2,4-D-2-ethylhexyl

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  • Identifiers

    CAS number
    1928-43-4

    Molecular formula
    C16H22Cl2O3

    SMILES
    CCCCC(CC)COC(=O)COC1=C(C=C(C=C1)Cl)Cl

    Safety labels

    Irritant
    Irritant

    Environmental Hazard
    Environmental

  • Odor profile

    Fragrance
    Fruity 38.43%
    Sweet 29.5%
    Spicy 29.2%
    Floral 27.28%
    Odorless 26.79%
    Animal 24.81%
    Balsamic 23.57%
    Dry 22.89%
    Woody 22.6%
    Musk 22.02%

     

    Flavor
    Bitter 31.47%
    Mild 29.89%
    Herbal 29.05%
    Bland 28.75%
    Odorless 27.44%
    Woody 24.21%
    Parsley 20.67%
    Ethyl benzoate 20.35%
    Fruity 20.32%
    Spicy 20.07%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    6.3

    pKa est.
    6.37 (neutral)

    Molecular weight
    333.2 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Melting point expt.

    • <-37 °C

    Boiling point

    • >300 °C (decomp)

    Flash point

    • 144.47 ˚C est.
    • 171 °C (Cleveland open cup)

    Solubility expt.

    • In water, 0.086 mg/L at 25 °C

  • Synonyms

    • 1928-43-4
    • 2,4-D 2-Ethylhexyl ester
    • 2,4-D-2-ethylhexyl
    • 2-Ethylhexyl (2,4-dichlorophenoxy)acetate
    • 2-Ethylhexyl 2,4-dichlorophenoxyacetate
    • Caswell No. 315AS
    • 2-ethylhexyl 2-(2,4-dichlorophenoxy)acetate
    • 2,4-D-2-ethylhexyl [ISO]
    • HSDB 7309
    • EINECS 217-673-3
    • 2,4-D-2-ethylhexyl ester
    • Acetic acid, (2,4-dichlorophenoxy)-, 2-ethylhexyl ester
    • EPA Pesticide Chemical Code 030063
    • Acetic acid, 2-(2,4-dichlorophenoxy)-, 2-ethylhexyl ester
    • BRN 2293059
    • CCRIS 8567
    • (2,4-Dichlorophenoxy)acetic acid 2-ethylhexyl ester
    • D4373UKV25
    • DTXSID4034235
    • 2,4-D L.V. 4 ESTER
    • 2,4-D LV 6
    • 2,4-D 2-ETHYLHEXYL ESTER [HSDB]
    • 2,4-D-2-ETHYLHEXYL, (+/-)-
    • 2,4-d, 2-ethylhexyl ester
    • UNII-D4373UKV25
    • 2,4D2ethylhexyl
    • 2,4-D-etexyl
    • DSSTox_CID_444
    • 2,4-D, 2-Ethylhexyl
    • 2,4-D-etexyl [ISO]
    • DSSTox_RID_75593
    • DSSTox_GSID_20444
    • DTXCID40444
    • SCHEMBL5933385
    • CHEMBL1489206
    • 2,4-D Isooctyl ester, 67%
    • 2,4D 2EHE
    • 2,4-D, Isooctyl ester, 67%
    • LV-69
    • Tox21_200926
    • 2Ethylhexyl 2,4dichlorophenoxyacetate
    • 2-Ethylhexyl-2,4-dichlorophenoxyacetate
    • 2Ethylhexyl (2,4dichlorophenoxy)acetate
    • USEPA/OPP Pesticide Code: 030063
    • NCGC00091102-01
    • NCGC00091102-02
    • NCGC00091102-03
    • NCGC00258480-01
    • (2-ethylhexyl)2,4-dichloro-phenoxyacetate
    • CAS-25168-26-7
    • DB-044813
    • NS00020762
    • (2,4Dichlorophenoxy)acetic acid 2ethylhexyl ester
    • Isooctyl(2-ethylhexyl) 2,4-dichlorophenoxyacetate
    • 2,4-DICHLOROPHENOXYACETIC ACID ETHYLHEXYL ESTER
    • Acetic acid, (2,4dichlorophenoxy), 2ethylhexyl ester
    • Q22329336
    • 2,4-DICHLOROPHENOXYACETIC ACID 2-ETHYLHEXYL ESTER
    • 217-673-3

