Antimony is an element that has been used by humans for thousands of years. Historically, it was used to color metal alloys, such as pewter, and to produce antimony glass, which has a unique yellow color. Today, antimony is primarily used in flame-retardant materials, such as plastics and textiles. It is also used in batteries, semiconductors, and as an alloying agent in various metals, including lead and aluminum. Antimony has unique properties that make it an important element in a variety of applications. However, it is also considered a toxic element and exposure to high levels can be hazardous to human health.