpha-hydroxypropionaldehyde
    • Propanal, 2-hydroxy-, (+-)-
    • HYDROXYPROPANAL
    • Propanal, 2-hydroxy
    • LACTALDEHYDE, DL-
    • UNII-S468FB0QE4
    • SCHEMBL61233
    • SCHEMBL289517
    • Propanal, 2-hydroxy- (9CI)
    • SCHEMBL1870416
    • SCHEMBL1870527
    • SCHEMBL7952012
    • Lactaldehyde (6CI,7CI,8CI)
    • LACTALDEHYDE, (+/-)-
    • AKOS015329096
    • DB-343146
    • C05999
    • EN300-1600489
    • A901946
    • Q4381828
    • 598-35-6

  • Applications

    Lactaldehyde, CAS 598-35-6, is primarily used as a reactive intermediate in organic synthesis, serving as a building block for hydroxylated aldehydes and related derivatives. It is commonly evaluated as a precursor for aroma and flavor compounds in fragrance and flavor applications. In cosmetics and personal care, it can function as a fragrance intermediate or component in formulation work. In the polymers and plastics sector, it is used as a versatile building block for hydroxy-functional polymers and as a precursor to specialty polyols. It also finds use in coatings and inks as a reactive intermediate enabling further functionalization.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 160.46
    methanol 414.88
    isopropanol 63.43
    water 1175.45
    ethyl acetate 11.28
    n-propanol 80.54
    acetone 41.05
    n-butanol 58.61
    acetonitrile 33.39
    DMF 231.53
    toluene 1.4
    isobutanol 46.53
    1,4-dioxane 39.36
    methyl acetate 17.32
    THF 40.67
    2-butanone 19.3
    n-pentanol 31.33
    sec-butanol 45.45
    n-hexane 1.46
    ethylene glycol 301.97
    NMP 169.08
    cyclohexane 1.88
    DMSO 188.19
    n-butyl acetate 14.17
    n-octanol 17.96
    chloroform 8.26
    n-propyl acetate 11.89
    acetic acid 393.5
    dichloromethane 10.97
    cyclohexanone 33.99
    propylene glycol 173.89
    isopropyl acetate 7.03
    DMAc 154.15
    2-ethoxyethanol 108.31
    isopentanol 39.22
    n-heptane 2.49
    ethyl formate 34.38
    1,2-dichloroethane 8.29
    n-hexanol 30.71
    2-methoxyethanol 215.02
    isobutyl acetate 6.94
    tetrachloromethane 3.32
    n-pentyl acetate 9.87
    transcutol 175.2
    n-heptanol 17.58
    ethylbenzene 1.95
    MIBK 10.26
    2-propoxyethanol 74.33
    tert-butanol 63.6
    MTBE 11.79
    2-butoxyethanol 48.26
    propionic acid 115.85
    o-xylene 3.32
    formic acid 690.63
    diethyl ether 7.77
    m-xylene 2.39
    p-xylene 3.01
    chlorobenzene 3.21
    dimethyl carbonate 10.93
    n-octane 1.03
    formamide 391.23
    cyclopentanone 39.71
    2-pentanone 14.09
    anisole 9.6
    cyclopentyl methyl ether 14.0
    gamma-butyrolactone 59.12
    1-methoxy-2-propanol 95.98
    pyridine 16.95
    3-pentanone 9.35
    furfural 84.88
    n-dodecane 1.01
    diethylene glycol 143.58
    diisopropyl ether 3.22
    tert-amyl alcohol 50.6
    acetylacetone 19.26
    n-hexadecane 1.0
    acetophenone 15.24
    methyl propionate 14.84
    isopentyl acetate 12.92
    trichloroethylene 15.05
    n-nonanol 14.62
    cyclohexanol 35.49
    benzyl alcohol 20.79
    2-ethylhexanol 15.92
    isooctanol 14.34
    dipropyl ether 9.02
