Appearance: white powder Relative density: 2.484 (20°C) Solubility: easily soluble in water, but not in organic solution Absorbent to dampness and turn sticky when absorbed dampness in air Can form soluble chelate with metallic ions such as Ca, Ba, Mg, Cu and Fe Usage: Technical grade: used in such industries as oil field, paper-making, textile, dyeing, petrochemical/tanning/metallurgical/building material industry and used as water softening agent in solution for printing, dyeing and boiler as diffusant in papermaking, retarding agent, floating agent, dispersing medium, high temperature agglomerant, detergent and soil analytical chemical reagent Food grade: used as additive agent, pH adjusting agent, fermenting agent and nourishment