sulfur
Sulfur or sulfur, and the sulfur is one of the chemical elements. The symbol is S and the atomic number is 16. It is a non-metallic element with no taste or smell. In its natural state, it is present in the form of pure sulfur, or sulfide or sulfate. Essential for life, it contains sulfur in both kinds of amino acids. It is the main component of fertilizer, and it is also used for gunpowder, match, insecticide, disinfectant. Calcium sulfate, barium sulfate, lead sulfate, sulfuric acid silver, etc., which are produced through sedimentation reaction, are white sediments and stable in acid. Thus, when detecting sulfate ions, such sediments are useful. In addition, using sulphide ions, black iron sulphide, copper sulphide, lead sulphide and yellow cadmium sulphide precipitate can be used to confirm that iron ions, copper ions, lead ions or cadmium ions are contained in the solution.