See All ProductsMetribuzin

Action

Herbicide

Use

A selective preemergence and postemergence herbicide to control a large number of grass and broadleaf weeds on soybeans, potatoes, barley, wheat, asparagus, sugarcane, tomatoes, peas, and lentils.

Formulation

Liquid suspension, water dispersible granules, dry flowable.

Identification

Common Names

Metribuzin (BSI, ISO-E, ISO-F, ISO, WSSA); Métribuzine (ISO-F, ISO)

Exp. Code Numbers

BAY DIC 1468 (Bayer); BAY 94337 (Bayer)

CAS Code

21087-64-9

Other Code Numbers

EINECS 244-209-7; SHA 101101

Chemistry

Compositions

4-amino-6-tert-butyl-4,5-dihydro-3-methylthio-1,2,4-triazin-5-one or 4-amino-6-tert-butyl-3-methylthio-1,2,4-triazin-5(4H)-one (IUPAC); 4-amino-6-(1,1-dimethylethyl)-3-(methylthio)-1,2,4-triazin-5(4H)-one (CAS)

Class

Triazinone.

Properties

White crystalline solid. Melting point 126.2°C. Vapor pressure 5.8 x 10-7 hPa at 20°C. Soluble in methanol, ethanol and glycol ether acetate.

Molecular Formula

C8H14N4OS

Mode of Action / Resistance Management

Chemical Group

triazinone

Mode of Action

inhibition of photosynthesis at photosystem II

Action Group

HRAC Group C1; WSSA Group 5

Environmental Guidelines

Water Solubility

1220 ppm

Safety Guidelines

Signal Word

CAUTION

Toxicity Class

III

Toxicity

(Rat): Oral LD50 4000 mg/kg

Handling/Storage Caution

Stable if kept dry and stored under moderate temperatures to 15°F