See All ProductsMCPA

Action

Herbicide

Use

Controls annual and perennial broadleaf weeds on peas, rice, small grains, sugarcane, grassland, pastures, tree crops, turf, and noncrop areas.

Formulation

Potassium, sodium, dimethylamine salts (water soluble concentrates); isooctyl, isobutylesters (emulsifiable concentrates).

Identification

Common Names

MCPA (ISO, BSI, WSSA, ISO-F); 2,4-MCPA (France); Metaxon (USSR)

Exp. Code Number

CN 380830110 (Ciech S.A. Agro-Sulphur Group)

CAS Code

94-74-6

Other Code Numbers

EINECS 202-360-6; SHA 030501

Chemistry

Compositions

4-chloro-o-tolyloxyacetic acid (IUPAC); 2-(4-chloro-2-methylphenoxy)acetic acid (CAS)

Class

Phenoxy herbicide.

Properties

White to light brown solid, flakes, crystal powder or liquid. Same as 2,4-D except for replacement of one chlorine atom by a methyl group. Melting point 114°-119°C. Vapor pressure 7.7 x 10-6 mbar. Non-corrosive. Solubility: At 20°-25°C. in ethanol 150 g/l; acetone >200 g/l.

Molecular Formula

C9H9ClO3

Mode of Action / Resistance Management

Chemical Group

phenoxy-carboxylic-acid

Mode of Action

action like indole acetic acid (synthetic auxins)

Action Group

HRAC Group O; WSSA Group 4

Environmental Guidelines

Hazard

Fish: LC50 117 mg/l (trout). Bird: LD50 377 mg/kg (bobwhite quail). Bee: Nontoxic

Water Solubility

825 ppm

Safety Guidelines

Signal Word

CAUTION

Toxicity Class

III

Toxicity

(Rat): Oral LD50 800 mg/kg; Inhalation LC50 >6.36 mg/l. (Mouse): Oral 550 mg/kg. (Rabbit): Dermal LD50 >4000 mg/kg

Handling/Storage Caution

Amine formulations are relatively stable, but esters depend on emulsifying system. Read each product label carefully.

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 spillage should be picked up with an industrial vacuum cleaner

Product/Waste Disposal

Dispose of by special means (suitable incineration, etc.) in accordance with local regulations

Protective Clothing

Protective eyewear.

Emergency Guidelines

Flashpoint

Nonflammable (TC). Esters may be solvent-based formulations that have flashpoints

First Aid

Get medical aid. Eyes: flush with plenty of water. Skin: wash affected area with plenty of soap and water, remove contaminated clothing. Inhalation: remove to fresh air. Ingestion: do NOT induce vomiting unless advised by a physician