... the reaction of ammonia, which was boric acid.(3)Hydrochloric acid. Boron concentrate sour salt solution, and then ... filtration, crystallization and drying, was boric acid. 2.. IndexItemSpecificationApperanceWhite powderBoric Acid (H3BO3),%99.6 minInsoluble matter in ... fastness.3)Pharmaceutical IndustryFor the production of boric acid ointment, disinfectant, astringent, antiseptic4)Boron steel used ...