Monuron

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  • Identifiers

    CAS number
    150-68-5

    Molecular formula
    C9H11ClN2O

    SMILES
    CN(C)C(=O)NC1=CC=C(C=C1)Cl

    Safety labels

    Irritant
    Irritant

    Health Hazard
    Health

    Environmental Hazard
    Environmental

  • Odor profile

    Fragrance
    Odorless 40.15%
    Grape 36.93%
    Savory 30.16%
    Cheesy 29.62%
    Citrus 29.24%
    Meaty 28.62%
    Cooling 27.14%
    Grapefruit 26.94%
    Animal 26.44%
    Ripe 23.81%

     

    Flavor
    Odorless 38.08%
    Fruity 35.23%
    Mild 30.78%
    Bitter 29.44%
    Orange flower 20.41%
    Roasted 19.62%
    Yeast 19.58%
    Nitrile 19.33%
    Taco 19.26%
    Bland 19.2%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    1.9

    pKa est.
    6.95 (neutral)

    Molecular weight
    198.65 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Melting point expt.

    • 338.9 to 340.7 °F (NTP, 1992)
    • 170.5-171.5 °C

    Boiling point

    • 365 to 392 °F at 760 mmHg (decomposes) (NTP, 1992)

    Flash point

    • 148.42 ˚C est.

    Solubility expt.

    • less than 1 mg/mL at 70.7 °F (NTP, 1992)
    • Monuron-TCA is a crystalline solid; mp 78-81 °C. Solubility (room temperature): 918 mg/l water; 400 g/kg 1,2-dichloroethane; 177 g/kg methanol; 91 g/kg xylene. It is acidic in reaction and incompatible with alkaline materials. /Monuron Trichloroacetate/
    • VERY SLIGHTLY SOL IN NUMBER 3 DIESEL OIL; MODERATELY SOL IN METHANOL, ETHANOL, PRACTICALLY INSOL IN HYDROCARBON SOLVENTS
    • SLIGHTLY SOL IN OIL & POLAR SOLVENTS
    • Solubility (ppm): water 230 (@ 25 °C), acetone 52,000 (@ 27 °C), benzene 2900 (@ 27 °C)
    • Sol in benzene: 3 g/kg at 27 °C

