2-Ethylhexyl pyroglutamate

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  • Identifiers

    CAS number
    4261-80-7

    Molecular formula
    C13H23NO3

    SMILES
    CCCCC(CC)COC(=O)[C@@H]1CCC(=O)N1

    Safety labels

  • Odor profile

    Fragrance
    Herbal 39.21%
    Mint 33.76%
    Cooling 32.86%
    Odorless 32.84%
    Lactonic 32.43%
    Jasmin 26.39%
    Oily 23.55%
    Spicy 23.37%
    Fresh 23.3%
    Milky 20.88%

     

    Flavor
    Bitter 34.09%
    Herbal 25.97%
    Bland 23.96%
    Odorless 22.95%
    Oily 22.54%
    Cedarleaf 21.44%
    Lovage 20.77%
    Fatty 20.43%
    Mild 20.3%
    Waxy 20.3%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    2.7

    pKa est.
    7.56 (neutral)

    Molecular weight
    241.33 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Boiling point est.
    384°C

    Flash point

    • 165.19 ˚C est.

  • Synonyms

    • 2-Ethylhexyl 5-oxo-L-prolinate
    • 4261-80-7
    • 2-ethylhexyl pyroglutamate
    • B4U3S8T62D
    • EINECS 224-241-8
    • UNII-B4U3S8T62D
    • L-PROLINE, 5-OXO-, 2-ETHYLHEXYL ESTER
    • PROLINE, 5-OXO-, 2-ETHYLHEXYL ESTER, L-
    • 2-ETHYLHEXYL 2-PYRROLIDONE-5-CARBOXYLATE, (S)-
    • RefChem:86992
    • 2-ethylhexyl (2S)-5-oxopyrrolidine-2-carboxylate
    • SCHEMBL1978844
    • DTXSID40962613
    • YEMWTVRIHVDMPF-DTIOYNMSSA-N
    • NS00013678
    • NS00082437
    • 2-Ethylhexyl 5-hydroxy-3,4-dihydro-2H-pyrrole-2-carboxylate
    • 2-Ethylhexyl (2S)-5-hydroxy-3,4-dihydro-2H-pyrrole-2-carboxylate
    • 4261-80-7

