Chlorsulfuron

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  • Identifiers

    CAS number
    64902-72-3

    Molecular formula
    C12H12ClN5O4S

    SMILES
    CC1=NC(=NC(=N1)OC)NC(=O)NS(=O)(=O)C2=CC=CC=C2Cl

    Safety labels

    Environmental Hazard
    Environmental

  • Odor profile

    Fragrance
    Odorless 69.16%
    Cooked 27.87%
    Savory 27.45%
    Meaty 24.9%
    Roasted 22.97%
    Grape 20.83%
    Bitter 18.12%
    Fruity 17.54%
    Milky 15.86%
    Sulfurous 15.43%

     

    Flavor
    Bitter 84.69%
    Odorless 40.31%
    Bland 25.73%
    Mild 20.15%
    Nitrile 19.47%
    Roasted peanuts 18.66%
    Taco 18.66%
    Bread crust 18.53%
    Sweet-like 18.31%
    Cedarleaf 18.09%

     

    Odor impact est.
    Odorless

  • Properties

    XLogP3-AA
    2.3

    pKa est.
    4.78 (weak acid)

    Molecular weight
    357.77 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Boiling point est.
    1341°C

    Melting point expt.

    • 176 °C
    • MP: 174-178 °C

    Flash point

    • 227.28 ˚C est.

    Solubility expt.

    • >53.7 [ug/mL] (The mean of the results at pH 7.4)
    • In water, 125 mg/L at 25 °C
    • Solubility (25 °C) : 4 g/L acetone; 102 g/L dichloromethane, <0.01 g/L hexane, 15 g/L methanol; 3 g/L toluene
    • Moderately soluble in methylene chloride; less soluble in acetone, acetonitril. Low solubility in hydrocarbon solvents.
    • Slight solubility in methylene chloride, acetone, methanol, toluene, hexane

  • Synonyms

    • CHLORSULFURON
    • 64902-72-3
    • Chlorosulfuron
    • Glean
    • Chlorsulfon
    • Telar
    • Trilixon
    • 2-Chlorsulfuron
    • 1-(2-chlorophenyl)sulfonyl-3-(4-methoxy-6-methyl-1,3,5-triazin-2-yl)urea
    • Glean C
    • Glean 20DF
    • DPX 4189
    • Tuligen
    • UNII-O6S620ML45
    • DTXSID7023980
    • O6S620ML45
    • 1-(2-Chlorophenylsulfonyl)-3-(4-methoxy-6-methyl-1,3,5-triazin-2-yl)urea
    • DNDI1246776
    • 2-Chloro-N-((4-methoxy-6-methyl-1,3,5-triazin-2-yl)aminocarbonyl)-benzenesulfonamide
    • 79793-04-7
    • CHLORSULFURON [MI]
    • CHLORSULFURON [ISO]
    • CHLORSULFURON [HSDB]
    • 1-((o-Chlorophenyl)sulfonyl)-3-(4-methoxy-6-methyl-s-triazin-2-yl)urea
    • CHEBI:3652
    • DTXCID503980
    • CHEMBL1229721
    • 1-(2-Chlorophenylsulphonyl)-3-(4-methoxy-6-methyl-1,3,5-triazin-2-yl)urea
    • 2-Chloro-N-(((4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino)carbonyl)benzenesulfonamide
    • Benzenesulfonamide, 2-chloro-N-(((4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino)carbonyl)-
    • 112143-77-8
    • Khardin
    • Urea, 1-((o-chlorophenyl)sulfonyl)-3-(4-methoxy-6-methyl-s-triazin-2-yl)-
    • W 4189
    • 1-(2-CHLOROPHENYLSULFONYL)-3-(4-METHOXY-6-METHYL-L,3,5-TRIAZIN-2-YL)UREA
    • 2-chloro-N-[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)carbamoyl]benzenesulfonamide
    • Benzenesulfonamide, 2-chloro-N-[[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino]carbonyl]-
    • Caswell No. 194AA
    • 2-Chloro-N-((4-methoxy-6-methyl-1,3,5-triazin-2-yl)carbamoyl)benzenesulfonamide
