Tetracosane is primarily used in the field of material science as a phase change material (PCM) for thermal energy storage. It is effective in storing and releasing large amounts of energy during its phase transition, making it valuable in applications like temperature regulation in buildings, solar energy systems, and electronic devices. Additionally, it serves as a standard in gas chromatography for calibrating instruments and analyzing complex mixtures. In research, tetracosane is utilized to study the properties of long-chain hydrocarbons and their behavior in various chemical processes. Its stability and predictable melting point also make it a useful component in the development of waxes and coatings.