  • Applications

    2-Ethylhexyl pyroglutamate (CAS 4261-80-7) is the ester of pyroglutamic acid and 2-ethylhexanol, used primarily as a solvent and processing aid in various formulations. In cosmetics and personal care, it is commonly employed as a lightweight solvent and emollient, helping to improve texture and skin feel. In perfumery, it may serve as a solvent carrier for fragrance ingredients and contribute to fragrance distribution within products. In polymers and plastics, it is often used as a plasticizer or processing aid to enhance flexibility and compatibility with polymer matrices. In coatings and inks, it can act as a processing additive to improve film formation and gloss. In cleaning products, it may function as a solvent auxiliary to dissolve residues and improve formulation performance. In adhesives, it can be used to modify viscosity and cure characteristics.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 2066.45
    methanol 3845.38
    isopropanol 1119.89
    water 0.95
    ethyl acetate 1324.31
    n-propanol 997.26
    acetone 1700.3
    n-butanol 818.16
    acetonitrile 1000.19
    DMF 1341.02
    toluene 162.07
    isobutanol 616.63
    1,4-dioxane 790.85
    methyl acetate 853.4
    THF 1196.43
    2-butanone 1028.08
    n-pentanol 504.69
    sec-butanol 664.9
    n-hexane 3.84
    ethylene glycol 143.97
    NMP 714.49
    cyclohexane 9.31
    DMSO 1424.61
    n-butyl acetate 660.12
    n-octanol 104.54
    chloroform 1476.7
    n-propyl acetate 633.8
    acetic acid 1605.36
    dichloromethane 1512.02
    cyclohexanone 1066.53
    propylene glycol 266.83
    isopropyl acetate 877.92
    DMAc 1202.24
    2-ethoxyethanol 1036.26
    isopentanol 709.43
    n-heptane 1.66
    ethyl formate 931.8
    1,2-dichloroethane 889.16
    n-hexanol 279.47
    2-methoxyethanol 1857.34
    isobutyl acetate 393.07
    tetrachloromethane 86.72
    n-pentyl acetate 336.45
    transcutol 2306.49
    n-heptanol 114.46
    ethylbenzene 85.77
    MIBK 537.3
    2-propoxyethanol 728.16
    tert-butanol 809.39
    MTBE 543.16
    2-butoxyethanol 390.83
    propionic acid 670.39
    o-xylene 107.81
    formic acid 628.82
    diethyl ether 432.67
    m-xylene 119.3
    p-xylene 141.3
    chlorobenzene 362.93
    dimethyl carbonate 219.16
    n-octane 1.88
    formamide 953.51
    cyclopentanone 1096.18
    2-pentanone 976.79
    anisole 290.05
    cyclopentyl methyl ether 409.21
    gamma-butyrolactone 1319.01
    1-methoxy-2-propanol 1104.11
    pyridine 820.2
    3-pentanone 399.64
    furfural 1099.58
    n-dodecane 3.03
    diethylene glycol 539.57
    diisopropyl ether 94.1
    tert-amyl alcohol 541.67
    acetylacetone 1017.97
    n-hexadecane 3.59
    acetophenone 382.78
    methyl propionate 621.79
    isopentyl acetate 610.15
    trichloroethylene 1672.25
    n-nonanol 93.45
    cyclohexanol 391.5
    benzyl alcohol 364.79
    2-ethylhexanol 128.12
    isooctanol 100.62
    dipropyl ether 75.23
    1,2-dichlorobenzene 324.52
    ethyl lactate 238.84
    propylene carbonate 809.37
    n-methylformamide 952.84
    2-pentanol 426.74
    n-pentane 4.23
    1-propoxy-2-propanol 445.87
    1-methoxy-2-propyl acetate 565.98
    2-(2-methoxypropoxy) propanol 298.64
    mesitylene 64.26
    ε-caprolactone 1034.19
    p-cymene 48.58
    epichlorohydrin 1485.68
    1,1,1-trichloroethane 604.18
    2-aminoethanol 486.12
    morpholine-4-carbaldehyde 927.7
    sulfolane 964.96
    2,2,4-trimethylpentane 8.22
    2-methyltetrahydrofuran 866.49
    n-hexyl acetate 388.93
    isooctane 6.21
    2-(2-butoxyethoxy)ethanol 497.1
    sec-butyl acetate 431.77
    tert-butyl acetate 591.84
    decalin 10.78
    glycerin 324.59
    diglyme 961.64
    acrylic acid 495.94
    isopropyl myristate 98.14
    n-butyric acid 1611.53
    acetyl acetate 686.46
    di(2-ethylhexyl) phthalate 123.08
    ethyl propionate 421.23
    nitromethane 2143.82
    1,2-diethoxyethane 558.08
    benzonitrile 463.14
    trioctyl phosphate 74.42
    1-bromopropane 329.86
    gamma-valerolactone 1647.68
    n-decanol 62.53
    triethyl phosphate 119.41
    4-methyl-2-pentanol 225.56
    propionitrile 562.61
    vinylene carbonate 708.35
    1,1,2-trichlorotrifluoroethane 883.58
    DMS 314.28
    cumene 63.61
    2-octanol 78.28
    2-hexanone 485.42
    octyl acetate 136.28
    limonene 67.99
    1,2-dimethoxyethane 1085.07
    ethyl orthosilicate 110.91
    tributyl phosphate 112.06
    diacetone alcohol 661.85
    N,N-dimethylaniline 158.25
    acrylonitrile 710.48
    aniline 328.52
    1,3-propanediol 914.32
    bromobenzene 351.02
    dibromomethane 794.83
    1,1,2,2-tetrachloroethane 1188.38
    2-methyl-cyclohexyl acetate 216.02
    tetrabutyl urea 128.22
    diisobutyl methanol 72.34
    2-phenylethanol 288.0
    styrene 123.07
    dioctyl adipate 160.64
    dimethyl sulfate 309.28
    ethyl butyrate 315.48
    methyl lactate 315.6
    butyl lactate 271.46
    diethyl carbonate 201.35
    propanediol butyl ether 365.67
    triethyl orthoformate 174.55
    p-tert-butyltoluene 43.94
    methyl 4-tert-butylbenzoate 228.68
    morpholine 1252.22
    tert-butylamine 297.76
    n-dodecanol 44.57
    dimethoxymethane 730.55
    ethylene carbonate 646.12
    cyrene 280.74
    2-ethoxyethyl acetate 562.8
    2-ethylhexyl acetate 369.46
    1,2,4-trichlorobenzene 370.25
    4-methylpyridine 916.36
    dibutyl ether 120.09
    2,6-dimethyl-4-heptanol 72.34
    DEF 866.03
    dimethyl isosorbide 448.99
    tetrachloroethylene 683.79
    eugenol 247.48
    triacetin 353.92
    span 80 225.35
    1,4-butanediol 308.6
    1,1-dichloroethane 912.39
    2-methyl-1-pentanol 449.4
    methyl formate 601.11
    2-methyl-1-butanol 560.13
    n-decane 4.54
    butyronitrile 766.06
    3,7-dimethyl-1-octanol 127.44
    1-chlorooctane 44.77
    1-chlorotetradecane 16.52
    n-nonane 3.34
    undecane 3.49
    tert-butylcyclohexane 9.8
    cyclooctane 2.77
    cyclopentanol 416.96
    tetrahydropyran 729.64
    tert-amyl methyl ether 302.31
    2,5,8-trioxanonane 522.71
    1-hexene 48.45
    2-isopropoxyethanol 618.56
    2,2,2-trifluoroethanol 404.62
    methyl butyrate 703.29

    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