Acetochlor

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  • Identifiers

    CAS number
    34256-82-1

    Molecular formula
    C14H20ClNO2

    SMILES
    CCC1=CC=CC(=C1N(COCC)C(=O)CCl)C

    Safety labels

    Irritant
    Irritant

    Health Hazard
    Health

    Environmental Hazard
    Environmental

  • Odor profile

    Fragrance
    Grape 30.33%
    Floral 29.53%
    Fruity 29.45%
    Sweet 28.65%
    Fresh 27.02%
    Grapefruit 26.71%
    Odorless 26.27%
    Citrus 25.07%
    Cooling 24.46%
    Musk 24.01%

     

    Flavor
    Bitter 36.65%
    Odorless 30.17%
    Bland 25.05%
    Mild 24.02%
    Fruity 20.99%
    Roasted 20.9%
    Sweet-like 19.58%
    Orange flower 19.55%
    Parsley 19.37%
    Heather 19.31%

     

    Odor impact est.
    Medium

  • Properties

    XLogP3-AA
    3.2

    pKa est.
    6.41 (neutral)

    Molecular weight
    269.77 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Melting point expt.

    • 10.6 °C

    Boiling point

    • BP: 172 °C at 5 mm Hg
    • BP: 134 °C at 0.4 torr

    Flash point

    • 160.0 ˚C est.
    • >93 °C (tag closed cup)

    Solubility expt.

    • In water, 233 mg/L at 25 °C
    • Soluble in 1,2-dichloroethane, p-xylene, n-heptane
    • Soluble in alcohol, acetone, toluene, carbon tetrachloride
    • Soluble in diethyl ether, benzene, chloroform, ethyl acetate

  • Synonyms

    • acetochlor
    • 34256-82-1
    • 2-Chloro-N-(ethoxymethyl)-N-(2-ethyl-6-methylphenyl)acetamide
    • Azetochlor
    • Acetochlore
    • Harness
    • Acetamide, 2-chloro-N-(ethoxymethyl)-N-(2-ethyl-6-methylphenyl)-
    • Acenit
    • Erunit
    • Nevirex
    • Caswell No. 003B
    • DTXSID8023848
    • MON 097
    • MG 02
    • 2-Chloro-2'-methyl-6-ethyl-N-ethoxymethylacetanilide
    • 2-Chloro-N-(ethoxymethyl)-6'-ethyl-o-acetotoluidide
    • 8L08WMO94K
    • 2-Chloro-N-(ethoxymethyl)-6'-ethylacet-o-toluidide
    • CHEBI:2394
    • DTXCID303848
    • RefChem:108989
    • 251-899-3
    • Acetochlore [ISO-French]
    • Acetochlor [ISO]
    • SMR000777859
    • Acetochlor [ANSI:BSI:ISO]
    • CAS-34256-82-1
    • CCRIS 7709
    • HSDB 6550
    • EINECS 251-899-3
    • EPA Pesticide Chemical Code 121601
    • BRN 2859702
    • UNII-8L08WMO94K
    • Acetochlo
    • o-Acetotoluidide, 2-chloro-N-(ethoxymethyl)-6'-ethyl-
    • Spectrum_001979
    • ACETOCHLOR [MI]
    • SpecPlus_000626
    • Spectrum2_001915
    • Spectrum3_000873
    • Spectrum4_000713
    • Spectrum5_002071
    • ACETOCHLOR [HSDB]
    • Acetochlor standard solution
    • 2-chloro-n-ethoxymethyl-6'-ethylacet-o-toluidide
    • SCHEMBL21390
    • BSPBio_002545
    • KBioGR_001265
    • KBioSS_002545
    • SPECTRUM330089
    • MLS001055474
    • MLS002695926
    • DivK1c_006722
    • SPBio_001910
    • CHEMBL1517425
    • SCHEMBL29366709
    • KBio1_001666
    • KBio2_002536
    • KBio2_005104
    • KBio2_007672
    • KBio3_002045
    • HMS3029L16
    • JBA25682
    • MSK22393
    • Tox21_202445
    • Tox21_300889
    • CCG-39458
    • MFCD00143534
    • AKOS015889911
    • GS-6265
    • Acetochlor 100 microg/mL in Cyclohexane
    • NCGC00090754-01
    • NCGC00090754-02
    • NCGC00090754-03
    • NCGC00090754-04
    • NCGC00090754-05
    • NCGC00090754-06
    • NCGC00090754-07
    • NCGC00090754-08
    • NCGC00090754-09
    • NCGC00254793-01
    • NCGC00259994-01
    • 123113-74-6
    • Acetochlor 100 microg/mL in Acetonitrile
    • DB-020949
    • NS00000067
    • Acetochlor, PESTANAL(R), analytical standard
    • EN300-140829
    • H10515
    • 256A821
    • A822138
    • A935755
    • Q419732
    • SR-01000846094
    • SR-01000846094-2
    • BRD-K16652251-001-02-7
    • 2-chloro-2'-ethyl-6'-methyl-N-(ethoxymethyl)acetanilide
    • Z1705874565
    • 2-chloro-2'-ethyl-6'-methyl-N-(ethoxymethyl) acetanilide
    • N-(ethoxymethyl)-2-chloro-N-(2-ethyl,6-methylphenyl)acetamide
    • 2-chloro-n-(ethoxymethyl)-n-(2-ethyl-6-methyl-phenyl)acetamide
    • 2-Chloro-N-(ethoxymethyl)-N-(2-ethyl-6-methylphenyl)acetamide #
    • 2-Chloro-N-ethoxymethyl-N-(2'-ethyl-6'-methylphenyl) acetamide
    • 2-Chloro-N-((ethoxy-d5)methyl-d2)-N-(2-ethyl-6-(methyl-d3)phenyl-5-d)acetamide
    • 34256-82-1

