Oxadiazon

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  • Identifiers

    CAS number
    19666-30-9

    Molecular formula
    C15H18Cl2N2O3

    SMILES
    CC(C)OC1=C(C=C(C(=C1)N2C(=O)OC(=N2)C(C)(C)C)Cl)Cl

    Safety labels

    Environmental Hazard
    Environmental

  • Odor profile

    Fragrance
    Fruity 34.86%
    Musk 29.96%
    Dry 26.6%
    Animal 25.97%
    Odorless 25.88%
    Woody 21.4%
    Burnt 21.16%
    Fatty 20.93%
    Phenolic 20.77%
    Leathery 19.44%

     

    Flavor
    Bitter 73.16%
    Bland 22.78%
    Odorless 22.49%
    Green pepper 20.38%
    Cedarleaf 20.25%
    Carrot 19.82%
    Parsley 19.58%
    Syrup 19.26%
    Broom 18.91%
    Tomato leaf 18.88%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    4.8

    pKa est.
    5.47 (weak acid)

    Molecular weight
    345.2 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Boiling point est.
    395°C

    Melting point expt.

    • 90 °C

    Flash point

    • 170.27 ˚C est.

    Solubility expt.

    • Solubility in methanol, ethanol ca 100, cyclohexane 200, acetone, isophorone, methyl ethyl ketone, carbon tetrachloride ca 600, toluene, benzene, chloroform ca 1000 (all in g/l, 20 °C)
    • Soluble in solvents
    • In water, 0.7 mg/l @ 24 °C

