Product Name
Sodium Tripolyphosphate
Quality Indicators
Whiteness /% ≥
90 Superior
85 Grade I
80 Grade II
phosphorus pentoxide (P2O5)/% ≥
57.0 Superior
56.5 Grade I
55.0 Grade II
Sodium Tripolyphosphate (Na5P3O10)/% ≥
96 Superior
90 Grade I
85 Grade II
Water insoluble matter/% ≤
0.10 Superior
0.10 Grade I
0.15 Grade II
Iron (Fe)/% ≤
0.007 Superior
0.015 Grade I
0.030 Grade II
pH value (1% solution)
9.2-10.0
Granularity
Passes 1.00mm test, sieving rate is higher than 95%
90 Superior
85 Grade I
80 Grade II
phosphorus pentoxide (P2O5)/% ≥
57.0 Superior
56.5 Grade I
55.0 Grade II
Sodium Tripolyphosphate (Na5P3O10)/% ≥
96 Superior
90 Grade I
85 Grade II
Water insoluble matter/% ≤
0.10 Superior
0.10 Grade I
0.15 Grade II
Iron (Fe)/% ≤
0.007 Superior
0.015 Grade I
0.030 Grade II
pH value (1% solution)
9.2-10.0
Granularity
Passes 1.00mm test, sieving rate is higher than 95%
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