... phosphate as a fire-prevention agent for fabric timber and paper as water softening agent for boiler food additive Chemical Name: Trisodium Phosphate ... .Generally are anhydrous and 12 H2O products.The chemical formula for 12 H2O products is 4(Na3PO4, Na3PO4·12H2O )-NaOH ... , timber, and paper, also as water softening agent for boiler, food additive, buffering agent ,solder, tanning agent, etc.Packing: ...