Atrazine

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  • Identifiers

    CAS number
    1912-24-9

    Molecular formula
    C8H14ClN5

    SMILES
    CCNC1=NC(=NC(=N1)Cl)NC(C)C

    Safety labels

    Health Hazard
    Health

    Environmental Hazard
    Environmental

  • Odor profile

    Fragrance
    Fishy 38.59%
    Meaty 37.14%
    Odorless 34.23%
    Roasted 34.13%
    Cheesy 32.77%
    Savory 28.78%
    Ripe 27.76%
    Nutty 27.28%
    Animal 25.04%
    Burnt 24.11%

     

    Flavor
    Bitter 36.8%
    Roasted 28.98%
    Odorless 28.5%
    Mild 25.23%
    Bland 21.36%
    Tomato leaf 20.0%
    Green pepper 19.73%
    Syrup 19.34%
    Scallion 19.29%
    Carrot 19.27%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    2.6

    pKa est.
    5.38 (weak acid)

    Molecular weight
    215.68 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Melting point expt.

    • 347 to 351 °F (NTP, 1992)
    • 177.0 °C
    • 173 °C
    • 173-177 °C
    • 340 °F

    Boiling point

    • Decomposes (NIOSH, 2024)
    • 205 °C/101 kPa
    • No boiling point at normal pressure; decomposes on heating
    • decomposes
    • Decomposes

    Flash point

    • 170.92 ˚C est.

    Solubility expt.

    • less than 1 mg/mL at 67.1 °F (NTP, 1992)
    • In water, 33.0 mg/L at 25 °C
    • In water, 34.7 mg/L at 26 °C
    • 183 g/kg DMSO; 52 g/kg chloroform; 28 g/kg ethyl acetate; 18 g/kg methanol; 12 g/kg diethyl ether; 0.36 g/kg pentane
    • 0.0347 mg/mL at 26 °C
    • Solubility in water, g/100ml at 25 °C: (none)
    • 0.003%

  • Synonyms

    • atrazine
    • 1912-24-9
    • Gesaprim
    • Atranex
    • Oleogesaprim
    • Atazinax
    • Atrasine
    • Chromozin
    • Gesoprim
    • Hungazin
    • Strazine
    • Aatrex
    • Aktikon
    • Argezin
    • Atrazin
    • Cyazin
    • Inakor
    • Pitezin
    • Primaze
    • Radazin
    • Vectal
    • Zeazin
    • Zeazine
    • Wonuk
    • Cekuzina-T
    • Actinite PK
    • Aktinit A
    • Atratol A
    • Aktikon PK
    • Crisatrina
    • Crisazine
    • Weedex A
    • Akticon
    • Atrataf
    • Fenamin
    • Fenamine
    • Fenatrol
    • Griffex
    • Primatol
    • Radizin
    • Aatram
    • Atred
    • Atrex
    • Candex
    • Zeapos
    • Primatol A
    • Hungazin PK
    • Aatrex nine-O
    • Aktinit PK
    • Herbatoxol
    • Vectal SC
    • Atratol
    • Zeopos
    • Farmco atrazine
    • Aatrex 4L
    • Gesaprim 50
    • Triazine A 1294
    • Aatrex 80W
    • Azoprim
    • Gesaprin
    • Maizina
    • Radizine
    • 2-Chloro-4-ethylamino-6-isopropylamino-1,3,5-triazine
    • Geigy 30,027
    • 1,3,5-Triazine-2,4-diamine, 6-chloro-N-ethyl-N'-(1-methylethyl)-
    • Shell atrazine herbicide
    • Aneldazin
    • 6-Chloro-N-ethyl-N'-(1-methylethyl)-1,3,5-triazine-2,4-diamine
    • 2-Chloro-4-ethylamino-6-isopropylamino-s-triazine
    • Aatrex 4LC
    • Hungazin (VAN)
    • 2-Chloro-4-ethylamineisopropylamine-s-triazine
    • Aatram 20G
    • Ceasin 50
    • Crisamina
    • Farmozine
    • Laddock
    • Mebazine
    • Zeaphos
    • Fogard
    • 2-Ethylamino-4-isopropylamino-6-chloro-s-triazine
    • A 361
    • Caswell No. 063
    • DTXSID9020112
    • 102029-43-6
    • 1-Chloro-3-ethylamino-5-isopropylamino-s-triazine
    • Atrazine [ANSI:BSI:ISO]
    • s-Triazine, 2-chloro-4-(ethylamino)-6-(isopropylamino)-
    • Atraflow
    • CCRIS 1025
    • HSDB 413
    • Primoleo
    • Attrex
    • Atraflow plus
    • UNII-QJA9M5H4IM
    • G 30027
    • QJA9M5H4IM
    • Radazin T
    • Atrazine 4l
    • AI3-28244
    • Griffex 4l
    • 2-Chloro-4-(2-propylamino)-6-ethylamino-s-triazine
    • EINECS 217-617-8
    • Atrazine 80W
    • 1-Chloro-3-ethylamino-5-isopropylamino-2,4,6-triazine
    • Oleogesaprim 200
    • Azinotox 500
    • EPA Pesticide Chemical Code 080803
    • Gesaprim 500
    • NSC 163046
    • 2-Chloro-4-(ethylamino)-6-(isopropylamino)-1,3,5-triazine
    • 6-chloro-N-ethyl-N'-isopropyl-1,3,5-triazine-2,4-diamine
    • 6-Chloro-N2-ethyl-N4-isopropyl-1,3,5-triazine-2,4-diamine
    • BRN 0612020
    • CHEBI:15930
    • 6-chloro-4-N-ethyl-2-N-propan-2-yl-1,3,5-triazine-2,4-diamine
    • s-Triazine, 2-chloro-4-ethylamino-6-isopropylamino-
    • 2-Aethylamino-4-chlor-6-isopropylamino-1,3,5-triazin
    • MFCD00041810
    • 2-CHLORO-4-ISOPROPYLAMINO-6-ETHYLAMINO -1,3,5-TRIAZINE
    • NSC-163046
    • 6-chloro-N-ethyl-N'-(propan-2-yl)-1,3,5-triazine-2,4-diamine
    • DTXCID90112
    • 2-Chloro-4-(ethylamino)-6-(isopropylamino)-s-triazine
    • 2-CHLORO-4-ISOPROPYLAMINO-6-ETHYLAMINO-1,3,5-TRIAZINE
    • 6-Chloro-N4-ethyl-N2-isopropyl-1,3,5-triazine-2,4-diamine
    • Atrazine Tautomer
    • 2-Aethylamino-4-chlor-6-isopropylamino-1,3,5-triazin [German]

