Lithium and Its Compounds Lithium (from Greek: λίθος, translate. lithos, lit. ‘stone’) is a chemical element with the symbol Li and atomic number 3. It is a soft, silvery-white alkali metal. Under standard conditions, it is the lightest metal and the lightest solid element. Like all alkali metals, lithium is highly reactive and flammable and…

Caustic soda in tanning  Caustic soda in Leather Manufacturing: caustic soda is a highly reactive alkaliis widely used in various industries.Caustic soda has a faster and stronger reactivity than other alkali materials.The tannery or leather process makes the corrosive skin a stable,permanent, and flexible natural material for many applications.This natural material is called “leather”, which…

Classification of Chemicals Classification of chemicals: Dangerous goods are classified and labeled  in many countries according to the United Nations system.In this system, hazardous goods are categorized according to their hazardous properties in six classes These classes include nine distinct classes and a different class of materials The risks for each class are marked with…

Chemical pollutants Chemical pollutants are divided into organic and mineral groups.Organic compounds contain carbon and hydrogen. Some organic particles are found in the atmosphere more than other organic particles,These include phenols, organic acids, and alcohol.The most famous minerals in the atmosphere are nitrates, sulfates, and metals such as iron, lead, zinc, and vanadium. Sources of…

    A solvent is a chemical substance that dissolves another chemical substance and forms a solution in the form of a homogeneous mixture. The chemical solvent is the component in the solution that has the largest amount and determines the physicochemical form of the substance as solid, liquid or gas. In other words, the…