  • Synonyms

    • OXADIAZON
    • 19666-30-9
    • Ronstar
    • Oxadiazone
    • Oxydiazon
    • 5-tert-butyl-3-(2,4-dichloro-5-propan-2-yloxyphenyl)-1,3,4-oxadiazol-2-one
    • RP 17623
    • Oxadiazon [ISO]
    • C6U0E0YTP6
    • 5-(tert-Butyl)-3-(2,4-dichloro-5-isopropoxyphenyl)-1,3,4-oxadiazol-2(3H)-one
    • DTXSID3024239
    • G 315
    • 5-tert-Butyl-3-(2,4-dichloro-5-isopropoxyphenyl)-1,3,4-oxadiazol-2(3H)-one
    • OXADIAZON [MI]
    • OXADIAZON [HSDB]
    • DTXCID304239
    • CHEBI:81786
    • 2-tert-Butyl-4-(2,4-dichloro-5-isopropyloxyphenyl)-1,3,4-oxadiazolin-5-one
    • 1,3,4-Oxadiazol-2(3H)-one, 3-[2,4-dichloro-5-(1-methylethoxy)phenyl]-5-(1,1-dimethylethyl)-
    • 1,3,4-Oxazol-2(3H)-one, 3-(2,4-dichloro-5-(1-methylethoxy)phenyl)-5-(1,1-dimethylethyl)-
    • 3-(2,4-Dichloro-5-(1-methylethoxy)phenyl)-5-(1,1-dimethylethyl)-1,3,4-oxadiazol-2(3H)-one
    • 3-[2,4-Dichloro-5-(1-methylethoxy)phenyl]-5-(1,1-dimethylethyl)-1,3,4-oxadiazol-2(3H)-one
    • Oxadiazon 10 microg/mL in Cyclohexane
    • Oxadiazon 10 microg/mL in Acetonitrile
    • Oxadiazon 100 microg/mL in Cyclohexane
    • RP-17623
    • 1,3,4-Oxadiazol-2(3H)-one, 3-(2,4-dichloro-5-(1-methylethoxy)phenyl)-5-(1,1-dimethylethyl)-
    • Caswell No. 624A
    • Oxadiazon [ANSI:BSI:ISO]
    • CAS-19666-30-9
    • HSDB 6936
    • EINECS 243-215-7
    • UNII-C6U0E0YTP6
    • EPA Pesticide Chemical Code 109001
    • BRN 0558070
    • Ronstan
    • 5-tert-butyl-3-(2,4-dichloro-5-(1-methylethoxy)phenyl)-1,3,4-oxadiazol-2(3H)-one
    • 5-tert-butyl-3-(2,4-dichloro-5-(propan-2-yloxy)phenyl)-2,3-dihydro-1,3,4-oxadiazol-2-one
    • 5-tert-butyl-3-[2,4-dichloro-5-(1-methylethoxy)phenyl]-1,3,4-oxadiazol-2(3H)-one
    • 5-tert-butyl-3-[2,4-dichloro-5-(propan-2-yloxy)phenyl]-2,3-dihydro-1,3,4-oxadiazol-2-one
    • Scotts OH I
    • Ronstar 50W
    • MFCD00128056
    • Oxadiazon in Acetone
    • Oxadiazon (Standard)
    • Ronstar 2G (Salt/Mix)
    • Pesticide Code 109001
    • 2-tert-Butyl-4-(2,4-dichloro-5-isopropoxyphenyl)-delta(sup 2)-1,3,4-oxadiazolin-5-one
    • 3-(2,4-Dichloro-5-isopropyloxy-phenyl)-delta(sup 4)-5-(tert-butyl)-1,3,4-oxadiazoline-2-one
    • SCHEMBL38813
    • CHEMBL1080648
    • CHNUNORXWHYHNE-UHFFFAOYSA-
    • HY-B1880R
    • GLXC-25524
    • HY-B1880
    • Tox21_201877
    • Tox21_300668
    • BDBM50359941
    • 2-tert-Butyl-4-(2,4-dichloro-5-isopropoxyphenyl)-1,3,4-oxadiazolin-5-one
    • 2-tert-Butyl-4-(2,4-dichloro-5-isopropoxyphenyl)-5-oxo-1,3,4-oxadiazoline
    • AKOS015917677
    • CS-5211
    • DS-6328