  • Applications

    Acetochlor (CAS 34256-82-1) is a chloroacetanilide herbicide used in agriculture as the active ingredient in crop protection products to control annual grasses and certain broadleaf weeds in corn (maize) and other major field crops, typically applied as a pre-emergence treatment. It is formulated into herbicide products and is commonly paired with adjuvants and surfactants to improve spray coverage and weed control effectiveness. In practice, acetochlor is used in formulation development and weed-management programs to optimize control strategies, especially for pre-emergence regimes. It is also evaluated in agronomic research for weed-control performance and crop safety, contributing to integrated weed management. Use is subject to local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 630.74
    methanol 832.36
    isopropanol 419.84
    water 2.85
    ethyl acetate 532.53
    n-propanol 520.21
    acetone 864.59
    n-butanol 494.64
    acetonitrile 502.27
    DMF 1311.8
    toluene 324.45
    isobutanol 397.81
    1,4-dioxane 846.41
    methyl acetate 513.99
    THF 869.08
    2-butanone 596.58
    n-pentanol 303.49
    sec-butanol 345.76
    n-hexane 10.12
    ethylene glycol 205.89
    NMP 1075.58
    cyclohexane 50.46
    DMSO 859.75
    n-butyl acetate 287.96
    n-octanol 69.3
    chloroform 2713.26
    n-propyl acetate 265.98
    acetic acid 876.71
    dichloromethane 2627.53
    cyclohexanone 1000.31
    propylene glycol 174.48
    isopropyl acetate 258.36
    DMAc 943.42
    2-ethoxyethanol 414.03
    isopentanol 345.5
    n-heptane 7.12
    ethyl formate 499.94
    1,2-dichloroethane 1679.18
    n-hexanol 223.76
    2-methoxyethanol 732.32
    isobutyl acetate 177.15
    tetrachloromethane 281.84
    n-pentyl acetate 181.4
    transcutol 452.69
    n-heptanol 100.12
    ethylbenzene 123.03
    MIBK 210.11
    2-propoxyethanol 368.79
    tert-butanol 370.68
    MTBE 278.25
    2-butoxyethanol 207.36
    propionic acid 436.68
    o-xylene 164.16
    formic acid 383.24
    diethyl ether 322.98
    m-xylene 163.07
    p-xylene 170.65
    chlorobenzene 600.7
    dimethyl carbonate 222.46
    n-octane 4.26
    formamide 502.77
    cyclopentanone 997.35
    2-pentanone 432.25
    anisole 260.68
    cyclopentyl methyl ether 376.26
    gamma-butyrolactone 981.39
    1-methoxy-2-propanol 400.95
    pyridine 1050.26
    3-pentanone 343.64
    furfural 913.92
    n-dodecane 4.67
    diethylene glycol 363.92
    diisopropyl ether 57.73
    tert-amyl alcohol 271.72
    acetylacetone 454.9
    n-hexadecane 5.45
    acetophenone 292.71
    methyl propionate 396.49
    isopentyl acetate 245.76
    trichloroethylene 2932.7
    n-nonanol 63.65
    cyclohexanol 474.36
    benzyl alcohol 337.08
    2-ethylhexanol 118.03
    isooctanol 84.75
    dipropyl ether 99.05
    1,2-dichlorobenzene 470.01
    ethyl lactate 138.43
    propylene carbonate 575.84
    n-methylformamide 633.8
    2-pentanol 216.24
    n-pentane 12.9
    1-propoxy-2-propanol 198.32
