Nitrosulphuric acid is a highly corrosive chemical compound often used in laboratories and industries for various purposes. Synonyms for this compound include nitrosulfuric acid, fuming nitric acid, and oleum. Nitrosulfuric acid is formed by mixing concentrated sulfuric acid with nitric acid, resulting in a potent mixture. It is commonly employed as a nitrating agent to introduce nitro groups into organic compounds, as well as a powerful oxidizing agent in certain chemical reactions. Due to its hazardous nature, utmost care must be taken when handling, storing, and disposing of nitrosulfuric acid, as it can cause severe burns, respiratory issues, and other health complications if not used properly.