  • Applications

    2,4-D-2-ethylhexyl ester is primarily used as an active ingredient in selective herbicides for broadleaf weed control. Its oil-soluble nature makes it suitable for formulations such as emulsifiable concentrates, flowables, or suspension concentrates intended for foliar spray. Real-world applications include broadleaf weed control in agricultural crops, turfgrass management (lawns and golf courses), landscape and nursery weed control, and professional urban/industrial weed-management products; it is often used in tank mixes with other herbicides to broaden efficacy. As an ester, it provides good leaf penetration and systemic activity, with use governed by local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 620.35
    methanol 489.04
    isopropanol 333.13
    water 0.05
    ethyl acetate 2264.12
    n-propanol 487.21
    acetone 2469.27
    n-butanol 413.71
    acetonitrile 867.73
    DMF 1575.4
    toluene 891.08
    isobutanol 321.6
    1,4-dioxane 1373.46
    methyl acetate 1637.6
    THF 2637.77
    2-butanone 1991.44
    n-pentanol 329.1
    sec-butanol 411.22
    n-hexane 8.63
    ethylene glycol 45.42
    NMP 1496.04
    cyclohexane 45.56
    DMSO 1740.25
    n-butyl acetate 928.63
    n-octanol 122.98
    chloroform 4909.12
    n-propyl acetate 1078.95
    acetic acid 829.76
    dichloromethane 6709.98
    cyclohexanone 2618.1
    propylene glycol 105.01
    isopropyl acetate 938.12
    DMAc 1674.75
    2-ethoxyethanol 854.44
    isopentanol 372.11
    n-heptane 12.9
    ethyl formate 766.46
    1,2-dichloroethane 3616.7
    n-hexanol 245.68
    2-methoxyethanol 1126.93
    isobutyl acetate 498.75
    tetrachloromethane 353.77
    n-pentyl acetate 618.52
    transcutol 2530.54
    n-heptanol 137.5
    ethylbenzene 283.31
    MIBK 657.28
    2-propoxyethanol 640.86
    tert-butanol 390.79
    MTBE 612.1
    2-butoxyethanol 415.14
    propionic acid 583.79
    o-xylene 392.5
    formic acid 173.76
    diethyl ether 691.94
    m-xylene 415.86
    p-xylene 384.16
    chlorobenzene 1184.61
    dimethyl carbonate 516.85
    n-octane 7.45
    formamide 533.69
    cyclopentanone 2802.19
    2-pentanone 1580.03
    anisole 712.09
    cyclopentyl methyl ether 1083.6
    gamma-butyrolactone 2644.48
    1-methoxy-2-propanol 767.52
    pyridine 2289.31
    3-pentanone 1120.08
    furfural 2111.57
    n-dodecane 7.33
    diethylene glycol 411.29
    diisopropyl ether 145.63
    tert-amyl alcohol 408.28
    acetylacetone 1920.75
    n-hexadecane 9.18
    acetophenone 861.78
    methyl propionate 1444.35
    isopentyl acetate 726.89
    trichloroethylene 7254.05
    n-nonanol 113.63
    cyclohexanol 618.65
    benzyl alcohol 617.57
    2-ethylhexanol 180.19
    isooctanol 130.23
    dipropyl ether 248.04
    1,2-dichlorobenzene 990.67
    ethyl lactate 311.93
    propylene carbonate 1275.82
    n-methylformamide 822.25
    2-pentanol 286.49
    n-pentane 8.53
    1-propoxy-2-propanol 445.5
    1-methoxy-2-propyl acetate 879.88
    2-(2-methoxypropoxy) propanol 401.29