  • Applications

    Atrazine is primarily used in agriculture as a selective herbicide to control broadleaf and grassy weeds in maize and other row crops. It is formulated in liquid or granular products for pre-emergence and early post-emergence applications, often deployed in tank mixes with other herbicides to broaden spectrum and manage resistance. It serves as the active ingredient in crop-protection formulations and is commonly paired with adjuvants to improve soil and foliar uptake and rainfastness. Its use is subject to local regulations and formulation limits, reflecting ongoing environmental and stewardship considerations in weed management programs.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 13.57
    methanol 14.38
    isopropanol 10.08
    water 1.25
    ethyl acetate 29.9
    n-propanol 12.63
    acetone 34.73
    n-butanol 12.47
    acetonitrile 7.92
    DMF 163.76
    toluene 5.37
    isobutanol 11.61
    1,4-dioxane 34.8
    methyl acetate 28.22
    THF 137.99
    2-butanone 24.2
    n-pentanol 12.67
    sec-butanol 10.6
    n-hexane 0.62
    ethylene glycol 22.63
    NMP 290.29
    cyclohexane 1.14
    DMSO 146.06
    n-butyl acetate 22.74
    n-octanol 8.11
    chloroform 40.53
    n-propyl acetate 23.0
    acetic acid 116.35
    dichloromethane 35.71
    cyclohexanone 57.83
    propylene glycol 34.74
    isopropyl acetate 22.39
    DMAc 154.07
    2-ethoxyethanol 29.27
    isopentanol 12.41
    n-heptane 0.76
    ethyl formate 21.38
    1,2-dichloroethane 22.18
    n-hexanol 15.2
    2-methoxyethanol 58.83
    isobutyl acetate 19.16
    tetrachloromethane 5.91
    n-pentyl acetate 19.02
    transcutol 55.58
    n-heptanol 9.6
    ethylbenzene 3.31
    MIBK 15.23
    2-propoxyethanol 47.9
    tert-butanol 14.92
    MTBE 7.77
    2-butoxyethanol 29.88
    propionic acid 55.21
    o-xylene 4.78
    formic acid 43.29
    diethyl ether 5.68
    m-xylene 4.32
    p-xylene 6.03
    chlorobenzene 16.02
    dimethyl carbonate 37.4
    n-octane 0.35
    formamide 39.27
    cyclopentanone 119.66
    2-pentanone 21.74
    anisole 12.43
    cyclopentyl methyl ether 32.14
    gamma-butyrolactone 170.92
    1-methoxy-2-propanol 50.67
    pyridine 38.56
    3-pentanone 17.43
    furfural 128.6
    n-dodecane 0.44
    diethylene glycol 51.18
    diisopropyl ether 2.87
    tert-amyl alcohol 14.73
    acetylacetone 53.95
    n-hexadecane 0.51
    acetophenone 23.43
    methyl propionate 35.66
    isopentyl acetate 23.06
    trichloroethylene 68.37
    n-nonanol 8.43
    cyclohexanol 19.08
    benzyl alcohol 21.31
    2-ethylhexanol 10.96
    isooctanol 8.46
    dipropyl ether 7.33
    1,2-dichlorobenzene 18.19
    ethyl lactate 28.55
    propylene carbonate 100.57
    n-methylformamide 45.29
    2-pentanol 8.35
    n-pentane 0.5
    1-propoxy-2-propanol 33.18
    1-methoxy-2-propyl acetate 38.13
