... as water softening agent for boiler food additive Chemical Name: Trisodium Phosphate;Formula: Na3PO4, Na3PO4ยท12H2OMolecular ... are anhydrous and 12 H2O products.The chemical formula for 12 H2O products is 4(Na3PO4, Na3PO4 ... 7USES: Used as a fire-prevention agent for fabric, timber, and paper, also as ... water softening agent for boiler, food additive, buffering agent ,solder, ...