    • 2-(tert-butyl)-4-(2,4-dichloro-5-isopropyloxy-phenyl) delta(2)-1,3,4-oxadiazoline-5-one
    • 2-tert-Butyl-4-(2,4-dichloro-5-isopropoxyphenyl)-delta2-1,3,4-oxadiazolin-5-one
    • 2-tert-Butyl-4-(2,4-dichloro-5-isopropoxyphenyl)-delta2-1,3,4-oxadiazoline-5-one
    • delta(sup 2)-1,3,4-Oxadiazolin-5-one, 2-tert-butyl-4-(2,4-dichloro-5-isopropyloxyphenyl)-
    • s10397
    • NCGC00163727-01
    • NCGC00163727-02
    • NCGC00163727-03
    • NCGC00163727-04
    • NCGC00163727-05
    • NCGC00254576-01
    • NCGC00259426-01
    • 17623 RP
    • 3-(2,4-Dichloro-5-(1-methylethoxy)phenyl)-5-(1,1-dimethylethyl)-1,3,4-oxadiazol-2(3H)-one (9CI)
    • AC-12699
    • DB-044937
    • RP 17,623
    • NS00008448
    • Oxadiazon, PESTANAL(R), analytical standard
    • C18496
    • Q1691365
    • 2tertButyl4(2,4dichloro5isopropoxyphenyl)delta21,3,4oxadiazolin5one
    • 2tertButyl4(2,4dichloro5isopropyloxyphenyl)1,3,4oxadiazolin5one
    • 5tertButyl3(2,4dichloro5isopropoxyphenyl)1,3,4oxadiazol2(3H)one
    • 2tertButyl4(2,4dichloro5isopropoxyphenyl)delta(sup 2)1,3,4oxadiazolin5one
    • 2tertButyl4(2,4dichloro5isopropoxyphenyl)delta21,3,4oxadiazolin5one (8CI)
    • 3-(2,4-Dichloro-5-isopropyloxyphenyl)-5-tert-butyl-1,3,4-oxadiazol-2-one
    • 5-t-butyl-3-(2,4-dichloro-5-isopropoxyphenyl)-1,3,4-oxadiazolin-2-one
    • 5-tert-Butyl-3-(2,4-dichloro-5-isopropoxyphenyl)-1,3,4-oxadiazolin-2-one
    • 5-tert-butyl-3-(2,4-dichloro-5-isopropoxyphenyl)-3,4-oxadiazol-2(3H)-one
    • .DELTA.2-1,3,4-Oxadiazolin-5-one, 2-tert-butyl-4-(2,4-dichloro-5-isopropoxyphenyl)-
    • .DELTA.2-1,3,4-Oxadiazolin-5-one, 2-tert-butyl-4-(2,4-dichloro-5-isopropyloxyphenyl)-
    • 1,3,4Oxazol2(3H)one, 3(2,4dichloro5(1methylethoxy)phenyl)5(1,1dimethylethyl)
    • 2-tert-Butyl-4-(2,4-dichloro-5-isopropoxyphenyl)-D2-1,3,4-oxadiazolin-5-one
    • 3(2,4Dichloro5(1methylethoxy)phenyl)5(1,1dimethylethyl)1,3,4oxadiazol2(3H)one
    • 3(2,4Dichloro5(1methylethoxy)phenyl)5(1,1dimethylethyl)1,3,4oxadiazol2(3H)one (9CI)
    • 3(2,4Dichloro5isopropyloxyphenyl)delta(sup 4)5(tertbutyl)1,3,4oxadiazoline2one
    • 3-(2,4-Dichloro-5-isopropoxyphenyl)-5-(2-methyl-2-propanyl)-1,3,4-oxadiazol-2(3H)-one
    • 3-(2,4-Dichloro-5-isopropyloxy-phenyl)-.delta.4-5-(tert-butyl)-1,3,4-oxadiazoline-2-one
    • 5-tert-Butyl-3-(2,4-dichloro-5-isopropoxyphenyl)-1,3,4-oxadiazol-2(3H)-one #
    • 243-215-7
    • 3-[2,4-dichloro-5-(1-methyl ethoxy)phenyl]-5-(1,1-dimethylethyl)-1,3,4-oxadiazol-2(3H)-one
    • InChI=1/C15H18Cl2N2O3/c1-8(2)21-12-7-11(9(16)6-10(12)17)19-14(20)22-13(18-19)15(3,4)5/h6-8H,1-5H3
    • S6Z

