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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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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