  • Synonyms

    • MONURON
    • 150-68-5
    • 3-(4-Chlorophenyl)-1,1-dimethylurea
    • Chlorfenidim
    • Lirobetarex
    • Monuruon
    • Monurex
    • Monurox
    • Monuuron
    • Telvar
    • Herbicides, monuron
    • 3-(p-Chlorophenyl)-1,1-dimethylurea
    • 1-(4-Chlorophenyl)-3,3-dimethylurea
    • Usaf p-8
    • Usaf xr-41
    • 1,1-Dimethyl-3-(p-chlorophenyl)urea
    • Karmex monuron herbicide
    • N'-(4-Chlorophenyl)-N,N-dimethylurea
    • Telvar Monuron Weedkiller
    • Urea, N'-(4-chlorophenyl)-N,N-dimethyl-
    • Karmex W. monuron herbicide
    • N,N-Dimethyl-N'-(4-chlorophenyl)urea
    • Caswell No. 583
    • Telvar W. monuron weedkiller
    • Urea, 3-(p-chlorophenyl)-1,1-dimethyl-
    • N-(4-Chlorophenyl)-N',N'-dimethylurea
    • NCI-C02846
    • Monuron [ANSI:BSI:ISO]
    • CCRIS 898
    • N-Dimethyl-N'-(4-chlorophenyl)urea
    • 1-(p-Chlorophenyl)-3,3-dimethylurea
    • N-(p-Chlorophenyl)-N',N'-dimethylurea
    • HSDB 1036
    • 1,1-Dimethyl-3-(p-chlorophenyl)thiourea
    • Monuron Herbicide
    • UNII-I99GAK5X1D
    • NSC 8949
    • EINECS 205-766-1
    • I99GAK5X1D
    • EPA Pesticide Chemical Code 035501
    • BRN 2097922
    • 1-(4-Chloro phenyl)-3,3-dimethyluree
    • 3-(4-Chloor-fenyl)-1,1-dimethylureum
    • CMU
    • DTXSID0020311
    • CHEBI:38214
    • Urea, 3-(4-Chlorophenyl)-1,1-dimethyl-
    • 3-(4-Chlor-phenyl)-1,1-dimethyl-harnstoff
    • MONURON [HSDB]
    • MONURON [IARC]
    • MONURON [ISO]
    • NSC-8949
    • MONURON [MI]
    • MFCD00018556
    • 1,1-Dimethyl-3-(4-chlorophenyl)urea
    • 3-(4-cloro-fenil)-1,1-dimetil-urea
    • DTXCID80311
    • Monuron 10 microg/mL in Acetonitrile
    • Monuron 100 microg/mL in Acetonitrile
    • Chlorea
    • Monuroun
    • Rosuran
    • MONURON (IARC)
    • CMU Weedkiller
    • Karmex W
    • CNV Weed Killer
    • Monuron (ANSI:BSI:ISO)
    • Karmex W. monuron herbicide; Monuron; NSC 8949
    • monouron
    • CAS-150-68-5
    • 1-para-Chlorophenyl-3,3-dimethylurea
    • 3-para-Chlorophenyl-1,1-dimethylurea
    • N-para-Chlorophenyl-N',N'-dimethylurea
    • 1,1-Dimethyl-3-(para-chlorophenyl)urea
    • 1-(4-Chloro phenyl)-3,3-dimethyluree [French]
    • 3-(4-Chloor-fenyl)-1,1-dimethylureum [Dutch]
    • 3-(4-Cloro-fenil)-1,1-dimetil-urea [Italian]
    • 3-(4-Chlor-phenyl)-1,1-dimethyl-harnstoff [German]
    • SCHEMBL106717
    • 3(4Clorofenil)1,1dimetilurea
    • NDimethylN'(4chlorophenyl)urea
    • CHEMBL467623
    • 1paraChlorophenyl3,3dimethylurea
    • 3paraChlorophenyl1,1dimethylurea
    • WLN: GR DMVN1 & 1
    • 1(pChlorophenyl)3,3dimethylurea
    • 1,1Dimethyl3(pchlorophenyl)urea
    • 3(pChlorophenyl)1,1dimethylurea
    • 1(4Chlorophenyl)3,3dimethylurea
    • 3(4Chloorfenyl)1,1dimethylureum
    • 3(4Chlorophenyl)1,1dimethylurea
    • KARMEX W MONURON HERBICIDE
    • N'(4Chlorophenyl)N,Ndimethylurea
    • N,NDimethylN'(4chlorophenyl)urea
    • NSC8949
    • 1(4Chloro phenyl)3,3dimethyluree
    • HMS1784G02
    • N(pChlorophenyl)N',N'dimethylurea
    • NparaChlorophenylN',N'dimethylurea
    • TELVAR W MONURON WEEDKILLER
    • 1,1Dimethyl3(parachlorophenyl)urea
    • HY-B1875
    • Urea, 3(pchlorophenyl)1,1dimethyl
    • 1,1Dimethyl3(pchlorophenyl)thiourea
    • Tox21_201439
    • Tox21_300367
    • Urea, 3(4Chlorophenyl)1,1dimethyl
    • Urea, N'(4chlorophenyl)N,Ndimethyl
    • 3(4Chlorphenyl)1,1dimethylharnstoff
    • AKOS001033892
    • FM41080
    • NCGC00091194-01
    • NCGC00091194-02
    • NCGC00091194-03
    • NCGC00091194-04
    • NCGC00254546-01
    • NCGC00258990-01
    • BS-44092
    • N-(4-chlorophenyl)-N',N'-dimethyl-urea
    • Urea, 3-(4-Chlorophenyl)-1,1-dimethyl
    • DB-043061
    • Monuron, PESTANAL(R), analytical standard
    • Urea, N'(4chlorophenyl)N,Ndimethyl (9CI)
    • CS-0013941
    • NS00007862
    • 3-(4-Chlorophenyl)-1,1-dimethylurea, 99%
    • C19087
    • G76481