  • Applications

    Oxadiazon (CAS 19666-30-9) is a soil-applied pre-emergent herbicide used to suppress annual grasses and certain broadleaf weeds in turfgrass and ornamental horticulture. It is commonly applied as granular or liquid formulations for turf management on lawns, golf courses, and parks; in production settings it is used in greenhouses and nurseries to control weeds in container-grown ornamentals; and in professional landscape and grounds maintenance programs to protect established turf and landscape beds. Use is dictated by product labeling and local regulations.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 135.93
    methanol 92.89
    isopropanol 102.68
    water 0.03
    ethyl acetate 512.73
    n-propanol 135.61
    acetone 612.02
    n-butanol 150.36
    acetonitrile 315.8
    DMF 1537.41
    toluene 439.57
    isobutanol 132.77
    1,4-dioxane 439.98
    methyl acetate 541.23
    THF 1180.7
    2-butanone 677.59
    n-pentanol 126.89
    sec-butanol 165.93
    n-hexane 10.66
    ethylene glycol 22.94
    NMP 1535.03
    cyclohexane 17.13
    DMSO 590.02
    n-butyl acetate 348.1
    n-octanol 84.66
    chloroform 1687.51
    n-propyl acetate 315.06
    acetic acid 378.62
    dichloromethane 1366.83
    cyclohexanone 853.3
    propylene glycol 57.63
    isopropyl acetate 327.37
    DMAc 1660.62
    2-ethoxyethanol 275.22
    isopentanol 163.76
    n-heptane 7.81
    ethyl formate 319.62
    1,2-dichloroethane 794.23
    n-hexanol 142.99
    2-methoxyethanol 423.27
    isobutyl acetate 211.73
    tetrachloromethane 122.37
    n-pentyl acetate 273.66
    transcutol 619.14
    n-heptanol 88.28
    ethylbenzene 172.68
    MIBK 299.36
    2-propoxyethanol 372.31
    tert-butanol 132.5
    MTBE 307.59
    2-butoxyethanol 234.82
    propionic acid 231.92
    o-xylene 197.53
    formic acid 98.77
    diethyl ether 231.74
    m-xylene 220.46
    p-xylene 250.91
    chlorobenzene 641.25
    dimethyl carbonate 327.88
    n-octane 4.88
    formamide 190.64
    cyclopentanone 1121.22
    2-pentanone 521.48
    anisole 405.37
    cyclopentyl methyl ether 529.44
    gamma-butyrolactone 1081.5
    1-methoxy-2-propanol 375.29
    pyridine 891.8
    3-pentanone 403.49
    furfural 1045.74
    n-dodecane 5.01
    diethylene glycol 212.35
    diisopropyl ether 76.8
    tert-amyl alcohol 200.07
    acetylacetone 744.5
    n-hexadecane 6.12
    acetophenone 459.63
    methyl propionate 489.5
    isopentyl acetate 330.64
    trichloroethylene 2300.06
    n-nonanol 82.11
    cyclohexanol 219.99
    benzyl alcohol 326.78
    2-ethylhexanol 111.12
    isooctanol 83.11
    dipropyl ether 114.33
    1,2-dichlorobenzene 541.03
    ethyl lactate 171.33
    propylene carbonate 696.13
    n-methylformamide 424.93
    2-pentanol 120.02
    n-pentane 9.97
    1-propoxy-2-propanol 230.06
    1-methoxy-2-propyl acetate 394.72
    2-(2-methoxypropoxy) propanol 258.52
    mesitylene 94.26
    ε-caprolactone 751.38
    p-cymene 88.29
    epichlorohydrin 1382.18
    1,1,1-trichloroethane 886.89
    2-aminoethanol 66.07
    morpholine-4-carbaldehyde 1047.18
    sulfolane 1086.83
    2,2,4-trimethylpentane 14.41
    2-methyltetrahydrofuran 849.03
    n-hexyl acetate 320.72
    isooctane 6.75
    2-(2-butoxyethoxy)ethanol 295.43
    sec-butyl acetate 248.62
    tert-butyl acetate 323.49
    decalin 16.85
    glycerin 88.58
    diglyme 538.14
    acrylic acid 249.3
    isopropyl myristate 109.03
    n-butyric acid 344.3
    acetyl acetate 403.28
    di(2-ethylhexyl) phthalate 147.34
    ethyl propionate 307.54
    nitromethane 938.32
    1,2-diethoxyethane 265.54
    benzonitrile 478.02
    trioctyl phosphate 94.0
    1-bromopropane 390.66
    gamma-valerolactone 1313.8
    n-decanol 59.75
    triethyl phosphate 143.97
    4-methyl-2-pentanol 83.52
    propionitrile 252.07
    vinylene carbonate 632.97
    1,1,2-trichlorotrifluoroethane 905.73
    DMS 361.35
    cumene 99.2
    2-octanol 74.29
    2-hexanone 322.9
    octyl acetate 155.13
    limonene 124.29
    1,2-dimethoxyethane 504.8
    ethyl orthosilicate 129.59
    tributyl phosphate 119.42
    diacetone alcohol 348.44
    N,N-dimethylaniline 262.5
    acrylonitrile 383.98
    aniline 387.2
    1,3-propanediol 124.26
    bromobenzene 717.66
    dibromomethane 775.38
    1,1,2,2-tetrachloroethane 1545.48
    2-methyl-cyclohexyl acetate 216.91
    tetrabutyl urea 166.09
    diisobutyl methanol 56.91
    2-phenylethanol 281.68
    styrene 246.63
    dioctyl adipate 177.02
    dimethyl sulfate 573.09
    ethyl butyrate 233.29
    methyl lactate 255.43
    butyl lactate 202.23
    diethyl carbonate 183.45
    propanediol butyl ether 224.14
    triethyl orthoformate 166.62
    p-tert-butyltoluene 84.49
    methyl 4-tert-butylbenzoate 285.26
    morpholine 618.7
    tert-butylamine 76.69
    n-dodecanol 43.76
    dimethoxymethane 598.04
    ethylene carbonate 461.65
    cyrene 347.93
    2-ethoxyethyl acetate 377.9
    2-ethylhexyl acetate 287.15
    1,2,4-trichlorobenzene 698.23
    4-methylpyridine 1155.52
    dibutyl ether 107.59
    2,6-dimethyl-4-heptanol 56.91
    DEF 676.43
    dimethyl isosorbide 478.42
    tetrachloroethylene 689.64
    eugenol 281.72
    triacetin 334.05
    span 80 213.98
    1,4-butanediol 60.99
    1,1-dichloroethane 859.52
    2-methyl-1-pentanol 166.5
    methyl formate 383.9
    2-methyl-1-butanol 189.23
    n-decane 8.17
    butyronitrile 282.66
    3,7-dimethyl-1-octanol 99.64
    1-chlorooctane 68.3
    1-chlorotetradecane 26.69
    n-nonane 6.9
    undecane 6.17
    tert-butylcyclohexane 15.74
    cyclooctane 5.79
    cyclopentanol 253.16
    tetrahydropyran 474.53
    tert-amyl methyl ether 297.01
    2,5,8-trioxanonane 346.5
    1-hexene 76.06
    2-isopropoxyethanol 210.45
    2,2,2-trifluoroethanol 185.33
    methyl butyrate 409.97

    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