Sulphuric Acid

—A compound of hydrogen, sulphur and oxygen. The most important and widely used chemical in commerce, and its manufacture is one of the greatest of chemical industries. It is a colorle oily liquid, fuming slightly in air. It is very poisonous and corrosive. Ib forms the basis of manufacture of nearly all the other acids and salts, chemical manures and fertilizers, and is used largely in metallurgy, in the manufacture of certain apers, cellulose, explosives, coal tar colors and dyes, in tanning, refining and the preparation of various sulphates. In electric practice, sulphuric acid solutions are used as electrolytes in many primary cells and universally in storage batteries, and in electroplating, acid is used as a mixture fuming sulphuric with nitric acid for