This industry comprises establishments primarily engaged in manufacturing basic inorganic chemicals (except industrial gases and synthetic dyes and pigments). Illustrative Examples: Alkalies manufacturing Aluminum compounds, not specified elsewhere by process, manufacturing Carbides (e.g., baron, calcium, silicon, tungsten) manufacturing Carbon black manufacturing Chlorine manufacturing Hydrochloric acid manufacturing Potassium inorganic compounds, not specified elsewhere by process, manufacturing Radioactive isotopes manufacturing Sulfides and sulfites manufacturing Sulfuric acid manufacturing Cross-References. Establishments primarily engaged in--