TETHMP was prepared by one-step synthes is of triethylene tetramine,formaldehyde and phosphorus trichloride.The yield was about 80%.

• 以三乙烯四胺、甲醛、三氯化磷为原料,经一步反应合成三乙烯四胺六甲叉膦酸,产品收率约80%25。