Tridemorph

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Chemical Identification | General Product Information | Physical & Safety Data

Chemical Identification

Common Name

Tridemorph

中文通用名

十三吗啉

IUPAC

reaction mixture of 4-alkyl-2,6-dimethylmorpholines, where “alkyl” is mixture of C₁₁–C₁₄ homologues of which 60–70% is tridecyl

CAS

tridemorph

CAS No.

81412-43-3

Molecular Formula

C₁₉H₃₉NO (major component)

Molecular Structure

General Product Information

Category

Fungicides > Morpholine fungicides

Activity

Fungicide

Premix

Emulsifiable concentrate. Premix Parters: ametryn; prometryn;

Physical & Safety Data

Physical Properties

Molecular 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.;

Toxicology

Oral: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.

Environmental Profile

Ecotoxicology:
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. K_oc 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 Information

Signal Word:WARNING; Hazard Class:II(Moderately hazardous)