See All Products2,4-DB




For alfalfa, birdsfoot trefoil, alsike, ladino, red clover; postemergence for established alfalfa, peanuts, soybeans; for broadleaf weeds in alfalfa and cereal crops.


Common Name


Exp. Code Number

M&B 2878

CAS Code


Other Code Number

SHA 030801



4-(2,4-dichlorophenoxy)butyric acid (IUPAC)


White crystalline solid. Melting point 120°C. Very soluble in alcohol, acetone, ether. Slightly in benzene, toluene, kerosene.

Mode of Action / Resistance Management

Chemical Group


Mode of Action

action like indole acetic acid (synthetic auxins)

Action Group

HRAC Group O; WSSA Group 4

Environmental Guidelines


Fish: (salt/ester) LC50 4 mg/l (96 h) (rainbow trout). Bee: Nontoxic

Water Solubility

Practically insoluble

Safety Guidelines

Signal Word

Varies by formulation


(Rat): Oral LD50 >2000 mg/kg. (Rabbit): Dermal >10,000 mg/kg.

Handling/Storage Caution

Do not contaminate water, food, or feed by storage or disposal. Do not apply when weather conditions favor drift from targeted area. Do not freeze. If allowed to freeze, remix before using.

Spill Control/Cleanup

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 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 (suitable incineration, etc.) in accordance with local regulations

Protective Clothing

Chemical-resistant apron when cleaning equipment, mixing, or loading. Long-sleeved shirt and long pants. Approved respirator. Protective eyewear. Waterproof gloves. Shoes plus socks.

Emergency Guidelines

First Aid

Get medical aid. Eyes: flush immediately with continuous irrigation of flowing water for at least 30 minutes. If cornea burned, instill antibiotic steroid preparation frequently. Skin: promptly wash with plenty of soap and water for at least 15 minutes while removing contaminated clothing. Wash clothes before reuse. Inhalation: remove to fresh air. Ingestion: give large quantities of water, induce vomiting