Common?Name:

(S)-Metolachlor

Chemical?Name:?

2-ethyl-6-methyl-N-(1'-methyl-2'-methoxyethyl)-chloroacetylanilide

Pesticide?Category:?

Herbicide

CAS?No:?

51218-45-2

Molecular?Formula:?

C15H22ClNO2

Structural?Formula:?

?

?

??

Properties

Appearance:?Pure?metolachlor?is?light?yellow?oily?liquit

Flash?Point:?110-180°C

Vapour?Pressure:?0.0017?Pa

Stability:?Stable?in?water,?Easy?dissolves?in?alcohol,?dichloromethane,?benzene,?toluene?etc.?many?solvents.?Hardly?dissolves?in?ethylene?glycol,?petroleum.

Mode?of?Action:?

Selective?herbicide,?absorbed?predominantly?by?the?hypocotyls?and?shoots.?Inhibits?germination

Characteristics?and?Uses:?

?

Control of annual grasses and some broad-leaved

?weeds in maize, sorghum, cotton, sugar beet,

fodder beet, sugar cane, potatoes, peanuts,

soya beans, safflowers, sunflowers, various

?vegetables, fruit and nut trees, and woody ornamentals.??????

Toxicity:?

?

??MAMMALIAN?TOXICOLOGY Oral?Acute?oral?LD50?for?female?rats?1063,?male?rats?1936?mg/kg.?Skin?and?eye?Acute?percutaneous?LD50?for?rats?>5050?mg/kg.?Mild?skin?and?eye?irritant?(rabbits).?May?cause?skin?sensitisation?(guinea?pigs).?Inhalation?LC50?(4?h)?for?rats?>2.02?mg/l?air.?NOEL?(90?d)?for?rats?300?mg/kg?diet?(c.?15?mg/kg?daily),?for?mice?100?mg/kg?diet?(c.?100?mg/kg?daily),?for?dogs?300?mg/kg?diet?(c.?9.7?mg/kg?daily).?ADI?(EPA)?cRfD?0.10?mg/kg?b.w.?[1995].?Water?GV?0.01?mg/l?Toxicity?class?WHO?(a.i.)?III?EPA?(formulation)?III?EC?classification?(R43)?ECOTOXICOLOGYBirds?Acute?oral?LD50?for?mallard?ducks?and?bobwhite?quail?>2150?mg/kg.?Dietary?LC50?(8?d)?for?bobwhite?quail?and?mallard?ducks?>10?000?mg/kg.?Fish?LC50?(96?h)?for?rainbow?trout?3.9,?carp?4.9,?bluegill?sunfish?10?mg/l.?Daphnia?LC50?(48?