Carbosulfan

TC & FORMULATION: 90%TC, 5%GR, 200G/L EC,35% ZGF

Structure Formula:

NOMENCLATURE

Common name carbosulfan (BSI, ANSI, draft E-ISO, (m) draft F-ISO)

IUPAC name 2,3-dihydro-2,2-dimethylbenzofuran-7-yl (dibutylaminothio)methylcarbamate 

Chemical Abstracts name 2,3-dihydro-2,2-dimethyl-7-benzofuranyl [(dibutylamino)thio]methylcarbamate 

CAS RN [55285-14-8]  EEC no. 259-565-9 

PHYSICAL CHEMISTRY

Mol. wt. 380.6  M.f. C20H32N2O3S  Form Orange to brown clear, viscous liquid.  M.p. No clearly defined m.p.  B.p. Thermally unstable when vacuum distilled (65 mmHg).  V.p. 3.58 ´ 10-2 mPa (25 °C)  KOW logP = 5.4  Henry 4.66 ´ 10-3 Pa m3 mol-1 (calc.)  S.g./density 1.054 (20 ºC)  Solubility In water 3 ppm (25 ºC). Miscible with most organic solvents, e.g. xylene, hexane, chloroform, dichloromethane, methanol, ethanol, acetone, etc.  Stability Hydrolysed in aqueous media; DT50 0.2 h (pH 5), 11.4 h (pH 7), 173.3 h (pH 9).  F.p. 40 ºC (closed cup) 

APPLICATIONS

Biochemistry Cholinesterase inhibitor; activity is due to in vivo cleavage of the N-S bond, resulting in conversion to carbofuran.  Mode of action Systemic insecticide with contact and stomach action.  Uses Control of a wide range of soil-dwelling and foliar insect pests. Examples of uses include control of millipedes, springtails, symphylids, wireworms, pygmy mangold beetles, frit flies, white grubs, aphids, caterpillars, flea beetles, Colorado beetles, stem borers, leafhoppers, planthoppers, codling moth, scales and free-living nematodes. The product is used in a wide range of crops, e.g. cotton, sugar beet, potatoes, rice, top fruit, citrus, maize, vegetables, sugar cane and coffee. Formulation types CS; DP; EC; GR; UL; WP.  Compatibility Compatible with liquid fertilizers.

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