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5,6-dihydro-2-methyl-1,4-oxathiin-3-carboxanilide; 5,6-dihydro-2-methyl-N-phenyl-1,4-oxathiin-3-carboxamide; 2-methyl-N-phenyl-5,6-dihydro-1,4-oxathiine-3-carboxamide

5,6-dihydro-2-methyl-1,4-oxathi-ine-3-carboxanilide

C₁₂H₁₃NO₂S

Form Pale yellow powder with a slight sulfurous odour.

Melting point 91-92℃.

Density 1.45. Solubility In water 0.147 g/l (20℃). In acetone 221.2, methanol 89.33, ethyl acetate 107.7 (g/l, 20℃).

Oral Acute oral LD50 for rats 2864 mg/kg.

Skin and eye Acute percutaneous LD50 for rabbits >4000 mg/kg. Non-irritating to eyes and skin (rabbits).

Inhalation LC50 (4 h) for rats >4.7 mg/l air.

Seed treatment for control of smuts and bunts (particularly loose smut, Ustilago spp.),on barley, wheat, and oats; seedling diseases (particularly Rhizoctonia spp.) of barley, wheat, oats, rice, cotton, peanuts, soya beans, vegetables, maize, sorghum, and other crops. The dimorphic forms do not differ in fungicidal activity.

Description: White to almost white crystal powder, free from visible extraneous matter;

Active Ingredient Content(w/w): ≥98%;

Acidity (as H2SO4)(w/w): ≤0.5%;

Loss on Drying(w/w): ≤1.0%;

Acetone Insoluble Material(w/w): ≤0.5%