... -21 11 Fineness (mesh) 60~80 60~80 Application: Used in industries of oil fields, paper-making, textile, dyeing, petroleum, ... . as water softener, flotation selecting agent, disperser and high temperature adhesive; In food industry it used as an additive, nourishing agent, quality ... improver, pH regulator, metal ions chelating agent, adhesive and leavening agent etc.