    • 2-chloro-N-[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)carbamoyl]benzene-1-sulfonamide
    • 2-chloro-n-[[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino]carbonyl]benzenesulfonamide
    • 2-chloro-N-{[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino]carbonyl}benzenesulfonamide
    • 1CS
    • Chlorsulfuron [ANSI:BSI:ISO]
    • HSDB 6847
    • EINECS 265-268-5
    • EPA Pesticide Chemical Code 118601
    • BRN 0577255
    • Chlorsulphuron
    • 2Chlorsulfuron
    • CCRIS 9260
    • (((2-Chlorophenyl)sulfonyl)amino)-N-(4-methoxy-6-methyl(1,3,5-triazin-2-yl))carboxamide
    • {[(2-Chlorophenyl)sulfonyl]amino}-N-(4-methoxy-6-methyl(1,3,5-triazin-2-yl))carboxamide
    • 2-chloro-N-(((4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino)carbonyl)benzensulfonamide
    • 2-chloro-N-((4-methoxy-6-methyl-1,3,5-triazin-2-yl)carbamoyl)benzene-1-sulfonamide
    • 2-Chloro-N-[[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino]carbonyl]benzensulfonamide
    • 2-CHLORO-N-(((4-METHOXY-6-METHYL-1,3,5-TRIAZIN-2-YL)AMINO]CARBONYL)BENZENESULFONAMIDE
    • Glean 20FF
    • ChemDiv1_004813
    • SCHEMBL54874
    • 5-26-09-00405 (Beilstein Handbook Reference)
    • MLS001066361
    • SCHEMBL11325386
    • HMS600K17
    • GLXC-20524
    • HMS2231M23
    • HMS3372O17
    • HMS3741I09
    • MSK22301
    • EINECS 279-271-4
    • Tox21_200255
    • BDBM50424589
    • CCG-17066
    • MFCD00128059
    • AKOS015895548
    • FC37686
    • KS-5119
    • 2-Chloro-N-(((4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino)carbonyl)benzenesulphonamide
    • USEPA/OPP Pesticide Code: 118601
    • NCGC00164267-01
    • NCGC00164267-02
    • NCGC00164267-03
    • NCGC00164267-04
    • NCGC00257809-01
    • AC-18016
    • SMR000471866
    • CAS-64902-72-3
    • DB-054747
    • HY-119737
    • CS-0077902
    • NS00000107
    • C05071
    • H10430
    • Chlorosulfuron, PESTANAL(R), analytical standard
    • Q424796
    • SR-01000441519
    • SR-01000441519-1
    • 1((oChlorophenyl)sulfonyl)3(4methoxy6methylstriazin2yl)urea
    • 1(2Chlorophenylsulfonyl)3(4methoxy6methyl1,3,5triazin2yl)urea
    • 1(2Chlorophenylsulphonyl)3(4methoxy6methyl1,3,5triazin2yl)urea
    • 2ChloroN((4methoxy6methyl1,3,5triazin2yl)aminocarbonyl)benzenesulfonamide
    • Urea,1-((o-chlorophenyl)sulfonyl)-3-(4-methoxy-6-methyl-s-triazin-2-yl)-
    • 1-(2-chlorobenzenesulfonyl)-3-(4-methoxy-6-methyl-1,3,5-triazin-2-yl)urea
    • 2-[(([(2-Chlorophenyl)sulfonyl]amino)carbonyl)amino]-4-methoxy-6-methyl-1,3,5-triazine
    • 2-Chloro-N-(((4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino)carbony- l)benzenesulphonamide
    • 2-Chloro-N-(((4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino)carbonyl) benzenesulfonamide
    • 2-chloro-N-[(4-methoxy-6-methyl-1,3,5-triazine-2-yl)aminocarbonyl]benzenesulfonamide
    • Benzenesulfonamide, 2chloroN(((4methoxy6methyl1,3,5triazin2yl)amino)carbonyl)
    • Ammonium 2-chloro-N-((4-methoxy-6-methyl-1,3,5-triazin-2-yl)carbamoyl)benzenesulphonamidate