    2-(2-methoxypropoxy) propanol 40.52
    mesitylene 3.14
    ε-caprolactone 65.2
    p-cymene 4.61
    epichlorohydrin 96.67
    1,1,1-trichloroethane 22.76
    2-aminoethanol 27.53
    morpholine-4-carbaldehyde 144.61
    sulfolane 300.09
    2,2,4-trimethylpentane 0.74
    2-methyltetrahydrofuran 53.24
    n-hexyl acetate 23.21
    isooctane 0.45
    2-(2-butoxyethoxy)ethanol 44.45
    sec-butyl acetate 17.06
    tert-butyl acetate 24.39
    decalin 1.0
    glycerin 71.31
    diglyme 59.93
    acrylic acid 74.63
    isopropyl myristate 10.71
    n-butyric acid 54.66
    acetyl acetate 39.29
    di(2-ethylhexyl) phthalate 25.45
    ethyl propionate 22.28
    nitromethane 96.79
    1,2-diethoxyethane 13.23
    benzonitrile 19.56
    trioctyl phosphate 17.26
    1-bromopropane 7.61
    gamma-valerolactone 146.03
    n-decanol 6.97
    triethyl phosphate 19.33
    4-methyl-2-pentanol 6.76
    propionitrile 8.56
    vinylene carbonate 77.53
    1,1,2-trichlorotrifluoroethane 152.88
    DMS 38.89
    cumene 3.31
    2-octanol 6.36
    2-hexanone 18.69
    octyl acetate 16.4
    limonene 6.21
    1,2-dimethoxyethane 36.37
    ethyl orthosilicate 15.97
    tributyl phosphate 18.66
    diacetone alcohol 41.17
    N,N-dimethylaniline 11.43
    acrylonitrile 16.12
    aniline 18.3
    1,3-propanediol 30.1
    bromobenzene 13.67
    dibromomethane 17.98
    1,1,2,2-tetrachloroethane 56.85
    2-methyl-cyclohexyl acetate 25.25
    tetrabutyl urea 25.05
    diisobutyl methanol 6.18
    2-phenylethanol 23.8
    styrene 4.42
    dioctyl adipate 24.82
    dimethyl sulfate 98.0
    ethyl butyrate 20.46
    methyl lactate 54.32
    butyl lactate 29.98
    diethyl carbonate 19.38
    propanediol butyl ether 41.76
    triethyl orthoformate 19.25
    p-tert-butyltoluene 4.8
    methyl 4-tert-butylbenzoate 33.9
    morpholine 48.9
    tert-butylamine 6.13
    n-dodecanol 5.59
    dimethoxymethane 53.22
    ethylene carbonate 58.11
    cyrene 71.35
    2-ethoxyethyl acetate 28.82
    2-ethylhexyl acetate 18.96
    1,2,4-trichlorobenzene 31.36
    4-methylpyridine 31.86
    dibutyl ether 5.5
    2,6-dimethyl-4-heptanol 6.18
    DEF 40.08
    dimethyl isosorbide 71.72
    tetrachloroethylene 33.99
    eugenol 37.95
    triacetin 40.47
    span 80 47.78
    1,4-butanediol 18.15
    1,1-dichloroethane 16.26
    2-methyl-1-pentanol 13.02
    methyl formate 41.47
    2-methyl-1-butanol 12.58
    n-decane 0.55
    butyronitrile 9.98
    3,7-dimethyl-1-octanol 8.37
    1-chlorooctane 3.28
    1-chlorotetradecane 1.87
    n-nonane 0.45
    undecane 0.49
    tert-butylcyclohexane 0.96
    cyclooctane 0.45
    cyclopentanol 38.97
    tetrahydropyran 23.71
    tert-amyl methyl ether 9.31
    2,5,8-trioxanonane 54.7
    1-hexene 2.4
    2-isopropoxyethanol 22.99
    2,2,2-trifluoroethanol 54.44
    methyl butyrate 29.49

    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