Name of index PFS-S PFS-L Appearance Light yellow powder solid Reddish-brown viscous liquid Basicity, % 9.0~14.0 9.0~14.0 Total iron content, %  ...
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Name of index index High-Class First-Class Conforming Na5P3O10%≥ 96 90 85 P2O5 %≥ 57.0 56.5 55.0 Water insoluble%≤ 0.10 0.10 0 ...
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