It is a green water treatment agent,with properties of -non-phosphor,non-nitrogen,non-pollution and fully biodegradation ... soluble polymer. It is a green water treatment agent, with properties of non-phosphor, non-nitrogen, non-pollution and fully biodegradation. ... organophosphines when used in situation of high hardness, high alkaline, high pH value and high concentration index. When built with PBTCA, ...