  • Applications

    Monuron is a phenylurea herbicide used in agriculture to achieve selective weed control. It is typically applied as a soil-active, pre-emergent treatment to suppress annual grasses and some broadleaf weeds, providing residual control during crop production. It is formulated as an active ingredient in pesticide products and can be included in tank mixes or other formulations for crop protection programs and integrated weed management. Additionally, it may be evaluated for non-crop weed control in certain settings, subject to local regulations and formulation limitations.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 186.4
    methanol 210.67
    isopropanol 158.48
    water 4.71
    ethyl acetate 92.58
    n-propanol 149.41
    acetone 214.59
    n-butanol 114.28
    acetonitrile 116.31
    DMF 634.43
    toluene 54.3
    isobutanol 104.8
    1,4-dioxane 233.63
    methyl acetate 148.1
    THF 268.97
    2-butanone 216.83
    n-pentanol 104.14
    sec-butanol 152.18
    n-hexane 1.58
    ethylene glycol 50.6
    NMP 213.45
    cyclohexane 2.47
    DMSO 261.44
    n-butyl acetate 61.02
    n-octanol 47.35
    chloroform 333.94
    n-propyl acetate 76.54
    acetic acid 170.94
    dichloromethane 267.62
    cyclohexanone 171.21
    propylene glycol 97.35
    isopropyl acetate 49.1
    DMAc 676.73
    2-ethoxyethanol 179.5
    isopentanol 93.24
    n-heptane 2.21
    ethyl formate 132.52
    1,2-dichloroethane 111.5
    n-hexanol 75.37
    2-methoxyethanol 234.29
    isobutyl acetate 51.17
    tetrachloromethane 22.94
    n-pentyl acetate 44.99
    transcutol 163.13
    n-heptanol 52.89
    ethylbenzene 38.08
    MIBK 59.24
    2-propoxyethanol 129.51
    tert-butanol 169.55
    MTBE 86.75
    2-butoxyethanol 99.18
    propionic acid 104.07
    o-xylene 43.95
    formic acid 127.42
    diethyl ether 50.24
    m-xylene 36.51
    p-xylene 62.93
    chlorobenzene 70.08
    dimethyl carbonate 55.3
    n-octane 2.0
    formamide 184.28
    cyclopentanone 213.85
    2-pentanone 103.26
    anisole 104.23
    cyclopentyl methyl ether 68.52
    gamma-butyrolactone 199.96
    1-methoxy-2-propanol 172.59
    pyridine 224.98
    3-pentanone 78.55
    furfural 258.08
    n-dodecane 2.54
    diethylene glycol 114.17
    diisopropyl ether 12.32
    tert-amyl alcohol 144.02
    acetylacetone 101.07
    n-hexadecane 2.78
    acetophenone 114.55
    methyl propionate 89.23
    isopentyl acetate 58.24
    trichloroethylene 309.75
    n-nonanol 42.99
    cyclohexanol 79.84
    benzyl alcohol 127.14
    2-ethylhexanol 42.41
    isooctanol 44.17
    dipropyl ether 25.81
    1,2-dichlorobenzene 65.15
    ethyl lactate 56.34
    propylene carbonate 127.22
    n-methylformamide 217.3
    2-pentanol 68.96
    n-pentane 1.53
    1-propoxy-2-propanol 87.87
    1-methoxy-2-propyl acetate 70.12
    2-(2-methoxypropoxy) propanol 80.02
    mesitylene 18.28
