无色四方晶体,无色结晶或白色颗粒状粉末。在空气中稳定,在400℃时失去水,变成偏磷酸盐。溶于约4.5份水,不溶于乙醇。pH4.4~4.7。相对密度2.238g/cm3。熔点257.6℃[1] 储存 密封保存 用途 配制缓冲液。测定锑、磷、铝和铁。..............................................................................................................................................................................................................................................................................................