... soluble in water,but not on organic solution,absorbent to dampness,and furn sticken ... 0.05% max0.05% maxPH value(1% solution)5.8-7.35.8-6.5solubilityQualifiedQualifiedHeavy metals ... mainly used as a water softening agent in solution for printing, dyeing, and boiler; Diffusant in papermaking ... agglomerant, detergent and soil analytical chemistry reagent. For food grade, additive agent,PH adjusting agent ...