The present invention relates to new dilute aqueous compositions of 2-chloro-5-[3,6dihydro-3-methyl-2,6-dioxo-4-(trifluoromethyl)-1-(2H)pyrimidinyl]-4-fluoro-N-[[methyl(1-methylethyl)amino]sulfonyl]benzamide, herein after also referred to with its common name "saflufenacil". The invention also relates to the use of the compositions for controlling undesired vegetation and to corresponding methods. The dilute aqueous compositions of the invention comprise the components: a) saflufenacil, i.e. 2-chloro-5-[3,6-dihydro-3-methyl-2,6-dioxo-4-(trifluoromethyl)-1- (2H)pyrimidinyl]-4-fluoro-N-[[methyl(1-methylethyl)amino]sulfonyl]benzamide as component a) b) at least one adjuvant as component b), where component b) comprises at least one compound b1) or b2) or a mixture of b1) and b2), wherein compound b1) is selected from compounds having at least one poly-C2-C4-alkylene ether group and where compound b2) is selected from the group consisting of C1-C4-alkyl esters of fatty acids, N-C1-C4 -alkyl-amides of fatty acids and N,N-di-C1-C4-alkylamides of fatty acids c) as component c) at least one inorganic salt selected from carbonates, hydrogencarbonates, phosphates, monohydrogenphosphates and dihydrogenphosphates of sodium or potassium and mixtures thereof d) water wherein the composition contains the inorganic salt in such an amount that the pH value of the composition, determined at 20°C, is in the range from above pH 5,5 to below pH 9, in particular in the range from above pH 6 to pH 8.5.La présente invention concerne de nouvelles compositions aqueuses diluées de 2-chloro-5-[3,6-dihydro-3-méthyl-2,6-dioxo-4-(trifluorométhyl)-1-(2H)pyrimidinyl]-4-fluoro-N-[[méthyl(1-méthyléthyl)amino]sulfonyl]benzamide, désigné également ci-après par son nom commun « saflufénacil ». Linvention concerne également lutilisation des compositions pour lutter contre la végétation indésirable et des procédés correspondants. Les compositions aqueuses diluées de linvention comprennent les composants s