    mesitylene 191.08
    ε-caprolactone 1816.06
    p-cymene 145.81
    epichlorohydrin 4354.31
    1,1,1-trichloroethane 2544.02
    2-aminoethanol 153.65
    morpholine-4-carbaldehyde 1568.06
    sulfolane 2168.86
    2,2,4-trimethylpentane 16.51
    2-methyltetrahydrofuran 1832.29
    n-hexyl acetate 598.78
    isooctane 10.56
    2-(2-butoxyethoxy)ethanol 593.97
    sec-butyl acetate 617.74
    tert-butyl acetate 857.62
    decalin 29.13
    glycerin 138.31
    diglyme 1433.65
    acrylic acid 488.99
    isopropyl myristate 178.78
    n-butyric acid 989.75
    acetyl acetate 1136.23
    di(2-ethylhexyl) phthalate 186.25
    ethyl propionate 825.97
    nitromethane 2564.08
    1,2-diethoxyethane 921.47
    benzonitrile 823.99
    trioctyl phosphate 119.44
    1-bromopropane 1252.88
    gamma-valerolactone 3066.58
    n-decanol 79.22
    triethyl phosphate 247.65
    4-methyl-2-pentanol 147.38
    propionitrile 639.53
    vinylene carbonate 1134.21
    1,1,2-trichlorotrifluoroethane 1807.96
    DMS 685.29
    cumene 144.5
    2-octanol 110.94
    2-hexanone 853.47
    octyl acetate 237.52
    limonene 236.03
    1,2-dimethoxyethane 1302.72
    ethyl orthosilicate 224.95
    tributyl phosphate 168.7
    diacetone alcohol 814.76
    N,N-dimethylaniline 358.49
    acrylonitrile 973.22
    aniline 851.06
    1,3-propanediol 338.55
    bromobenzene 1460.39
    dibromomethane 3345.61
    1,1,2,2-tetrachloroethane 4440.63
    2-methyl-cyclohexyl acetate 414.34
    tetrabutyl urea 219.2
    diisobutyl methanol 110.63
    2-phenylethanol 447.18
    styrene 454.91
    dioctyl adipate 324.65
    dimethyl sulfate 805.33
    ethyl butyrate 632.22
    methyl lactate 403.26
    butyl lactate 369.94
    diethyl carbonate 413.94
    propanediol butyl ether 345.15
    triethyl orthoformate 345.96
    p-tert-butyltoluene 135.31
    methyl 4-tert-butylbenzoate 467.06
    morpholine 1965.5
    tert-butylamine 178.84
    n-dodecanol 59.85
    dimethoxymethane 1304.98
    ethylene carbonate 925.69
    cyrene 477.66
    2-ethoxyethyl acetate 990.11
    2-ethylhexyl acetate 544.82
    1,2,4-trichlorobenzene 1248.26
    4-methylpyridine 2112.06
    dibutyl ether 252.45
    2,6-dimethyl-4-heptanol 110.63
    DEF 1449.1
    dimethyl isosorbide 853.41
    tetrachloroethylene 2417.38
    eugenol 440.11
    triacetin 669.89
    span 80 335.29
    1,4-butanediol 153.64
    1,1-dichloroethane 2919.95
    2-methyl-1-pentanol 317.83
    methyl formate 740.18
    2-methyl-1-butanol 386.89
    n-decane 12.51
    butyronitrile 650.56
    3,7-dimethyl-1-octanol 154.23
    1-chlorooctane 118.82
    1-chlorotetradecane 41.1
    n-nonane 10.88
    undecane 9.1
    tert-butylcyclohexane 23.35
    cyclooctane 11.63
    cyclopentanol 637.84
    tetrahydropyran 1612.67
    tert-amyl methyl ether 473.9
    2,5,8-trioxanonane 786.51
    1-hexene 105.0
    2-isopropoxyethanol 553.1
    2,2,2-trifluoroethanol 307.98
    methyl butyrate 1165.12

    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