  • Applications

    Chlorsulfuron (CAS 64902-72-3) is a selective herbicide in the sulfonylurea class used in agriculture to control many broadleaf weeds in cereal crops and forage crops. It operates as an ALS (acetolactate synthase) inhibitor, disrupting branched-chain amino acid synthesis and thereby inhibiting weed growth. It is typically applied as a foliar spray, often within integrated weed-management programs and sometimes used in tank mixtures with other herbicides, subject to local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 1.83
    methanol 3.07
    isopropanol 0.6
    water 0.15
    ethyl acetate 3.63
    n-propanol 1.5
    acetone 5.21
    n-butanol 0.99
    acetonitrile 2.85
    DMF 48.39
    toluene 0.25
    isobutanol 0.72
    1,4-dioxane 2.41
    methyl acetate 4.68
    THF 10.96
    2-butanone 7.5
    n-pentanol 0.62
    sec-butanol 0.83
    n-hexane 0.01
    ethylene glycol 3.47
    NMP 126.91
    cyclohexane 0.01
    DMSO 68.22
    n-butyl acetate 2.45
    n-octanol 0.17
    chloroform 1.29
    n-propyl acetate 2.74
    acetic acid 7.76
    dichloromethane 2.02
    cyclohexanone 7.18
    propylene glycol 5.2
    isopropyl acetate 1.5
    DMAc 70.81
    2-ethoxyethanol 8.1
    isopentanol 0.61
    n-heptane 0.02
    ethyl formate 7.03
    1,2-dichloroethane 1.4
    n-hexanol 0.32
    2-methoxyethanol 24.3
    isobutyl acetate 0.99
    tetrachloromethane 0.09
    n-pentyl acetate 1.14
    transcutol 7.98
    n-heptanol 0.26
    ethylbenzene 0.14
    MIBK 1.42
    2-propoxyethanol 8.88
    tert-butanol 0.43
    MTBE 0.27
    2-butoxyethanol 3.17
    propionic acid 5.74
    o-xylene 0.18
    formic acid 14.18
    diethyl ether 0.53
    m-xylene 0.17
    p-xylene 0.22
    chlorobenzene 0.57
    dimethyl carbonate 5.91
    n-octane 0.01
    formamide 23.23
    cyclopentanone 19.66
    2-pentanone 3.9
    anisole 1.06
    cyclopentyl methyl ether 1.33
    gamma-butyrolactone 35.26
    1-methoxy-2-propanol 12.63
    pyridine 5.18
    3-pentanone 2.98
    furfural 40.26
    n-dodecane 0.01
    diethylene glycol 14.1
    diisopropyl ether 0.08
    tert-amyl alcohol 0.57
    acetylacetone 8.7
    n-hexadecane 0.01
    acetophenone 3.12
    methyl propionate 6.31
    isopentyl acetate 1.67
    trichloroethylene 4.31
    n-nonanol 0.18
    cyclohexanol 0.54
    benzyl alcohol 1.91
    2-ethylhexanol 0.27
    isooctanol 0.21
    dipropyl ether 0.6
    1,2-dichlorobenzene 0.64
    ethyl lactate 5.93
    propylene carbonate 15.72
    n-methylformamide 21.7
    2-pentanol 0.38
    n-pentane 0.01
    1-propoxy-2-propanol 5.01
    1-methoxy-2-propyl acetate 6.72
    2-(2-methoxypropoxy) propanol 5.3
    mesitylene 0.09
    ε-caprolactone 10.17
    p-cymene 0.17
    epichlorohydrin 19.79
    1,1,1-trichloroethane 0.54
    2-aminoethanol 4.38
    morpholine-4-carbaldehyde 45.64
    sulfolane 74.64
    2,2,4-trimethylpentane 0.01
    2-methyltetrahydrofuran 2.96
    n-hexyl acetate 0.87
    isooctane 0.0
    2-(2-butoxyethoxy)ethanol 4.7
    sec-butyl acetate 1.19
    tert-butyl acetate 1.32
    decalin 0.01
    glycerin 16.54
    diglyme 9.56
    acrylic acid 9.41
    isopropyl myristate 0.4
    n-butyric acid 5.05
    acetyl acetate 2.76
    di(2-ethylhexyl) phthalate 1.36
    ethyl propionate 3.06
    nitromethane 28.86
    1,2-diethoxyethane 1.35
    benzonitrile 2.29
    trioctyl phosphate 0.7
    1-bromopropane 0.43
    gamma-valerolactone 53.71
    n-decanol 0.15
    triethyl phosphate 2.18
    4-methyl-2-pentanol 0.19
    propionitrile 2.24
    vinylene carbonate 14.28
    1,1,2-trichlorotrifluoroethane 24.93
    DMS 2.89
    cumene 0.1
    2-octanol 0.14
    2-hexanone 2.57
    octyl acetate 0.64
    limonene 0.2
    1,2-dimethoxyethane 10.29
    ethyl orthosilicate 1.35
    tributyl phosphate 1.07
    diacetone alcohol 4.53
    N,N-dimethylaniline 0.82
    acrylonitrile 5.29
    aniline 1.17
    1,3-propanediol 5.33
    bromobenzene 0.4
    dibromomethane 0.85
    1,1,2,2-tetrachloroethane 2.79
    2-methyl-cyclohexyl acetate 1.8
    tetrabutyl urea 1.92
    diisobutyl methanol 0.17
    2-phenylethanol 1.47
    styrene 0.18
    dioctyl adipate 1.51
    dimethyl sulfate 20.91
    ethyl butyrate 3.14
    methyl lactate 15.79
    butyl lactate 3.13
    diethyl carbonate 2.49
    propanediol butyl ether 3.24
    triethyl orthoformate 2.06
    p-tert-butyltoluene 0.14
    methyl 4-tert-butylbenzoate 3.4
    morpholine 5.3
    tert-butylamine 0.11
    n-dodecanol 0.12
    dimethoxymethane 11.7
    ethylene carbonate 8.0
    cyrene 18.33
    2-ethoxyethyl acetate 3.25
    2-ethylhexyl acetate 1.28
    1,2,4-trichlorobenzene 1.16
    4-methylpyridine 3.87
    dibutyl ether 0.24
    2,6-dimethyl-4-heptanol 0.17
    DEF 8.75
    dimethyl isosorbide 14.58
    tetrachloroethylene 1.15
    eugenol 4.8
    triacetin 3.18
    span 80 2.99
    1,4-butanediol 1.79
    1,1-dichloroethane 0.64
    2-methyl-1-pentanol 0.55
    methyl formate 16.5
    2-methyl-1-butanol 0.81
    n-decane 0.01
    butyronitrile 1.88
    3,7-dimethyl-1-octanol 0.17
    1-chlorooctane 0.06
    1-chlorotetradecane 0.04
    n-nonane 0.01
    undecane 0.01
    tert-butylcyclohexane 0.01
    cyclooctane 0.0
    cyclopentanol 1.48
    tetrahydropyran 1.05
    tert-amyl methyl ether 0.5
    2,5,8-trioxanonane 8.72
    1-hexene 0.08
    2-isopropoxyethanol 3.11
    2,2,2-trifluoroethanol 5.58
    methyl butyrate 4.93

    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