BS 4427-10-1976 工业用三磷酸钠(三磷酸五钠)和焦磷酸钠(焦磷酸四钠)的试验方法.氧化磷(V)总含量测定:磷钼酸喹啉重量法
This International Standard specifies a gravimetric method using quinoline phosphomolybdate for the determination of the total phosphorus(V) oxide content of sodium tripolyphosphate (pentasodium triphosphate) and sodium pyrophosphate (tetrasodium diphosphate) for industrial use.