Acetylene (CAS 74-86-2, C2H2), is a colorless gas, widely used in welding and cutting metals, with a distinctive odor. It is highly flammable and can form explosive mixtures with air. Acetylene plays a crucial role in various industries such as metal fabrication, automotive, and construction. Its high temperature flame makes it ideal for welding and brazing applications. Additionally, acetylene is used in the production of various organic compounds and as a fuel for portable lighting and heating equipment.