Thenylchlor

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Chemical Identification | General Product Information | Physical & Safety Data

Chemical Identification

Common Name

Thenylchlor

中文通用名

噻吩草胺

IUPAC

2-chloro-N-(3-methoxy-2-thenyl)-2′,6′-dimethylacetanilide

CAS

2-chloro-N-(2,6-dimethylphenyl)-N-[(3-methoxy-2-thienyl)methyl]acetamide

CAS No.

96491-05-3

Molecular Formula

C₁₆H₁₈ClNO₂S

Molecular Structure

General Product Information

Category

Herbicides > Anilide herbicides
Herbicides > Amide herbicides

Activity

Herbicide

Thenylchlor is suitable for pre-emergence or early post-emergence application to paddy fields and upland crops. It has residual activity lasting up to 30 days in cool conditions; in warm conditions this time is reduced. In paddy rice, optimum activity is achieved when the paddy water is at a depth of 3 cm. In trials, thenylchlor did not damage rice crops at up to three times the normal field rate. It has also shown good selectivity to legumes, spinach, cotton and sunflowers following pre-emergence treatment.

In field trials, the compound showed activity equal or greater than pretilachlor, at lower dose rates.

CropUse

CropUses:
rice

Rice	200-270 g ai/ha

Premix

Emulsifiable concentrate, wettable powder, granule. Premix Parters: azoxystrobin fludioxonil metalaxyl-M; lambda-cyhalothrin; difenoconazole; difenoconazole fludioxonil metalaxyl-M; fludioxonil; fludioxonil metalaxyl-M; metalaxyl-M;

Type	AI concⁿ
Granule (GR)	0.9% (w/w)
Suspension concentrate (SC)	4% (w/v)

Physical & Safety Data

Physical Properties

Molecular weight:323.8; Physical form:White solid with a slight, sulfurous odour. Density:1.19 (25 °C); Composition:Tech. is ×95% pure. Melting point:72-74 °C; Flash point:224 °C; Vapour pressure:2.8 × 10-2 mPa (25 °C); Partition coefficient(n-octanol and water):logP = 3.53 (25 °C); Solubility:In water 11 ppm (20 °C).; Stability:Decomposes at 260 °C. Decomposed by u.v. irradiation (400 nm, 8 h). Stable to acid and base in range pH 3-8.;

Toxicology

Oral:Acute oral LD₅₀ for rats and mice >5000 mg/kg. Percutaneous:Acute percutaneous LD₅₀ for rats >2000 mg/kg. Inhalation:LC₅₀ (4 h) for rats >5.67 mg/l. Phytotoxicity:No crop (rice) injury after post-planting treatment.

Environmental Profile

Ecotoxicology:?
Bees: LD₅₀ (96 h) >100 μg/bee.Birds: LD₅₀ for bobwhite quail >2000 mg/ kg.Daphnia: LC₅₀ (3 h) >100 ppm.Fish: TLm (48 h) for carp 0.76 ppm.Worms:LD₅₀ (14 d) for earthworms >1000 ppm.?

Environmental fate:?
Soil: K_oc 480-2846.