... taking off the reaction of ammonia, which was boric acid.(3)Hydrochloric acid. Boron concentrate sour salt solution, and then by ... filtration, crystallization and drying, was boric acid. 2.. IndexItemSpecificationApperanceWhite powderBoric Acid (H3BO3),%99.6 minInsoluble matter in water,%0 ... with a roof, should not be colored with the wet mixing of raw materials goods and piling, vehicles must ...