化学性质 熔点:203-205°C 密度:1.48 原药为白色固体。m.p.203～205℃，蒸气压7.39×10Pa，相对密度1.48。25℃时，溶解度为：丙酮2.4g/kg，乙腈1.5g/kg，乙醇137mg/kg，乙醚32mg/kg，二甲苯37mg/kg，水8mg/L (pH=5)、70mg/L (pH=7)。分配系数0.31 (pH=7)。水悬浮液在pH=5时水解半衰期18d,pH=7～9稳定。土壤中半衰期约28d 用途 磺酰脲类除草剂，抑制支链氨基酸合成，从而抑制植株生长端的细胞分裂，阻止杂草生长至失绿坏死。本品为芽前、芽后灭生性除草剂，适用于林木防除一年生和多年生禾本科杂草及阔叶杂草，或开辟森林隔离带，伐木后林地清理，荒地垦前、休闲非耕地、道路边荒地除草灭灌，如羊茅、一枝黄花、黍、油莎草、阿拉伯高梁、豚草等。 用量为210～250g/h m，可常规喷洒，也可用飞机喷洒。不宜用于农田除草。 Common name sulfometuron-methyl CAS RN 74222-97-2] Uses Control of annual and perennial grasses (especially Sorghum halepense) and broad-leaved weeds in non-crop land. Also used for selective weed control in Bermuda grass and certain other turf grasses; and in forestry to control woody tree species in pine trees. Applied either pre- or post-emergence. Formulation types Sulfometuron-methyl 70%SP Sulfometuron-methyl 75%WDG
