... PropertyIt is white powder, melting point is 622 , easily dissolve in water, alkalescence,noncorrosive,has remarkable to calcium ion and magnesian ion ... also be used inpetroleum, metallurgy, mining,paper making and water treatment. It main be used as assistant of washing product ... soap liquid. Also it is can be usedas the industrial water softener, tanning agent, dyeing assistant, the dispersant of ...