磷酸三钠***级分析纯***级化学纯医药级项目指标指标指标含量%≥98≥97≥98澄清度试验合格合格——游离碱%≤1.5≤3≤3二钠盐%≤0.5≤1≤1氯化物（CL）%≤0.005≤0.005≤0.005***盐(SO4)%≤0.01≤0.03≤0.03氮化合物（N）%≤0.002≤0.005≤0.005铁(Fe)%≤0.0005≤0.002≤0.002***(As)%≤0.0003≤0.001≤0.0003***%≤0.001≤0.002≤0.001)