1,2-Pentanediol

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  • Identifiers

    CAS number
    5343-92-0

    Molecular formula
    C5H12O2

    SMILES
    CCCC(CO)O

    Safety labels

    Corrosive
    Corrosive

    Health Hazard
    Health

  • Odor profile

    Fragrance
    Fruity 57.78%
    Alcoholic 49.29%
    Sweet 40.15%
    Ethereal 38.95%
    Oily 38.91%
    Fermented 37.95%
    Buttery 35.51%
    Solvent 33.94%
    Odorless 33.8%
    Caramellic 27.96%

     

    Flavor
    Sweet 52.47%
    Odorless 49.15%
    Alcoholic 36.99%
    Very slight 26.05%
    Musty 25.89%
    Sweet-like 25.3%
    Fruit 24.89%
    Bitter 24.42%
    Pungent 24.22%
    Fusel 23.74%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    0.2

    pKa est.
    8.22 (weak base)

    Molecular weight
    104.15 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Slow

    Boiling point est.
    207°C

    Flash point

    • 95.07 ˚C est.

  • Synonyms

    • 1,2-Pentanediol
    • 5343-92-0
    • 1,2-Dihydroxypentane
    • NSC-513
    • 50C1307PZG
    • DTXSID10863522
    • RefChem:860099
    • DTXCID80812123
    • 226-285-3
    • Pentylene Glycol
    • Pentane-1,2-diol
    • MFCD00010736
    • EINECS 226-285-3
    • BRN 1719151
    • UNII-50C1307PZG
    • AI3-03317
    • NSC 513
    • (+/-)-Pentane-1,2-diol; 1,2-Dihydroxypentane; 1,2-Pentylene Glycol; Diol PD; Hydrolite 5; NSC 513
    • 1,a2-aPentanediol
    • EC 226-285-3
    • 1,2-Pentanediol, 96%
    • SCHEMBL62155
    • 3-01-00-02191 (Beilstein Handbook Reference)
    • SCHEMBL269947
    • SCHEMBL270137
    • SCHEMBL270308
    • SCHEMBL270817
    • SCHEMBL271205
    • SCHEMBL624558
    • NSC513
    • SCHEMBL1878149
    • SCHEMBL2879718
    • WCVRQHFDJLLWFE-UHFFFAOYSA-
    • PENTYLENE GLYCOL [WHO-DD]
    • (+/-)-1,2-PENTANEDIOL
    • AKOS009156977
    • FP30949
    • AS-40006
    • SY032914
    • CS-0017222
    • NS00001259
    • P1178
    • EN300-52018
    • F242929
    • Q3374899
    • InChI=1/C5H12O2/c1-2-3-5(7)4-6/h5-7H,2-4H2,1H3
    • 5343-92-0

