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A growth-regulating herbicide readily absorbed and translocated from either roots or foliage. Controls broadleaf weeds in asparagus, corn (field, silage, popcorn), grass seed crops, grain sorghum, noncropland, pastures, rangeland, reduced-tillage, fallow, small grains not underseeded to legumes, sugarcane, turf, between cropping; brush and vines in pasture, industrial areas, noncropland, rangeland; perennial broadleaf weeds with spot treatments and ropewick applications.


Soluble granules; water soluble liquid (potassium, dimethylamine salt, diglycolamine salt, sodium salt, isopropylamine salt); wettable granular (sodium salt).


Common Names

Dicamba (ANSI, ISO, BSI, WSSA); MDBA (JMAF); Dianat (USSR)

CAS Codes

1918-00-9 (dicamba); 10400-79-1 (dicamba diglycolamine); 2300-66-5 (dicamba dimethylamine); 1982-69-0 (dicamba sodium)

Other Code Numbers

EINECS 217-635-6; SHA 029801 (dicamba)



3,6-dichloro-2-methoxybenzoic acid; 3,6-dichloro-o-anisic acid; 2-(2-aminoethoxy)ethanol salt of 3,6-dichloro-o-anisic acid


Benzoic acid.


Melting point 114°-116°C. Soluble in ethanol, acetone, methyl ethyl ketone, and other ketones. Less readily in xylene.

Mode of Action / Resistance Management

Chemical Group

benzoic acid

Mode of Action

action like indole acetic acid (synthetic auxins)

Action Group

HRAC Group O; WSSA Group 4

Environmental Guidelines


Fish: LC50 >1000 mg/l (bluegill, rainbow trout).

Water Solubility

4,500 ppm

Safety Guidelines

Signal Word

Varies by formulation


(Rat): Oral LD50 1707 mg/kg. (Rabbit): Dermal LD50 >2000 mg/kg.

Handling/Storage Caution

Store above 15°F

Spill Control/Cleanup

Contain liquid spill with absorbent material, collect in a suitable waste container. Wash affected area with water and detergent. Keep wash water out of drains. Use product/absorbed material according to label instructions and quantities. Dispose of at an approved chemical waste facility

Protective Clothing

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

Emergency Guidelines

First Aid

Get medical aid. Eyes: flush with water for at least 15 minutes. Skin: wash with mild soap and water, rinse with copious amounts of water. Inhalation: remove to fresh air. Apply artificial respiration if necessary. Ingestion: drink 1-2 glasses of water and induce vomiting