    1,2-dichlorobenzene 5.17
    ethyl lactate 23.26
    propylene carbonate 33.2
    n-methylformamide 175.66
    2-pentanol 23.94
    n-pentane 1.59
    1-propoxy-2-propanol 46.66
    1-methoxy-2-propyl acetate 19.49
    2-(2-methoxypropoxy) propanol 54.59
    mesitylene 2.61
    ε-caprolactone 36.68
    p-cymene 4.31
    epichlorohydrin 33.21
    1,1,1-trichloroethane 4.08
    2-aminoethanol 266.37
    morpholine-4-carbaldehyde 148.91
    sulfolane 93.05
    2,2,4-trimethylpentane 1.71
    2-methyltetrahydrofuran 23.82
    n-hexyl acetate 15.7
    isooctane 1.11
    2-(2-butoxyethoxy)ethanol 69.28
    sec-butyl acetate 6.32
    tert-butyl acetate 10.22
    decalin 1.43
    glycerin 300.43
    diglyme 102.29
    acrylic acid 155.09
    isopropyl myristate 6.91
    n-butyric acid 76.65
    acetyl acetate 10.87
    di(2-ethylhexyl) phthalate 15.27
    ethyl propionate 9.33
    nitromethane 194.01
    1,2-diethoxyethane 18.21
    benzonitrile 12.5
    trioctyl phosphate 11.31
    1-bromopropane 3.15
    gamma-valerolactone 84.34
    n-decanol 11.02
    triethyl phosphate 10.83
    4-methyl-2-pentanol 13.41
    propionitrile 17.91
    vinylene carbonate 35.61
    1,1,2-trichlorotrifluoroethane 96.1
    DMS 13.91
    cumene 2.97
    2-octanol 9.86
    2-hexanone 11.82
    octyl acetate 10.57
    limonene 6.83
    1,2-dimethoxyethane 77.85
    ethyl orthosilicate 10.1
    tributyl phosphate 12.4
    diacetone alcohol 35.06
    N,N-dimethylaniline 12.14
    acrylonitrile 33.69
    aniline 10.38
    1,3-propanediol 204.95
    bromobenzene 1.81
    dibromomethane 5.94
    1,1,2,2-tetrachloroethane 12.46
    2-methyl-cyclohexyl acetate 14.6
    tetrabutyl urea 19.22
    diisobutyl methanol 9.96
    2-phenylethanol 18.32
    styrene 2.22
    dioctyl adipate 15.63
    dimethyl sulfate 26.53
    ethyl butyrate 13.35
    methyl lactate 40.49
    butyl lactate 22.37
    diethyl carbonate 9.98
    propanediol butyl ether 64.04
    triethyl orthoformate 11.87
    p-tert-butyltoluene 4.34
    methyl 4-tert-butylbenzoate 24.6
    morpholine 67.02
    tert-butylamine 27.88
    n-dodecanol 8.71
    dimethoxymethane 41.52
    ethylene carbonate 25.07
    cyrene 59.58
    2-ethoxyethyl acetate 16.25
    2-ethylhexyl acetate 9.61
    1,2,4-trichlorobenzene 6.94
    4-methylpyridine 13.13
    dibutyl ether 7.74
    2,6-dimethyl-4-heptanol 9.96
    DEF 39.87
    dimethyl isosorbide 59.22
    tetrachloroethylene 13.36
    eugenol 34.67
    triacetin 26.11
    span 80 47.88
    1,4-butanediol 101.88
    1,1-dichloroethane 4.14
    2-methyl-1-pentanol 26.63
    methyl formate 96.84
    2-methyl-1-butanol 40.94
    n-decane 1.34
    butyronitrile 17.2
    3,7-dimethyl-1-octanol 16.56
    1-chlorooctane 4.03
    1-chlorotetradecane 2.19
    n-nonane 1.28
    undecane 1.12
    tert-butylcyclohexane 1.67
    cyclooctane 0.89
    cyclopentanol 48.79
    tetrahydropyran 17.18
    tert-amyl methyl ether 12.14
    2,5,8-trioxanonane 87.61
    1-hexene 3.26
    2-isopropoxyethanol 53.69
    2,2,2-trifluoroethanol 177.66
    methyl butyrate 17.67

    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