  • Applications

    1,2-Pentanediol (CAS 5343-92-0) is a versatile diol used across several industries as a solvent and humectant, and as a chemical intermediate. In cosmetics and personal care, it functions as a humectant and solvent in formulations; in polymers and plastics, it is used as a polyol component, chain extender, or plasticizer for polyurethanes and related materials; in coatings and inks, it serves as a processing solvent and co-solvent to improve formulation stability; in adhesives, it can act as a solvent and processing aid; in cleaning products and industrial formulations, it is used as a solvent or cleansing component. It is commonly evaluated as an intermediate in organic synthesis for various chemical products, with use subject to local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 407.65
    methanol 1010.96
    isopropanol 243.08
    water 75.49
    ethyl acetate 44.58
    n-propanol 283.2
    acetone 76.46
    n-butanol 216.3
    acetonitrile 51.53
    DMF 183.13
    toluene 5.74
    isobutanol 173.85
    1,4-dioxane 162.29
    methyl acetate 49.85
    THF 259.04
    2-butanone 48.12
    n-pentanol 110.13
    sec-butanol 160.5
    n-hexane 5.52
    ethylene glycol 463.62
    NMP 229.61
    cyclohexane 8.34
    DMSO 506.91
    n-butyl acetate 80.13
    n-octanol 65.95
    chloroform 58.27
    n-propyl acetate 45.01
    acetic acid 547.59
    dichloromethane 45.5
    cyclohexanone 129.85
    propylene glycol 309.04
    isopropyl acetate 30.07
    DMAc 104.56
    2-ethoxyethanol 217.48
    isopentanol 138.3
    n-heptane 12.27
    ethyl formate 69.72
    1,2-dichloroethane 29.89
    n-hexanol 193.47
    2-methoxyethanol 454.23
    isobutyl acetate 32.96
    tetrachloromethane 23.36
    n-pentyl acetate 42.07
    transcutol 382.84
    n-heptanol 90.62
    ethylbenzene 6.16
    MIBK 36.42
    2-propoxyethanol 297.29
    tert-butanol 277.19
    MTBE 57.58
    2-butoxyethanol 164.99
    propionic acid 266.04
    o-xylene 9.48
    formic acid 574.79
    diethyl ether 32.55
    m-xylene 9.01
    p-xylene 9.23
    chlorobenzene 19.39
    dimethyl carbonate 16.46
    n-octane 4.41
    formamide 308.78
    cyclopentanone 163.56
    2-pentanone 42.88
    anisole 26.26
    cyclopentyl methyl ether 74.47
    gamma-butyrolactone 219.78
    1-methoxy-2-propanol 236.93
    pyridine 52.53
    3-pentanone 23.23
    furfural 200.95
    n-dodecane 3.73
    diethylene glycol 370.92
    diisopropyl ether 13.83
    tert-amyl alcohol 166.61
    acetylacetone 59.18
    n-hexadecane 3.84
    acetophenone 36.3
    methyl propionate 37.04
    isopentyl acetate 69.53
    trichloroethylene 62.75
    n-nonanol 53.95
    cyclohexanol 146.05
    benzyl alcohol 55.41
    2-ethylhexanol 89.93
    isooctanol 70.54
    dipropyl ether 49.0
    1,2-dichlorobenzene 25.09
    ethyl lactate 52.91
    propylene carbonate 107.55
    n-methylformamide 196.38
    2-pentanol 93.81
    n-pentane 5.23
    1-propoxy-2-propanol 213.38
    1-methoxy-2-propyl acetate 73.83
    2-(2-methoxypropoxy) propanol 121.19
    mesitylene 9.56
    ε-caprolactone 121.54
    p-cymene 16.81
    epichlorohydrin 126.63
    1,1,1-trichloroethane 25.59
    2-aminoethanol 497.84
    morpholine-4-carbaldehyde 224.89
    sulfolane 333.85
    2,2,4-trimethylpentane 6.15
    2-methyltetrahydrofuran 138.32
    n-hexyl acetate 60.28
    isooctane 5.75
    2-(2-butoxyethoxy)ethanol 171.97
    sec-butyl acetate 26.29
    tert-butyl acetate 43.34
    decalin 5.75
    glycerin 472.73
    diglyme 259.38
    acrylic acid 252.45
    isopropyl myristate 27.6
    n-butyric acid 256.52
    acetyl acetate 33.58
    di(2-ethylhexyl) phthalate 43.09
    ethyl propionate 26.93
    nitromethane 247.6
    1,2-diethoxyethane 62.79
    benzonitrile 45.06
    trioctyl phosphate 37.86
    1-bromopropane 16.51
    gamma-valerolactone 232.78
    n-decanol 40.78
    triethyl phosphate 31.13
    4-methyl-2-pentanol 58.17
    propionitrile 48.14
    vinylene carbonate 90.36
    1,1,2-trichlorotrifluoroethane 217.12
    DMS 36.44
    cumene 9.3
    2-octanol 47.53
    2-hexanone 42.1
    octyl acetate 37.92
    limonene 27.76
    1,2-dimethoxyethane 169.37
    ethyl orthosilicate 31.3
    tributyl phosphate 38.81
    diacetone alcohol 111.56
    N,N-dimethylaniline 24.08
    acrylonitrile 69.41
    aniline 38.2
    1,3-propanediol 483.37
    bromobenzene 12.94
    dibromomethane 29.01
    1,1,2,2-tetrachloroethane 66.9
    2-methyl-cyclohexyl acetate 55.27
    tetrabutyl urea 47.97
    diisobutyl methanol 48.84
    2-phenylethanol 70.82
    styrene 7.17
    dioctyl adipate 45.92
    dimethyl sulfate 45.05
    ethyl butyrate 50.32
    methyl lactate 74.44
    butyl lactate 70.07
    diethyl carbonate 30.8
    propanediol butyl ether 163.05
    triethyl orthoformate 44.57
    p-tert-butyltoluene 18.14
    methyl 4-tert-butylbenzoate 67.03
    morpholine 207.25
    tert-butylamine 125.05
    n-dodecanol 32.26
    dimethoxymethane 70.88
    ethylene carbonate 72.77
    cyrene 116.15
    2-ethoxyethyl acetate 50.79
    2-ethylhexyl acetate 48.22
    1,2,4-trichlorobenzene 31.31
    4-methylpyridine 38.8
    dibutyl ether 30.08
    2,6-dimethyl-4-heptanol 48.84
    DEF 63.29
    dimethyl isosorbide 169.04
    tetrachloroethylene 69.5
    eugenol 85.93
    triacetin 63.68
    span 80 132.89
    1,4-butanediol 197.34
    1,1-dichloroethane 21.96
    2-methyl-1-pentanol 88.24
    methyl formate 113.14
    2-methyl-1-butanol 129.49
    n-decane 5.5
    butyronitrile 60.13
    3,7-dimethyl-1-octanol 60.37
    1-chlorooctane 18.87
    1-chlorotetradecane 8.77
    n-nonane 5.34
    undecane 4.38
    tert-butylcyclohexane 7.22
    cyclooctane 3.79
    cyclopentanol 228.24
    tetrahydropyran 104.34
    tert-amyl methyl ether 42.28
    2,5,8-trioxanonane 196.88
    1-hexene 13.8
    2-isopropoxyethanol 131.23
    2,2,2-trifluoroethanol 175.18
    methyl butyrate 49.39

    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