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Common Name
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Trifluralin
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IUPAC Name
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α,α,α-trifluoro-2,6-dinitro-N,N-dipropyl-p-toluidine
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CAS Number
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1582-09-8
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Structural Formula
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Physical and Chemical Characteristics
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M.f. : C13H16F3N3O4
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Mol. Wt. : 335.3
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Form : Yellow-orange crystals.
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M.p.: 48.5-49 °C; (tech., 43-47.5 °C)
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B.p. : 96-97 °C/24 Pa
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V.p. : 6.1 mPa (25 °C) (EEC A4)
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Kow : logP = 4.83 (20 °C) (EEC A8)
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Henry : 15 Pa m3 mol-1 (calc.)
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S.g./density: 1.36 (22 °C) (EEC A3)
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Solubility:
In water 0.184 (pH 5), 0.221 (pH 7), 0.189 (pH 9) (all in mg/l) (EEC A6); tech. 0.343 (pH 5), 0.395 (pH 7), 0.383 (pH 9) (all in mg/l) (EEC A6). In acetone, chloroform, acetonitrile, toluene, ethyl acetate >1000, methanol 33-40, hexane 50-67 (all in g/l, 25 °C).
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Stability:
Stable at 52 °C (highest storage temperature tested). Stable to hydrolysis at pH 3, 6 and 9 (52 °C). Decomposed by u.v. irradiation (E. Leitis & D. G. Crosby, J. Agric. Food Chem., 1974, 22, 842).
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pKa: N/A
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F.p.: 151 °C (closed cup); tech. 153 °C (open cup) (both Pensky-Martens)
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Specification
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Trifluralin content, % ≥95.0
N-nitroso-di-n-propylamine content, mg/kg ≤ 1
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