... woven bag, 50kg or 25kg net each Properties and uses: white powder, mainly used as synthetic detergent, water-softening agent, dispersant ... classSecond classNa5P3O10, ≥969085P2O5, % ≥57.056.555.0Water insoluble, % ≤0.100.100.15Iron (Fe), % ≤0.0070.0150.030pH (10g/l solution)9.2 ...