Propylene glycol monostearate

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  • Identifiers

    CAS number
    1323-39-3

    Molecular formula
    C21H42O3

    SMILES
    CCCCCCCCCCCCCCCCCC(=O)OCC(C)O

  • Odor profile

    Fragrance
    Waxy 70.1%
    Fatty 67.78%
    Oily 49.58%
    Odorless 36.46%
    Creamy 31.57%
    Dairy 24.84%
    Buttery 24.81%
    Sweet 24.48%
    Milky 23.39%
    Coconut 20.08%

     

    Flavor
    Waxy 64.99%
    Fatty 51.32%
    Oily 49.36%
    Mild 44.62%
    Soapy 39.2%
    Coconut 34.31%
    Fat 33.91%
    Creamy 33.75%
    Bland 30.08%
    Faint 28.14%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    8.3

    pKa est.
    7.95 (neutral)

    Molecular weight
    342.6 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Boiling point est.
    417°C

    Melting point expt.

    • 50 °C

    Flash point

    • 185.34 ˚C est.

    Solubility expt.

    • insoluble in water
    • soluble in alcohol (in ethanol)

  • Synonyms

    • PROPYLENE GLYCOL MONOSTEARATE
    • 2-Hydroxypropyl stearate
    • 1323-39-3
    • 142-75-6
    • 2-hydroxypropyl octadecanoate
    • Propylene glycol stearate
    • Cerasynt PA
    • Monosteol
    • Prostearin
    • Propylene glycol 1-stearate
    • Octadecanoic acid, 2-hydroxypropyl ester
    • Pegosperse PS
    • Monosteol TG
    • Cerasynt PN
    • Dragil-P
    • Tegin P
    • Propylene glycol 1-monostearate
    • 1,2-Propylene glycol monostearate
    • NOCA
    • Crill 26
    • Nonex 32
    • Octadecanoic acid, monoester with 1,2-propanediol
    • Emerest 2381
    • Noca (VAN)
    • Propyleneglycol stearate
    • Emcol PS-50 RHP
    • Atlas G 924
    • 1,2-Propanediol monostearate
    • Propylene glycol octadecanoate
    • Propylene glycol, monostearate
    • FEMA No. 2942
    • Propylene glycol monooctadecanoate
    • 1,2-Propanediol monooctadecanoate
    • Propylene glycol stearic acid ester
    • Stearic acid, monoester with 1,2-propanediol
    • Stearic acid, monoester with propane-1,2-diol
    • 32I3MRN561
    • NCGC00159505-02
    • Octadecanoic acid,2-hydroxypropyl ester
    • MFCD00021902
    • UNII-32I3MRN561
    • NSC 4841
    • EINECS 205-557-5
    • EINECS 215-354-3
    • AI3-00975
    • propyleneglycolmonostearate
    • DSSTox_CID_7381
    • DSSTox_RID_78430
    • UNII-MZM1I680W0
    • DSSTox_GSID_27381
    • SCHEMBL35521
    • MZM1I680W0
    • Propylene glycol palmitostearate
    • CHEMBL1551666
    • FEMA NO. 4208
    • FEMA 2942
    • DTXSID30872292
    • CHEBI:177857
    • FKOKUHFZNIUSLW-UHFFFAOYSA-N
    • Propylene glycol monostearate [NF]
    • 1, 2-Propylene glycol monostearate
    • Tox21_111724
    • LMFA07011008
    • 1,2-PROPANEDIOL, 1-STEARATE
    • AKOS015913883
    • 1-PROPYLENE GLYCOL MONOSTEARATE
    • HY-W822030
    • NCGC00159505-03
    • Propylene glycol monostearate, tech grade
    • CAS-1323-39-3
    • STEARIC ACID, 2-HYDROXYPROPYL ESTER
    • NS00041805
    • (+/-)-1,2-PROPANEDIOL, 1-STEARATE
    • E74410
    • Q27256176
    • 8028-46-4

