Terbacil

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  • Identifiers

    CAS number
    5902-51-2

    Molecular formula
    C9H13ClN2O2

    SMILES
    CC1=C(C(=O)N(C(=O)N1)C(C)(C)C)Cl

    Safety labels

    Irritant
    Irritant

    Environmental Hazard
    Environmental

  • Odor profile

    Fragrance
    Odorless 35.69%
    Dry 25.63%
    Mint 23.89%
    Animal 23.47%
    Burnt 21.54%
    Woody 21.38%
    Bitter 21.11%
    Phenolic 20.69%
    Herbal 20.27%
    Musty 19.48%

     

    Flavor
    Bitter 63.38%
    Odorless 23.66%
    Cedarleaf 20.59%
    Green pepper 20.47%
    Soybean 19.98%
    Carrot 19.79%
    Shellfish 19.78%
    Broom 19.75%
    Syrup 19.68%
    Roasted peanuts 19.54%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    1.9

    pKa est.
    6.69 (neutral)

    Molecular weight
    216.66 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Melting point expt.

    • 175-177 °C
    • Stable up to the melting point; stable in aqueous alkaline media at room temperature

    Boiling point

    • Sublimation begins below the melting point

    Flash point

    • 168.18 ˚C est.

    Solubility expt.

    • Solubilities (g/kg, 25 °C): dimethylformamide 337 g/kg; cyclohexanone 220; methyl isobutyl ketone 121; butyl acetate 88 g/kg; xylene 65
    • Sparingly soluble in mineral oils and aliphatic hydrocarbons; readily soluble in strong aqueous alkalis
    • In water, 710 mg/L at 25 °C

  • Synonyms

    • TERBACIL
    • 5902-51-2
    • Turbacil
    • Geonter
    • Sinbar
    • 3-tert-Butyl-5-chloro-6-methyluracil
    • Compound 732
    • Caswell No. 821A
    • Du Pont 732
    • Du Pont herbicide 732
    • Terbacil [ISO]
    • Experimental herbicide 732
    • Terbacil [ANSI:BSI:ISO]
    • 3-tert-butyl-5-chloro-6-methyl-1H-pyrimidine-2,4-dione
    • HSDB 1418
    • 3-tert-butyl-5-chloro-6-methyl-1,2,3,4-tetrahydropyrimidine-2,4-dione
    • Uracil, 3-tert-butyl-5-chloro-6-methyl-
    • EINECS 227-595-1
    • 5-Chloro-3-tert-butyl-6-methyluracil
    • Herbicide 732
    • EPA Pesticide Chemical Code 012701
    • BRN 0643054
    • DTXSID8024317
    • UNII-S0017J6E25
    • TERBACIL [HSDB]
    • TERBACIL [MI]
    • 3-tert.Butyl-5-chlor-6-methyluracil
    • Sinbar 80W (Salt/Mix)
    • S0017J6E25
    • 5-Chloro-3-(1,1-dimethylethyl)-6-methyl-2,4(1H,3H)-pyrimidinedione
    • 2,4(1H,3H)-Pyrimidinedione, 5-chloro-3-(1,1-dimethylethyl)-6-methyl-
    • CHEBI:9447
    • DPX-D732
    • DTXCID104317
    • 5-24-07-00036 (Beilstein Handbook Reference)
    • Terbacil 10 microg/mL in Isooctane
    • 3-tert-butyl-5-chloro-6-methylpyrimidine-2,4(1H,3H)-dione
    • 3-(tert-Butyl)-5-chloro-6-methylpyrimidine-2,4(1H,3H)-dione
    • Terbacil (ANSI:BSI:ISO)
    • 5-Chloro-3-(1,1-dimethylethyl)-6-methyl-pyrimidinedione
    • terbacyl
    • CAS-5902-51-2
    • 3-t-Butyl-5-chloro-6-methyluracil
    • Turbsvil
    • 3-tert.Butyl-5-chlor-6-methyluracil [German]
    • DuPont Herbicide 732
    • ChemDiv2_000511
    • 3tButyl5chloro6methyluracil
    • SCHEMBL53799
    • 3tertButyl5chloro6methyluracil
    • 5Chloro3tertbutyl6methyluracil
    • 3tert.Butyl5chlor6methyluracil
    • CHEMBL1901822
    • SCHEMBL23302272
    • HMS1370H05
    • FAA90251
    • Tox21_201244
    • Tox21_300831
    • STK874197
    • 3-tert-butyl-5-chlor-6-methyluracil
    • AKOS001022252
    • USEPA/OPP Pesticide Code: 012701
    • NCGC00163865-01
    • NCGC00163865-02
    • NCGC00163865-03
    • NCGC00163865-04
    • NCGC00163865-05
    • NCGC00254735-01
    • NCGC00258796-01
    • CS-0236047
    • NS00009250
    • Terbacil, PESTANAL(R), analytical standard
    • EN300-16676
    • 3-tert-Butyl-5-Chlor-6-Methyluracil (German)
    • G48282
    • 5902-51-2_x000D_
    • SR-01000445711
    • Q2404316
    • SR-01000445711-1
    • Z56754343
    • 2,4(1H,3H)Pyrimidinedione, 5chloro3(1,1dimethylethyl)6methyl
    • 3-tert-Butyl-5-chloro-6-methyl-2,4(1H,3H)-pyrimidinedione #
    • 5Chloro3(1,1dimethylethyl)6methyl2,4(1H,3H)pyrimidinedione
    • 227-595-1
    • 3-tert-butyl-5-chloro-6-methyluracil, 5-chloro-3-(1,1-dimethylethyl)-6-methyl-2,4(1H,3H)-pyrimidinedione

