SUSPENSION CONCENTRATE OF A HERBICIDE COMPOSITION

摘要

The invention relates to chemical means for combating weeds, specifically to aqueously suspended herbicide compositions based on pyrimidine derivatives, for example sodium 2,6-bis-(4,6-dimethoxypyrimidin-2-yl)hydroxybenzoate, which can be used for treating rice crops. The invention is directed towards producing a novel suspension concentrate of a herbicide composition based on pyrimidine derivatives, said composition having high physico-chemical and operational properties, in particular low surface tension and wetting contact angle values and reduced corrosive activity in relation to structural materials. The above-mentioned technical result is achieved in that the suspension concentrate of the herbicide composition comprises a combination of two agro-chemically active components 2,6-bis-(4,6-dimethoxypyrimidin-2-yl)hydroxybenzoic acid and sodium 2,6-bis-(4,6-dimethoxypyrimidin-2-yl)hydroxybenzoate with carbamide, wherein the molar ratio of carbamide to active substance is 0.93-1.79. The suspension concentrate of the herbicide composition comprises a complex salt with carbamide in the presence of hydroxyethyldiphosphonic acid and/or a disodium salt of ethylenediaminetetraacetic acid and at least one of the agro-chemically active components. The surface tension is 32 N/m∙10, the wetting contact angle: initial - 54°, final - 30°, the corrosion rate of carbon steel - 0.00152 g/m∙hour, and the permeability of the carbon steel - 0.0011 mm/year.