  • Applications

    Propylene glycol monostearate (CAS 1323-39-3) is a fatty acid ester used primarily as an emollient and surfactant in cosmetics and personal care, where it helps soften skin and improve spreadability. It commonly functions as an emulsifier and thickener in cosmetic systems, aiding the stability of creams and lotions. It is also employed as a surfactant and mild solvent in household cleaning products to improve wetting and dispersion of formulations. In industrial manufacturing, it serves as a processing aid and slip agent for polymers and coatings, facilitating processing and film formation. In pharmaceutical topical formulations, it can act as an emollient and vehicle for active ingredients.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 14.42
    methanol 25.28
    isopropanol 21.52
    water 0.04
    ethyl acetate 173.05
    n-propanol 25.32
    acetone 95.2
    n-butanol 33.59
    acetonitrile 40.77
    DMF 175.54
    toluene 52.36
    isobutanol 32.18
    1,4-dioxane 168.67
    methyl acetate 106.31
    THF 495.88
    2-butanone 144.78
    n-pentanol 35.82
    sec-butanol 40.13
    n-hexane 15.12
    ethylene glycol 2.4
    NMP 486.27
    cyclohexane 90.45
    DMSO 289.47
    n-butyl acetate 227.9
    n-octanol 65.41
    chloroform 452.23
    n-propyl acetate 269.79
    acetic acid 58.91
    dichloromethane 474.82
    cyclohexanone 545.84
    propylene glycol 7.89
    isopropyl acetate 198.81
    DMAc 408.34
    2-ethoxyethanol 99.21
    isopentanol 59.86
    n-heptane 19.11
    ethyl formate 78.22
    1,2-dichloroethane 326.3
    n-hexanol 35.77
    2-methoxyethanol 84.59
    isobutyl acetate 178.71
    tetrachloromethane 116.59
    n-pentyl acetate 399.82
    transcutol 622.44
    n-heptanol 55.12
    ethylbenzene 53.61
    MIBK 203.58
    2-propoxyethanol 99.49
    tert-butanol 69.93
    MTBE 136.07
    2-butoxyethanol 166.62
    propionic acid 59.44
    o-xylene 64.74
    formic acid 12.83
    diethyl ether 81.12
    m-xylene 50.8
    p-xylene 88.2
    chlorobenzene 118.93
    dimethyl carbonate 44.94
    n-octane 11.25
    formamide 27.82
    cyclopentanone 486.5
    2-pentanone 172.87
    anisole 124.45
    cyclopentyl methyl ether 262.41
    gamma-butyrolactone 445.65
    1-methoxy-2-propanol 104.76
    pyridine 177.62
    3-pentanone 146.91
    furfural 312.22
    n-dodecane 6.44
    diethylene glycol 37.7
    diisopropyl ether 56.35
    tert-amyl alcohol 92.38
    acetylacetone 258.42
    n-hexadecane 8.07
    acetophenone 192.05
    methyl propionate 120.4
    isopentyl acetate 240.9
    trichloroethylene 544.27
    n-nonanol 67.64
    cyclohexanol 122.05
    benzyl alcohol 70.55
    2-ethylhexanol 58.32
    isooctanol 67.57
    dipropyl ether 133.04
    1,2-dichlorobenzene 175.7
    ethyl lactate 91.98
    propylene carbonate 275.2
    n-methylformamide 55.91
    2-pentanol 36.73
    n-pentane 8.49
    1-propoxy-2-propanol 132.02
    1-methoxy-2-propyl acetate 209.71
    2-(2-methoxypropoxy) propanol 156.31
    mesitylene 48.58
    ε-caprolactone 469.69
    p-cymene 54.64
    epichlorohydrin 449.19
    1,1,1-trichloroethane 391.56
    2-aminoethanol 9.94
    morpholine-4-carbaldehyde 338.32
    sulfolane 812.84
    2,2,4-trimethylpentane 15.26
    2-methyltetrahydrofuran 347.52
    n-hexyl acetate 321.31
    isooctane 8.32
    2-(2-butoxyethoxy)ethanol 207.58
    sec-butyl acetate 219.12
    tert-butyl acetate 296.95
    decalin 34.35
    glycerin 18.0
    diglyme 542.03
    acrylic acid 40.71
    isopropyl myristate 96.67
    n-butyric acid 154.49
    acetyl acetate 134.8
    di(2-ethylhexyl) phthalate 74.31
    ethyl propionate 213.71
    nitromethane 169.19
    1,2-diethoxyethane 271.31
    benzonitrile 108.54
    trioctyl phosphate 59.06
    1-bromopropane 165.02
    gamma-valerolactone 627.91
    n-decanol 40.98
    triethyl phosphate 132.9
    4-methyl-2-pentanol 40.64
    propionitrile 52.5
    vinylene carbonate 195.51
    1,1,2-trichlorotrifluoroethane 302.52
    DMS 145.84
    cumene 46.93
    2-octanol 60.44
    2-hexanone 205.75
    octyl acetate 120.72
    limonene 102.76
    1,2-dimethoxyethane 339.49
    ethyl orthosilicate 135.67
    tributyl phosphate 86.18
    diacetone alcohol 234.44
    N,N-dimethylaniline 97.94
    acrylonitrile 55.33
    aniline 55.26
    1,3-propanediol 24.42
    bromobenzene 145.95
    dibromomethane 298.43
    1,1,2,2-tetrachloroethane 579.18
    2-methyl-cyclohexyl acetate 213.16
    tetrabutyl urea 136.72
    diisobutyl methanol 54.51
    2-phenylethanol 66.27
    styrene 59.75
    dioctyl adipate 174.13
    dimethyl sulfate 129.39
    ethyl butyrate 248.61
    methyl lactate 56.88
    butyl lactate 208.11
    diethyl carbonate 130.17
    propanediol butyl ether 124.93
    triethyl orthoformate 200.71
    p-tert-butyltoluene 50.65
    methyl 4-tert-butylbenzoate 231.92
    morpholine 238.44
    tert-butylamine 47.81
    n-dodecanol 28.43
    dimethoxymethane 112.3
    ethylene carbonate 187.3
    cyrene 172.3
    2-ethoxyethyl acetate 357.88
    2-ethylhexyl acetate 212.63
    1,2,4-trichlorobenzene 215.28
    4-methylpyridine 184.98
    dibutyl ether 190.39
    2,6-dimethyl-4-heptanol 54.51
    DEF 263.49
    dimethyl isosorbide 365.99
    tetrachloroethylene 359.67
    eugenol 168.4
    triacetin 334.26
    span 80 146.25
    1,4-butanediol 12.95
    1,1-dichloroethane 246.76
    2-methyl-1-pentanol 57.68
    methyl formate 44.45
    2-methyl-1-butanol 52.03
    n-decane 16.29
    butyronitrile 70.95
    3,7-dimethyl-1-octanol 75.06
    1-chlorooctane 86.76
    1-chlorotetradecane 23.69
    n-nonane 16.07
    undecane 9.3
    tert-butylcyclohexane 23.76
    cyclooctane 19.74
    cyclopentanol 111.22
    tetrahydropyran 280.99
    tert-amyl methyl ether 143.1
    2,5,8-trioxanonane 292.05
    1-hexene 39.49
    2-isopropoxyethanol 98.3
    2,2,2-trifluoroethanol 39.46
    methyl butyrate 328.13

    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