Sulphur is a bright yellow naturally occurring element with the symbol S and atomic number 16 Its a versatile and essential material used in various industrial applications due to its reactive and unique properties Primary Characteristics Appearance Bright yellow crystalline solid in its elemental form Odor Typically odorless but when burned it produces a characteristic rotten egg smell due to the formation of sulphur dioxide Solubility Insoluble in water but soluble in carbon disulphide and other nonpolar solvents Melting Point 11521C 23938F Forms Grades Sulphur can be found in various forms and grades including Elemental Sulphur Typically extracted from natural gas and oil Agricultural Sulphur Finegrade sulphur used in agriculture to adjust soil pH Pharmaceutical Grade Ultrapure sulphur for medical applications Applications Chemical Industry Key ingredient in the manufacture of sulphuric acid the most widely produced industrial chemical Agriculture Used as a soil conditioner and as a component in certain fertilizers Pharmaceuticals An ingredient in some skin treatments particularly for conditions like acne and dandruff Rubber Industry Used in vulcanization a process that hardens rubber Pulp Paper Industry Used in the Kraft process to break down wood components Advantages Essential for Life An important element for all living cells playing a crucial role in the functionality of vitamins enzymes and amino acids Industrial Utility Forms the backbone of numerous chemical reactions and processes Environmental Role Used in flue gas desulphurization to reduce sulphur emissions from power plants Note When procuring or using sulphur its essential to specify the desired grade or form to ensure suitability for the intended application