... 97% 3.Capacity:8000MT per year 4.Used as water softener of boiler, flame retardant of Sodium Hydrogen Phosphate ... 28352200Appearance:White crystal;Density: 1.52; Easy weathered; Dissolved in water; Undissolved in ethanol. SpecificationIndexIndustrial gradeContent, %≥97.0P2O5, % ≥19 ... 05Water-insoluble, %≤0.10Usages: It can be used as water softener of boiler, flame retardant of fabrics, wood and paper ...