Butanediol

Overview IFRA Request a quote

  • Identifiers

    CAS number
    25265-75-2

    Molecular formula
    C4H10O2

    SMILES
    CCCC(O)O

    Safety labels

  • Odor profile

    Fragrance
    Fruity 61.94%
    Alcoholic 48.16%
    Ethereal 43.81%
    Green 41.68%
    Fermented 41.22%
    Pungent 35.46%
    Odorless 34.3%
    Winey 31.96%
    Sweet 30.36%
    Sharp 30.22%

     

    Flavor
    Bitter 48.7%
    Odorless 47.33%
    Alcoholic 43.38%
    Sweet 39.49%
    Fusel 32.29%
    Fruit 30.92%
    Pungent 29.24%
    Oil 27.91%
    Musty 27.09%
    Alcohol 26.62%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    0.4

    pKa est.
    8.84 (weak base)

    Molecular weight
    90.12 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Moderately fast

    Boiling point est.
    160°C

    Flash point

    • 82.95 ˚C est.

  • Synonyms

    • butanediol
    • butane-1,1-diol
    • 25265-75-2
    • TMS4MGA0H4
    • DTXSID7074745
    • RefChem:571272
    • DTXCID8037255
    • CHEBI:52684
    • 607-675-6
    • UNII-TMS4MGA0H4
    • butane diol
    • starbld0029295
    • SCHEMBL28703
    • SCHEMBL42275
    • SCHEMBL42276
    • SCHEMBL691400
    • SCHEMBL1122891
    • SCHEMBL4445919
    • SCHEMBL4556119
    • SCHEMBL4556120
    • SCHEMBL6675263
    • 99801-86-2
    • NS00113659
    • 25265-75-2