  • Applications

    Terbacil (CAS 5902-51-2) is a selective herbicide of the triazine class, used in agriculture to control weeds that compete with crops. Typical applications include soil treatments pre-emergence or early post-emergence to limit weed competition in agricultural crops; it is evaluated for use in landscape and ornamental plant care to manage weeds; applied in turf management, such as golf courses and lawns; and used in forestry or reforestation contexts to protect young trees from weed competition.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 64.18
    methanol 72.56
    isopropanol 56.17
    water 1.94
    ethyl acetate 54.25
    n-propanol 57.14
    acetone 94.59
    n-butanol 55.77
    acetonitrile 56.26
    DMF 322.59
    toluene 27.93
    isobutanol 46.26
    1,4-dioxane 95.45
    methyl acetate 61.8
    THF 230.84
    2-butanone 75.51
    n-pentanol 48.95
    sec-butanol 52.35
    n-hexane 2.91
    ethylene glycol 24.29
    NMP 257.6
    cyclohexane 5.04
    DMSO 155.43
    n-butyl acetate 43.52
    n-octanol 29.02
    chloroform 123.69
    n-propyl acetate 45.43
    acetic acid 103.86
    dichloromethane 104.44
    cyclohexanone 131.72
    propylene glycol 55.0
    isopropyl acetate 33.31
    DMAc 208.21
    2-ethoxyethanol 58.74
    isopentanol 41.61
    n-heptane 2.77
    ethyl formate 77.48
    1,2-dichloroethane 58.54
    n-hexanol 53.72
    2-methoxyethanol 123.86
    isobutyl acetate 29.92
    tetrachloromethane 13.18
    n-pentyl acetate 36.06
    transcutol 50.02
    n-heptanol 30.05
    ethylbenzene 17.58
    MIBK 34.19
    2-propoxyethanol 89.85
    tert-butanol 53.55
    MTBE 23.52
    2-butoxyethanol 47.85
    propionic acid 67.97
    o-xylene 18.39
    formic acid 53.32
    diethyl ether 22.39
    m-xylene 19.62
    p-xylene 28.44
    chlorobenzene 48.1
    dimethyl carbonate 34.64
    n-octane 1.72
    formamide 69.16
    cyclopentanone 178.83
    2-pentanone 58.4
    anisole 38.94
    cyclopentyl methyl ether 66.83
    gamma-butyrolactone 200.4
    1-methoxy-2-propanol 104.85
    pyridine 116.67
    3-pentanone 38.81
    furfural 183.72
    n-dodecane 1.98
    diethylene glycol 71.13
    diisopropyl ether 6.97
    tert-amyl alcohol 48.15
    acetylacetone 69.85
    n-hexadecane 2.24
    acetophenone 51.1
    methyl propionate 60.65
    isopentyl acetate 36.59
    trichloroethylene 135.73
    n-nonanol 26.94
    cyclohexanol 63.14
    benzyl alcohol 58.47
    2-ethylhexanol 30.86
    isooctanol 23.8
    dipropyl ether 18.04
    1,2-dichlorobenzene 40.67
    ethyl lactate 41.75
    propylene carbonate 127.82
    n-methylformamide 117.24
    2-pentanol 35.0
    n-pentane 2.72
    1-propoxy-2-propanol 63.2
    1-methoxy-2-propyl acetate 47.37
    2-(2-methoxypropoxy) propanol 46.59
    mesitylene 10.78
    ε-caprolactone 114.19
    p-cymene 13.71
