Metazachlor

Action/Use:

Herbicide

Use: Preemergence, early postemergence control of annual grasses, broadleaf weeds and yellow nutgrass suppression in potatoes, oilseed/rape, soybeans, tobacco, transplanted cabbage, leeks, celery, chives, sugarcane, turnips.

Identification

Common Name(s): Metazachlor (BSI, ISOE); ; Metazachlore (ISOF)

Chemistry

Properties: Beige solid. Melting point 85 C. Solubility: (Tech at 20 C) acetone >43.5g/kg; ether 6.3g/100g.

Mode of Action / Resistance Management

Chemical Group: Chloroacetamide

Mode of Action: Inhibition of VLCFAs (Inhibition of cell divison)

Action Group: HRAC Group K3; WSSA Group 15

Environmental Guidelines

Water Solubility: 430 mg/l at 20� C

Degradation/metabolism: Half-life of 1-23 days (laboratory soils); 3-9 days (field soils); 4-5 weeks (water/sediment). Lysimeter studies clearly show that metazachlor does not leach

Hazards: Fish: LC₅₀ 4 mg/l (96 h) (trout). Bird: Oral LD₅₀ >2000 mg/kg b.w. (bobwhite quail). Bee: Nontoxic

Safety Guidelines

Signal Word: CAUTION

Toxicity Class: III

Toxicity: (Rat): Oral LD₅₀ 2150 mg/kg. Dermal: LD₅₀ >6810 mg/kg

Handling/storage Cautions: Avoid contact with skin, eyes, clothing. Store at ambient temperatures in dry, well-ventilated, secure area out of reach of children and animals

Spill Control/cleanup: Large liquid spillage should be dammed-off and pumped into containers; soak up remainder with absorbent material and dispose of in accordance with local regulations. Solid (metazachlor) spillage should be picked up with an industrial vacuum cleaner and disposed of in accordance with local regulations

Product/waste Disposal: Dispose of by special means (e.g. suitable incineration), in accordance with local regulations

Protective Clothing: Long-sleeved shirt and long pants. Chemical-resistant gloves. Chemical-resistant footwear plus socks. Protective eyewear.

Suppliers and Branded Products

Basic Producers:

Agro-Care Chemical Industry Group Limited

BASF Corporation (Butisan* S)

Eastsun Chemical Co., Ltd.

Jiangsu Xinyi Pesticide Ltd.

Kingtai Chemicals Co., Ltd.

Makhteshim Agan Group (Brother*, Fuego*, Metazanex*, Sultan*)

Shanghai MIO Chemical Co., Ltd. (MIO* Metazachlor)

Sunking Chemical Industrial Co., Ltd.