Common name
Pymetrozine
Chemical name
4, 5 - dihydro - 6 - methyl - 4 - (3 - pyridine methylene amino) - 1,2,4-3 (2 h) - ketone
CAS No
123312-89-0
M.F.
C10H11N5O
Description
1.Melting Point:217°C
2.Vapour Pressure: (20°C):<9.7510-8pa(°C)
3.Molecular weight:217.23
4.density(20°C):1.36
5.Solubility (g/L) : in water0.29(25°C), ethanol 2.25(20°C);
6.Stability : decomposing DT50=4.3 days in water under pH=7
conditions,decomposing DT50=25 days in water under ph=5 conditions.
7.Appearance: colorless crystals.
Toxicity
1) Oral: acute oral LD50 for rats 5820mg/kg
2) Skin and eyes: acute percutaneous LD50 for rats >2000mg/kg.
Non-irritatingto the skin and eyes (rabbits). Not a ski sensitiser to guinea pigs.
3) Inhalation: LC50 (4h) >1800mg/m3 air
4) NOEL: (2y) for rats 3.7mg/kg b.w. daily
5) ADI: 0.03mg/kg b.w.
6) Other: non-mutagenic in 5 assay tests, including the Ames test
7) Birds: acute oral LD50 for bobwhite quails, mallard ducks >2000mg/kg.
LC50 for bobwhite quails (8d) >5200ppm
8) Fish: LC50 (96h) for rainbow trout and common carp >100mg/L
9) Daphnia: LC50 (48h) 87mg/L
10) Algae: LC50 (72h) for Scenedesmus subspicatus 47.1; LC50 (5d) for Selenastrum
capricornutum 21.7mg/L
11) Bees: oral LD50 (48h) >117 (Lig/bee; contact LD50 (48h)>200ig/bee
12) Worms: LC50 (14d) for Eisenia foetlda 1098mg/kg soil
Function
a) Control of aphids and whitefly in vegetables, potatoes, ornamentals, cotton,
deciduousand citrus fruit, tobacco, hops; both juvenile and adult stages are
susceptible.Also for control of plant hoppers in rice.
b) 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.
Formulations
98% TC ,25%WP, 25%WDG, 50%WDG