    epichlorohydrin 158.92
    1,1,1-trichloroethane 51.94
    2-aminoethanol 50.35
    morpholine-4-carbaldehyde 169.7
    sulfolane 205.37
    2,2,4-trimethylpentane 2.12
    2-methyltetrahydrofuran 116.11
    n-hexyl acetate 46.74
    isooctane 1.44
    2-(2-butoxyethoxy)ethanol 56.14
    sec-butyl acetate 26.45
    tert-butyl acetate 30.51
    decalin 3.49
    glycerin 65.54
    diglyme 69.98
    acrylic acid 68.02
    isopropyl myristate 17.72
    n-butyric acid 90.67
    acetyl acetate 36.47
    di(2-ethylhexyl) phthalate 29.66
    ethyl propionate 40.77
    nitromethane 138.02
    1,2-diethoxyethane 25.74
    benzonitrile 66.88
    trioctyl phosphate 22.68
    1-bromopropane 35.29
    gamma-valerolactone 206.04
    n-decanol 21.61
    triethyl phosphate 23.39
    4-methyl-2-pentanol 21.9
    propionitrile 48.88
    vinylene carbonate 111.35
    1,1,2-trichlorotrifluoroethane 113.87
    DMS 37.94
    cumene 13.24
    2-octanol 23.68
    2-hexanone 50.09
    octyl acetate 26.64
    limonene 17.93
    1,2-dimethoxyethane 98.21
    ethyl orthosilicate 21.26
    tributyl phosphate 23.8
    diacetone alcohol 59.76
    N,N-dimethylaniline 32.82
    acrylonitrile 69.75
    aniline 55.33
    1,3-propanediol 63.29
    bromobenzene 40.62
    dibromomethane 70.46
    1,1,2,2-tetrachloroethane 105.75
    2-methyl-cyclohexyl acetate 36.73
    tetrabutyl urea 37.13
    diisobutyl methanol 16.02
    2-phenylethanol 58.04
    styrene 20.03
    dioctyl adipate 29.29
    dimethyl sulfate 63.24
    ethyl butyrate 34.98
    methyl lactate 56.52
    butyl lactate 40.53
    diethyl carbonate 26.84
    propanediol butyl ether 52.79
    triethyl orthoformate 26.33
    p-tert-butyltoluene 13.39
    methyl 4-tert-butylbenzoate 44.18
    morpholine 128.07
    tert-butylamine 27.67
    n-dodecanol 16.65
    dimethoxymethane 105.07
    ethylene carbonate 85.13
    cyrene 76.46
    2-ethoxyethyl acetate 38.21
    2-ethylhexyl acetate 30.39
    1,2,4-trichlorobenzene 52.0
    4-methylpyridine 118.26
    dibutyl ether 17.69
    2,6-dimethyl-4-heptanol 16.02
    DEF 84.22
    dimethyl isosorbide 80.74
    tetrachloroethylene 55.31
    eugenol 56.22
    triacetin 38.12
    span 80 50.1
    1,4-butanediol 36.32
    1,1-dichloroethane 61.46
    2-methyl-1-pentanol 39.9
    methyl formate 101.72
    2-methyl-1-butanol 43.17
    n-decane 2.9
    butyronitrile 64.92
    3,7-dimethyl-1-octanol 25.37
    1-chlorooctane 13.48
    1-chlorotetradecane 6.21
    n-nonane 2.52
    undecane 2.38
    tert-butylcyclohexane 3.07
    cyclooctane 1.49
    cyclopentanol 96.65
    tetrahydropyran 85.96
    tert-amyl methyl ether 23.32
    2,5,8-trioxanonane 60.85
    1-hexene 14.72
    2-isopropoxyethanol 41.65
    2,2,2-trifluoroethanol 42.73
    methyl butyrate 62.4

    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