Pymethozine 50% WDG

IUPAC NAME:(E)-4,5-dihydro-6-methyl-4-(3-pyridylmethyleneamino)-1,2,4-triazin-3(2H)-one Molecular formula: C10H11N5O Molecular weight: 217.2 CAS no.: 123312-89-0 Applications:insecticide selective against Homoptera, causing them to stop feeding. Uses: Control of aphids and whitefly in vegetables, potatoes, ornamentals, cotton, deciduous and citrus fruit, tobacco, hops; both juvenile and adult stages are susceptible. Also for control of plant hoppers in rice. Application rates vary from 150g/ha on potatoes to 200 - 300g/ha on ornamentals, tobacco and cotton; 10 - 30g/hl on vegetables, fruit and hops. Toxicology: Oral: acute oral LD50 for rats 5820mg/kg, Skin and eyes: acute percutaneous LD50 for rats 2000mg/kg. Non-irritating, to the skin and eyes (rabbits). Not a skin sensitiser to guinea pigs. Inhalation: LC50 (4h) 1800mg/m3 air, NOEL: (2y) for rats 3.7mg/kg b.w. daily, ADI: 0.03mg/kg b.w. Other: non-mutagenic in 5 assay tests, including the Ames test, Birds: acute oral LD50 for bobwhite quails, mallard ducks 2000mg/kg. LC50 for bobwhite quails (8d) 5200ppm, Fish: LC50 (96h) for rainbow trout and common carp 100mg/L, Daphnia: LC50 (48h) 87mg/L, Algae: LC50 (72h) for Scenedesmus subspicatus 47.1; LC50(5d) for Selenastrum capricornutum 21.7mg/L, Bees: oral LD50 (48h) 117 (Lig/bee; contact LD50 (48h)200ig/bee, Worms: LC50 (14d) for Eisenia foetlda 1098mg/kg soil