... into meta-boric acid Application1)It is chemical used for making ceramics, glazes, cements, wicks, food preservatives, ... special glasses;2)Also for leather dressing compounds for preparation of hides prior to tanning; 3) ... flux in metallurgical industry, fire-proofing compositions and linings for safes; 5)Also for pigments; Enamel paints, paper glazes, cosmetics, soaps ...