Dicamba CAS 1918-00-9, also known as Baicaodi, is a low toxicity herbicide with the chemical formula C8H6Cl2O3. The pure product is a white crystal. Melting point 114~116 ℃. The vapor pressure is 4.5 MPa (25 ℃). The solubility in water at 25 ℃ is 6.5 g/L, which is easily soluble in ethanol and acetone. The acute oral LD50 of rats is 2900 mg/kg. Formulations include aqueous formulations of dimethylamine salts, granules of acids or amine salts. Conductive post sprout herbicide. 2,5-dichlorophenol is generated by alkaline hydrolysis of 1,2,4-trichlorobenzene, which reacts with carbon dioxide to produce 3,6-dichloro-2-hydroxybenzoic acid, which is then methylated with dimethyl sulfate. Used for the control of broad-leaved weeds, woody shrubs, etc. in gramineae crops. The dosage is 80-130 g/ha.

Chinese name: Dicamba

Foreign name: 3,6-dichloro-O-anisic acid plant cell * culture tes; Dicamba; 2,5-Dichroro-6-methoxybenzoic acid; 2-Methody-3,6-dichlorobenzoid acid

Nickname: 3,6-dichloro-2-methoxybenzoic acid; Baicao Enemy; dicamba

Chemical formula: C8H6Cl2O3

Molecular weight: 221.04

CAS login number: 1918-00-9

EINECS login number: 217-635-6

Melting point: 114~116 ℃

Water solubility: 50 g/100 mL

Density: 1.57 g/cm ³

Appearance: White crystal

Application: Significant effect on single season and multi season broad-leaved weeds in crops such as wheat and corn

Application area

Benzoic acid herbicides (benzoic acids).

It has an internal absorption and conduction effect, and has a significant control effect on annual and perennial broad-leaved weeds. Used for the prevention and control of gramineous crops such as wheat, corn, millet, rice, etc., such as pig plague, buckwheat vines, quinoa, cowweed, big nest vegetable, sown lettuce, xanthium, Boshuo grass, field convolvulus, prickly ash, quercetin, carp intestines, etc. After seedling spray, the medicine is absorbed by the stems, leaves and roots of weeds, and transmitted up and down through phloem and xylem, which blocks the normal activity of plant hormones, thus killing them. Generally, 48% water solution is used with a concentration of 3-4.5mL/100m2 (active ingredient 1.44-2g/100m2). Due to the narrow herbicide spectrum of Dicambar, it has poor efficacy in certain resistance hybrids. It is less safe for wheat and is often mixed with 2,4-dibutyl ester or 2-methyl-4-chloramine salt.

Used as a herbicide after plant germination, it is often mixed with one or more phenoxycarboxylic acid herbicides or other herbicides to form a mixture. It is used for weeding grain fields and has a significant effect on one season and multi season broad-leaved weeds in crops such as wheat and corn.

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