... (a Cleaning Agent And Useful Industrial Chemicals For Glasses, Ceramics, Enamel, Metall For making ceramics, glazes, cements, wicks, ... food preservatives, special glasses; Also for leather dressing compounds for preparation of hides prior to tanning; ... metallurgical industry, fire-proofing compositions and linings for safes; Also for pigments; Enamel paints, paper glazes, cosmetics, ...