    ε-caprolactone 135.05
    p-cymene 20.18
    epichlorohydrin 228.74
    1,1,1-trichloroethane 100.9
    2-aminoethanol 110.21
    morpholine-4-carbaldehyde 274.96
    sulfolane 177.56
    2,2,4-trimethylpentane 2.94
    2-methyltetrahydrofuran 156.54
    n-hexyl acetate 59.06
    isooctane 1.87
    2-(2-butoxyethoxy)ethanol 98.29
    sec-butyl acetate 47.29
    tert-butyl acetate 52.7
    decalin 3.52
    glycerin 113.73
    diglyme 177.59
    acrylic acid 100.2
    isopropyl myristate 24.82
    n-butyric acid 113.87
    acetyl acetate 54.95
    di(2-ethylhexyl) phthalate 36.19
    ethyl propionate 57.17
    nitromethane 261.35
    1,2-diethoxyethane 65.79
    benzonitrile 109.92
    trioctyl phosphate 24.49
    1-bromopropane 54.45
    gamma-valerolactone 274.72
    n-decanol 33.44
    triethyl phosphate 33.5
    4-methyl-2-pentanol 41.65
    propionitrile 97.44
    vinylene carbonate 134.25
    1,1,2-trichlorotrifluoroethane 216.41
    DMS 51.31
    cumene 27.07
    2-octanol 39.39
    2-hexanone 95.34
    octyl acetate 36.55
    limonene 24.73
    1,2-dimethoxyethane 264.77
    ethyl orthosilicate 31.39
    tributyl phosphate 27.08
    diacetone alcohol 99.11
    N,N-dimethylaniline 85.7
    acrylonitrile 139.11
    aniline 105.03
    1,3-propanediol 127.13
    bromobenzene 58.06
    dibromomethane 133.31
    1,1,2,2-tetrachloroethane 238.52
    2-methyl-cyclohexyl acetate 50.63
    tetrabutyl urea 42.2
    diisobutyl methanol 22.88
    2-phenylethanol 89.62
    styrene 47.33
    dioctyl adipate 40.93
    dimethyl sulfate 91.32
    ethyl butyrate 48.83
    methyl lactate 69.53
    butyl lactate 52.67
    diethyl carbonate 39.78
    propanediol butyl ether 95.93
    triethyl orthoformate 38.34
    p-tert-butyltoluene 19.9
    methyl 4-tert-butylbenzoate 74.46
    morpholine 262.34
    tert-butylamine 74.33
    n-dodecanol 25.9
    dimethoxymethane 182.07
    ethylene carbonate 91.92
    cyrene 110.26
    2-ethoxyethyl acetate 64.99
    2-ethylhexyl acetate 44.29
    1,2,4-trichlorobenzene 83.63
    4-methylpyridine 219.56
    dibutyl ether 29.88
    2,6-dimethyl-4-heptanol 22.88
    DEF 144.46
    dimethyl isosorbide 116.49
    tetrachloroethylene 130.21
    eugenol 93.57
    triacetin 63.09
    span 80 70.51
    1,4-butanediol 79.74
    1,1-dichloroethane 140.57
    2-methyl-1-pentanol 91.17
    methyl formate 180.8
    2-methyl-1-butanol 94.55
    n-decane 3.66
    butyronitrile 99.44
    3,7-dimethyl-1-octanol 42.16
    1-chlorooctane 19.11
    1-chlorotetradecane 8.61
    n-nonane 3.05
    undecane 2.95
    tert-butylcyclohexane 4.09
    cyclooctane 1.01
    cyclopentanol 96.18
    tetrahydropyran 145.71
    tert-amyl methyl ether 69.08
    2,5,8-trioxanonane 125.81
    1-hexene 15.42
    2-isopropoxyethanol 122.85
    2,2,2-trifluoroethanol 85.36
    methyl butyrate 97.35

    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