Yokar Chemical Limited

General product information

LAMBDA-CYHALOTHIRN 95% TC, 50G/LT EC, 25G/LT EC
NOMENCLATURE
Common name: Lambda-cyhalothrin
Other name: lambda-cyhalothrin (BSI, draft E-ISO); lambda-cyhalothrine ((f) draft F-ISO)
Iupac name: A reaction product comprising equal quantities of (S)-α-cyano-3- phenoxybenzyl (Z)-(1R, 3R)-3-(2-chloro-3,
Type: Insecticide for Public Hygiene
CAS RN: [91465-08-6]
PHYSICAL CHEMISTRY
M.F: C23H19ClF3NO3
Mol.wt.: 449.9
Style/Appearance: Composition:: Tech. grade is c. 81% pure.
M.p.: 49.2℃; (tech., 47.5-48.5℃)
B.p.: Does not boil at atmospheric pressure
V.p.: 2 10-4 mPa (20℃, est.); 2 10-1 mPa (60℃, interpolated)
F.p.: 185℃ (tech.,Pensky-Martens closed cup)
S.g./density: 1.33 g/ml (25℃)
Solubility: In water 0.005 mg/l (20℃). In acetone, methanol, toluene, hexane, ethyl acetate 500 g/l.
Stability: Stable to light. Stable on storage for more than 6 months at 15-25℃.
Henry: 2 10-2 Pa m3 mol-1
KowlogP: 7 (20℃)
Pka: 9 (hydrolysis prevents measurement)
APPLICATION
Formulation type(s): CS; EC; ED; EW; UL; WG: WP
Biochemistry: Non-systemic insecticide with contact and
Uses: Control of a wide spectrum of insect pests, e.g. aphids, Colorado beetles, thrips,
MAMALIAN TOXICOLOGY
Oral: Acute oral LD50 for male rats 79, female rats 56, mice 20 mg/kg.
Skin & Eye: Acute percutaneous LD50 for rats 632-696 mg/kg. Mild eye irritant;
Inhalation: LC50 (4 h) 0.06 mg/l air (total : (1 y) for dogs 0.5 mg/kg daily.
ADI: 0.005 mg/kg.
Toxicity class: WHO (a.i.) II; EPA (formulation) II (Karate, Warrior)
EC hazard: T; R26 T; R25 Xn; R21 N: R50, R53
ENVIRONMENTAL FATE
Plants: For details of metabolism of lambda-cyhalothrin in cotton and soya bean leaves, see D. A.
Animals: In rats, following oral administration, rapidly eliminated in urine and faeces.
Soil / environment: Rapidly degraded in soil; DT50 for microbial degradation 23-82 d, for field soil 6-40 d.
Analysis: Product analysis of pyrethroids reviewed by E. Papadopoulou Mourkidou in Comp. Analyt.