  • Applications

    Butanediol (CAS 25265-75-2) is a versatile diol used as a polymer monomer and processing aid in several industries: it is a key feedstock for polyesters such as polybutylene terephthalate (PBT) and polybutylene succinate (PBS), and it also acts as a diol chain extender in polyurethanes to enhance flexibility and toughness. It can be converted into other value chemicals, notably gamma-butyrolactone (GBL) and related solvents, making it an important chemical intermediate. In addition, Butanediol is employed as a solvent and processing aid in coatings, inks, and cleaning formulations, where its polarity and boiling range support resin dissolution and film formation. The use of Butanediol is subject to local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 584.73
    methanol 1229.99
    isopropanol 317.26
    water 198.08
    ethyl acetate 67.81
    n-propanol 361.65
    acetone 162.88
    n-butanol 279.27
    acetonitrile 81.8
    DMF 321.0
    toluene 4.99
    isobutanol 213.57
    1,4-dioxane 219.74
    methyl acetate 61.02
    THF 411.51
    2-butanone 71.43
    n-pentanol 140.77
    sec-butanol 207.89
    n-hexane 14.91
    ethylene glycol 547.23
    NMP 341.65
    cyclohexane 13.38
    DMSO 517.91
    n-butyl acetate 76.6
    n-octanol 95.19
    chloroform 38.4
    n-propyl acetate 51.73
    acetic acid 916.01
    dichloromethane 36.27
    cyclohexanone 165.39
    propylene glycol 416.22
    isopropyl acetate 45.02
    DMAc 150.95
    2-ethoxyethanol 255.38
    isopentanol 176.32
    n-heptane 19.58
    ethyl formate 87.07
    1,2-dichloroethane 29.21
    n-hexanol 207.95
    2-methoxyethanol 518.97
    isobutyl acetate 34.09
    tetrachloromethane 15.68
    n-pentyl acetate 57.63
    transcutol 490.17
    n-heptanol 101.29
    ethylbenzene 5.34
    MIBK 52.37
    2-propoxyethanol 312.13
    tert-butanol 334.23
    MTBE 63.76
    2-butoxyethanol 173.92
    propionic acid 379.26
    o-xylene 8.24
    formic acid 761.03
    diethyl ether 52.93
    m-xylene 8.65
    p-xylene 8.53
    chlorobenzene 14.63
    dimethyl carbonate 23.84
    n-octane 6.39
    formamide 442.69
    cyclopentanone 232.04
    2-pentanone 77.44
    anisole 25.91
    cyclopentyl methyl ether 118.04
    gamma-butyrolactone 317.7
    1-methoxy-2-propanol 314.4
    pyridine 52.29
    3-pentanone 39.85
    furfural 210.99
    n-dodecane 5.52
    diethylene glycol 388.01
    diisopropyl ether 21.57
    tert-amyl alcohol 221.3
    acetylacetone 94.85
    n-hexadecane 5.62
    acetophenone 33.48
    methyl propionate 57.11
    isopentyl acetate 62.23
    trichloroethylene 46.92
    n-nonanol 77.29
    cyclohexanol 180.69
    benzyl alcohol 48.83
    2-ethylhexanol 95.62
    isooctanol 73.11
    dipropyl ether 65.11
    1,2-dichlorobenzene 18.07
    ethyl lactate 54.66
    propylene carbonate 134.49
    n-methylformamide 279.59
    2-pentanol 138.13
    n-pentane 12.28
    1-propoxy-2-propanol 216.45
    1-methoxy-2-propyl acetate 77.71
    2-(2-methoxypropoxy) propanol 135.88
    mesitylene 9.58
    ε-caprolactone 158.22
    p-cymene 13.84
    epichlorohydrin 142.77
    1,1,1-trichloroethane 21.26
    2-aminoethanol 622.42
    morpholine-4-carbaldehyde 295.02
    sulfolane 381.05
    2,2,4-trimethylpentane 8.32
    2-methyltetrahydrofuran 213.34
    n-hexyl acetate 86.88
    isooctane 7.68
    2-(2-butoxyethoxy)ethanol 220.46
    sec-butyl acetate 29.42
    tert-butyl acetate 61.95
    decalin 6.56
    glycerin 580.94
    diglyme 254.89
    acrylic acid 345.62
    isopropyl myristate 37.26
    n-butyric acid 339.6
    acetyl acetate 53.9
    di(2-ethylhexyl) phthalate 48.95
    ethyl propionate 39.25
    nitromethane 424.57
    1,2-diethoxyethane 83.96
    benzonitrile 38.17
    trioctyl phosphate 44.46
    1-bromopropane 17.4
    gamma-valerolactone 307.98
    n-decanol 58.03
    triethyl phosphate 29.44
    4-methyl-2-pentanol 78.74
    propionitrile 62.91
    vinylene carbonate 99.0
    1,1,2-trichlorotrifluoroethane 210.63
    DMS 45.26
    cumene 8.47
    2-octanol 60.09
    2-hexanone 58.21
    octyl acetate 53.83
    limonene 26.06
    1,2-dimethoxyethane 222.98
    ethyl orthosilicate 29.56
    tributyl phosphate 47.29
    diacetone alcohol 142.75
    N,N-dimethylaniline 24.61
    acrylonitrile 81.58
    aniline 34.27
    1,3-propanediol 553.27
    bromobenzene 8.68
    dibromomethane 23.95
    1,1,2,2-tetrachloroethane 50.33
    2-methyl-cyclohexyl acetate 53.21
    tetrabutyl urea 60.5
    diisobutyl methanol 49.39
    2-phenylethanol 61.25
    styrene 6.01
    dioctyl adipate 57.39
    dimethyl sulfate 52.91
    ethyl butyrate 51.59
    methyl lactate 93.34
    butyl lactate 78.16
    diethyl carbonate 30.46
    propanediol butyl ether 204.92
    triethyl orthoformate 41.69
    p-tert-butyltoluene 15.03
    methyl 4-tert-butylbenzoate 71.64
    morpholine 293.4
    tert-butylamine 165.39
    n-dodecanol 44.91
    dimethoxymethane 120.64
    ethylene carbonate 86.29
    cyrene 114.58
    2-ethoxyethyl acetate 66.63
    2-ethylhexyl acetate 45.53
    1,2,4-trichlorobenzene 24.21
    4-methylpyridine 37.6
    dibutyl ether 46.38
    2,6-dimethyl-4-heptanol 49.39
    DEF 98.66
    dimethyl isosorbide 182.23
    tetrachloroethylene 52.61
    eugenol 89.46
    triacetin 80.34
    span 80 168.34
    1,4-butanediol 220.39
    1,1-dichloroethane 18.13
    2-methyl-1-pentanol 100.72
    methyl formate 152.64
    2-methyl-1-butanol 161.37
    n-decane 8.52
    butyronitrile 73.03
    3,7-dimethyl-1-octanol 78.15
    1-chlorooctane 24.99
    1-chlorotetradecane 11.74
    n-nonane 8.48
    undecane 6.51
    tert-butylcyclohexane 8.5
    cyclooctane 5.24
    cyclopentanol 307.09
    tetrahydropyran 148.54
    tert-amyl methyl ether 52.94
    2,5,8-trioxanonane 221.77
    1-hexene 24.9
    2-isopropoxyethanol 146.02
    2,2,2-trifluoroethanol 264.61
    methyl butyrate 62.58

    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