    1-methoxy-2-propyl acetate 231.3
    2-(2-methoxypropoxy) propanol 138.39
    mesitylene 86.44
    ε-caprolactone 655.82
    p-cymene 70.64
    epichlorohydrin 1281.65
    1,1,1-trichloroethane 1080.97
    2-aminoethanol 323.02
    morpholine-4-carbaldehyde 777.79
    sulfolane 979.69
    2,2,4-trimethylpentane 13.59
    2-methyltetrahydrofuran 650.44
    n-hexyl acetate 185.27
    isooctane 7.82
    2-(2-butoxyethoxy)ethanol 184.21
    sec-butyl acetate 166.7
    tert-butyl acetate 220.22
    decalin 23.26
    glycerin 251.99
    diglyme 415.59
    acrylic acid 444.2
    isopropyl myristate 63.71
    n-butyric acid 636.64
    acetyl acetate 358.79
    di(2-ethylhexyl) phthalate 99.99
    ethyl propionate 209.24
    nitromethane 1047.01
    1,2-diethoxyethane 201.56
    benzonitrile 410.23
    trioctyl phosphate 67.33
    1-bromopropane 586.08
    gamma-valerolactone 1074.52
    n-decanol 47.0
    triethyl phosphate 110.87
    4-methyl-2-pentanol 107.82
    propionitrile 398.45
    vinylene carbonate 613.29
    1,1,2-trichlorotrifluoroethane 873.03
    DMS 206.73
    cumene 78.41
    2-octanol 61.81
    2-hexanone 247.8
    octyl acetate 93.0
    limonene 107.27
    1,2-dimethoxyethane 572.7
    ethyl orthosilicate 103.79
    tributyl phosphate 81.31
    diacetone alcohol 244.77
    N,N-dimethylaniline 172.6
    acrylonitrile 535.56
    aniline 441.08
    1,3-propanediol 453.46
    bromobenzene 633.03
    dibromomethane 1519.99
    1,1,2,2-tetrachloroethane 1963.96
    2-methyl-cyclohexyl acetate 166.79
    tetrabutyl urea 107.44
    diisobutyl methanol 62.13
    2-phenylethanol 262.06
    styrene 184.2
    dioctyl adipate 115.09
    dimethyl sulfate 338.37
    ethyl butyrate 186.77
    methyl lactate 190.12
    butyl lactate 138.98
    diethyl carbonate 147.84
    propanediol butyl ether 147.74
    triethyl orthoformate 132.56
    p-tert-butyltoluene 63.18
    methyl 4-tert-butylbenzoate 182.47
    morpholine 1018.47
    tert-butylamine 173.35
    n-dodecanol 36.62
    dimethoxymethane 518.79
    ethylene carbonate 519.11
    cyrene 244.74
    2-ethoxyethyl acetate 241.44
    2-ethylhexyl acetate 196.45
    1,2,4-trichlorobenzene 530.24
    4-methylpyridine 893.35
    dibutyl ether 75.67
    2,6-dimethyl-4-heptanol 62.13
    DEF 568.35
    dimethyl isosorbide 268.06
    tetrachloroethylene 1336.02
    eugenol 199.14
    triacetin 168.87
    span 80 136.47
    1,4-butanediol 203.49
    1,1-dichloroethane 1335.28
    2-methyl-1-pentanol 259.89
    methyl formate 552.59
    2-methyl-1-butanol 375.04
    n-decane 6.83
    butyronitrile 438.56
    3,7-dimethyl-1-octanol 69.06
    1-chlorooctane 53.97
    1-chlorotetradecane 21.95
    n-nonane 5.91
    undecane 5.44
    tert-butylcyclohexane 17.86
    cyclooctane 9.5
    cyclopentanol 463.83
    tetrahydropyran 809.5
    tert-amyl methyl ether 191.57
    2,5,8-trioxanonane 246.05
    1-hexene 73.72
    2-isopropoxyethanol 249.81
    2,2,2-trifluoroethanol 354.79
    methyl butyrate 332.02

    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