Molecular formula : C16H14CL2O4
MW : 341.19
density : the relative density of 1.3 (40 ° C)
melting point : 39 ~ 41 ° C
Boiling Point : 175 ~ 176 (13.3 Pa) ° C
vapor pressure : 34.4 µ Pa (20 ° C);
LD50 (mg / kg) : male rats acute import 580, 557 female rats; rats acute percutaneous than 5000. Right eye-stimulating effect on the skin to stimulate a minor role.
traits : pure colorless odorless solid.
dissolved : 22 ° C water solubility of 3 mg / liter. 20 ° C can be dissolved in acetone, ether, xylene and other organic solvents.
purposes : low toxicity of herbicides. Plants can be the root, stem, leaf absorption, a partial uptake, but poor conduction. Its main role is part of meristematic tissue, the growing by more medicine, the results can improve control. In wheat, barley, rye, soybeans, sugar beets, potatoes, flax, peanuts and other crops Tanaka control of wild oats, crabgrass, Yomiuri, A.aequalis and other Setaria. Except for cotton, dicotyledon general safety; Oats, corn, sorghum, sugar cane, rice fields unfit for use. Ethyl, the application period is very important, as the weeds growing period set to the opposition oat 2-4 leaf stage when treatment and prevention. Wheat Field with 36% of 34 EC 130 ~ 183ml; Soybean and sugar beet, control these weeds, weeds in the 2-4 leaf stage of application, with 36% of 34 EC 167 ~ 200ml, the amount of wheat acres than 200ml, it may be inhibited wheat. Ethyl, with Carbamate, urea, Nitriles very easy beet-ning, Metribuzin herbicide mixture, such as, but not with nitrogen, acid and eliminate such copy-song mix of herbicide, otherwise they will be lower efficacy. Grass Shi Ling, spacing seven to 10 days before the use of 2,4-D and other herbicides.
preparation or sources : (1) can be 4 - (2,4-dioxane phenoxy) Phenol and C Methyl chloride as raw materials in the system. (2) 100 ° C, nitrofen in the presence of ammonium chloride, used iron reduction, and the resultant sulfate, sodium nitrite reaction to be 2,4-Dichlorophenoxy phenol; In the phenol xylene, the presence of sodium hydroxide and 2-chloro acid condensation, and then for acidification, methyl, methanol esterification obtained. Acetic acid in 140 ° C, phosphorus trichloride presence, use chlorine for chlorination, is that 2-chloro propionate.
Note : due to the solvent-containing agent, from the mouth into the body, serving 200ml paraffin oil, and then served 30g activated carbon, and not to let patients vomiting, and attention to keep warm, were lying still and breathing fresh air. Prohibit the use of epinephrine in a category of medication.
packaging and transportation : loaded with iron barrel, weighing 10kg, preferably in a dry place storage, low temperature storage, it should be prior to the use of liquid medicine shaking.
categories : herbicide
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