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Common NameTridemorph
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中文通用名十三吗啉
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IUPACreaction mixture of 4-alkyl-2,6-dimethylmorpholines, where “alkyl” is mixture of C11–C14 homologues of which 60–70% is tridecyl
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CAStridemorph
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CAS No.81412-43-3
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Molecular FormulaC19H39NO (major component)
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Molecular Structure
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Category
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ActivityFungicide
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PremixEmulsifiable concentrate. Premix Parters: ametryn; prometryn;
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Physical PropertiesMolecular weight:297.5 (approx.); Physical form:Yellow, oily liquid, with a slight amine-like odour. Density:0.86 ( tech.) (20 °C); Composition:Originally thought to consist only of tridecyl (C13) isomers, the reaction mixture has now been shown to comprise C11 to C14 homologues containing 60-70% of 4-tridecyl isomers, 0.2% C9 and C15 homolog Flash point:142 °C (Pensky-Martens); Vapour pressure:12 mPa (20 °C); Henry constant:3.2 Pa m3 mol-1 ( calc.); Partition coefficient(n-octanol and water):logP = 4.20 ( pH 7, 22 °C); pKa:6.50 (20 °C), base; Solubility:In water 1.1 mg/l ( pH 7, 20 °C). Miscible with ethanol, acetone, ethyl acetate, cyclohexane, diethyl ether, benzene, chloroform, olive oil.; Stability:Stable ×50 °C. On u.v. irradiation of an aqueous solution containing 20 mg/kg, 50% hydrolysis occurs in 16.5 h.;
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ToxicologyOral:Acute oral LD50 for rats 480 mg/kg. Percutaneous:Acute percutaneous LD50 for rats >4000 mg/kg. Skin irritant; not an eye irritant (rabbits). Inhalation: LC50 (4 h) for rats 4.5 mg/l air. Phytotoxicity:Scorch may occur on some winter wheat varieties under certain climatic conditions.
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Environmental ProfileEcotoxicology:
Algae:(96 h) 0.28 mg/l.Bees:LD50 (24 h) >200 µg/bee.Birds: LD50 for quail 1388, ducks >2000 mg/kg.Daphnia:LC50 (48 h) 1.3 mg/l.Fish:LC50 (96 h) for trout 3.4 mg/l.Worms: LC50 (14 d) for Eisenia foetida 880 mg/kg.
Environmental fate:
Animals:In rats, following oral administration, tridemorph is rapidly absorbed, and is almost completely eliminated within 2 days.Soil: DT50 (lab.) 20-50 d, (field) 14-34 d. Koc 2500-10 000.Plant:Residues in cereal grains at harvest are <0.05 mg/kg, mostly polar material. Metabolism proceeds via oxidation of the 4-alkyl side-chain and/or by opening of the morpholine ring. -
Transport InformationSignal Word:WARNING; Hazard Class:II(Moderately hazardous)
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