Sulcotrione

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Chemical Identification | General Product Information | Physical & Safety Data

Chemical Identification

Common Name

Sulcotrione

中文通用名

磺草酮

IUPAC

2-(2-chloro-4-mesylbenzoyl)cyclohexane-1,3-dione

CAS

2-[2-chloro-4-(methylsulfonyl)benzoyl]-1,3-cyclohexanedione

CAS No.

99105-77-8

Molecular Formula

C₁₄H₁₃ClO₅S

Molecular Structure

General Product Information

Category

Herbicides > Benzoylcyclohexanedione herbicides

Activity

Herbicide

Sulcotrione is primarily a systemic, post-emergence herbicide. However, it also has some residual soil activity, remaining in the top layer of the soil to be activated by rainfall. Grass weeds are best controlled with early post-emergence applications. Plant death occurs within ten days of treatment. The product has shown no cross-resistance to atrazine-resistant species. Sulcotrione may be used for pre-emergence applications in flax. No visible injury or negative effects on yield have been noted.

Sulcotrione is selective to maize and sugar cane.

CropUse

CropUses:
maize, sugar canes, flax

Maize: 300-450 g ai/ha

Flax: 600 g ai/ha

Premix

Premix Parters: propanil; pyrazosulfuron-ethyl;

Type	AI concⁿ
Suspension concentrate (SC)	30% (w/v)

Physical & Safety Data

Physical Properties

Molecular weight:328.8; Physical form:White solid; (tech. is a light tan solid). Composition:Tech. material is 90% pure. Melting point:139 °C; (tech., 131-139 °C); Vapour pressure:5 × 10-3 mPa (25 °C); Henry constant:9.96 × 10-6 Pa m3 mol-1 ( calc.); Partition coefficient(n-octanol and water):logP <0 (unspecified pH); pKa:3.13 (23 °C); Solubility:In water 165 mg/l (25 °C). Soluble in acetone and chlorobenzene.; Stability:Stable in water, with or without exposure to sunlight. Thermostable up to 80 °C.;

Toxicology

Oral:Acute oral LD₅₀ for rats >5000 mg/kg. Percutaneous:Acute percutaneous LD₅₀ for rabbits >4000 mg/kg. Low rate of absorption through the skin; non-irritating to skin; mild eye irritant (rabbits). Strong skin sensitiser (guinea pigs). Inhalation: LC₅₀ (4 h) >1.6 mg/l.

Environmental Profile

Ecotoxicology:?
Algae:EC₅₀ (96 h) for Selenastrum capricornutum 1.2 mg/l.Bees:Low toxicity to bees, both by topical and oral application; LD₅₀ >200 μg/bee.Birds:Dietary LC₅₀ for bobwhite quail and mallard ducks >5620 mg/ kg.Daphnia: LC₅₀ (48 h) >200 mg/l.Fish: LC₅₀ (96 h) for rainbow trout 227, mirror carp 240 mg/l.Worms: LC₅₀ (14 d) >1000 mg/kg soil.?

Environmental fate:?
Animals:Rapidly excreted in the urine, the major metabolite being 4-hydroxysulcotrione.Soil:Rapidly degraded in soil; lab. DT₅₀ 15-74 d; field DT₅₀ 1-11 d. The major metabolite is 2-chloro-4-methylsulfonylbenzoic acid.K_oc 44 (high pH, sandy clay lPlant:Deactivated by the formation of 2-chloro-4-methylsulfonylbenzoic acid.

Mallard duck	LD₅₀ >1,350 mg/kg Bobwhite quail LD₅₀ >2,250 mg/kg
Mirror carp _{[96 hrs]}	LC₅₀ 240 mg/litre Daphnia _{[48 hrs]} LC₅₀ 100 mg/litre
Rainbow trout _{[96 hrs]}	LC₅₀ 227 mg/litre Bee _[contact] LD₅₀ >200mg/bee