... as Ca, Ba, Mg, Cu and Fe Application: 1. Technical grade: Used in such industries as oil ... water softening agent in solution for printing, dyeing, and boiler, as diffusant in papermaking; Retarding agent, floating ... medium, high temperature agglomerant, detergent and soil analytical chemical reagent; 2. Food grade: Mainly used as additive agent, ... 0039Water insoluble %≤0.050.06 68% industrial grade shmp