... 68.0% min. Inactive phosphate, as P2O5 7.5% max. PH of 1% water solution 5.8-7.3 Solubility Qualified ... 68.0% min. Inactive phosphate, as P2O5 7.5% max. PH of 1% water solution 5.8-6.5 Solubility Qualified ... , as Fe 0.05% maxUsage: Mainly used as additive agent,PH adjusting agent, fermenting agent,and nourishment, etc.Packing: 25kg PP woven ...