MSMA Content: 890g/l, 720g/l CAS: 2163-80-6 Formula: CH4AsNaO3 Application: It is pro-emergence ,contact ,selective herbicides.It is used to control gramineous weeds. 2.24g mixed with water 150l ,then use in the cotton fields. Also can be used non-crop areas at 0.55-1kg/100l