Novel s-triazines of the formula ##STR1## wherein R.sub.1 is selected from the group consisting of chlorine and methylthio, R.sub.2 is selected from the group consisting of mono- and dialkylamino with alkyls of 1 to 4 carbon atoms, R.sub.3 is selected from the group consisting of chlorine, methylthio, ethylthio and mono- and dialkylamino with alkyls of 1 to 4 carbon atoms and R.sub.4 is alkyl of 1 to 4 carbon atoms having herbicidal activity.
式子为##STR1##的新型S-三嗪类化合物,其中R.sub.1为
氯或甲
硫基,R.sub.2为1至4个碳原子的烷基单基或双基胺基,R.sub.3为
氯、甲
硫基、乙
硫基或1至4个碳原子的烷基单基或双基胺基,R.sub.4为具有除草活性的1至4个碳原子的烷基。