磷酸三钠（以NA3PO4 .12H2O计）含量，% ≥98.598.095.0硫酸盐（以SＯ42计）含量，% ≤0.500.500.80氯化物（以CI计）含量，% ≤0.300.400.50水不溶物含量，% ≤0.050.100.30甲基橙碱度（以Na2O计）16.5-19.016.0-19.015.5-19.0铁（Fe）含量，% ≤0.010.010.01砷（As）含量，% ≤0.0050.0050.0磷酸三钠（以NA3PO4 .12H2O计）含量，% ≥98.598.095.0硫酸盐（以SＯ42计）含量，% ≤0.500.500.80氯化物（以CI计）含量，% ≤0.300.400.50水不溶物含量，% ≤0.050.100.30甲基橙碱度（以Na2O计）16.5-19.016.0-19.015.5-19.0铁（Fe）含量，% ≤0.010.010.01砷（As）含量，% ≤0.0050.0050.0