... days 4. fineness of grind:10-100mesh sodium hexametaphosphateWe are one of the biggest phosphate Manufacture ... , paper production, textile, dyeing, petroleum, chemistry, metallurgy and construction materials etc. as water softener, flotation selecting agent, ... it used as an additive, nourishing agent, quality improver, pH regulator, metal ions chelating agent, adhesive and leavening agent etc. ...