Lead tetroxide, commonly known as "red lead," is a bright red-orange powder used as a pigment and in the manufacturing of lead-acid batteries. The correct spelling of lead tetroxide is [lɛd ˌtɛtrəˈɑksaɪd]. The first syllable 'le' is pronounced as 'led' (rhymes with 'red') and the word 'tetroxide' is pronounced as 'tet-ra-oxide.' The IPA phonetic transcription helps in understanding the correct pronunciation of this chemical compound, ensuring clear communication in scientific and industrial contexts.
Lead tetroxide, also commonly referred to as red lead or minium, is an inorganic compound with the chemical formula Pb3O4. It is a bright red or orange crystalline powder that is widely used in various applications due to its unique properties.
At the molecular level, lead tetroxide consists of a lattice structure composed of lead cations (Pb2+) and oxide anions (O2-). It is created by oxidizing metallic lead or lead(II) oxide with nitric acid. The resulting compound has a high concentration of lead(IV) oxide, known for its powerful oxidizing properties.
Lead tetroxide finds applications in different industries, such as in the production of lead-acid batteries, ceramic glazes, and paints. In batteries, it serves as an active material on the positive electrode, promoting the flow of electricity during discharge. It is also employed as a colorant in various types of glass and ceramics, providing a vibrant red or orange hue.
However, it is important to note that lead tetroxide is classified as a toxic substance due to the presence of lead, which can be harmful to human health and the environment. As a result, its use and handling should be carefully regulated and managed in accordance with local health and safety guidelines to minimize the risk of lead poisoning and contamination.
In summary, lead tetroxide is an inorganic compound with a bright red or orange color and various applications in batteries, ceramics, and paints. It possesses oxidizing properties but carries health risks associated with lead exposure.
The word "lead tetroxide" has a straightforward etymology that can be understood by breaking it down into its constituent parts:
1. Lead: The term "lead" originated from the Old English word "lēad". It is derived from the Latin word "plumbum", which initially referred to the metal itself but also came to represent lead compounds.
2. Tetroxide: The term "tetroxide" derives from the combining form "tetra-" indicating "four" and "oxide", which refers to a compound containing oxygen. In this context, "tetroxide" denotes an oxide compound containing four oxygen atoms.
When combined, "lead tetroxide" refers to the compound formed by lead and four oxygen atoms.