Ethyl Isothiocyanate, identified by CAS number 542-85-8, is a chemical compound whose properties are central to its wide-ranging applications in synthesis and research. Physically, it presents as a clear, colorless to slightly yellow liquid with a distinctively pungent, mustard-like aroma. Understanding its chemical reactivity is key for its effective utilization. As a representative of the isothiocyanate class, it exhibits electrophilic character at the carbon atom of the -N=C=S group, making it susceptible to nucleophilic attack. This fundamental reactivity pattern underpins its utility as a building block in organic chemistry.

Key physical properties of Ethyl Isothiocyanate include a boiling point typically around 130-132°C and a density of approximately 0.995 g/mL at 25°C. While it is soluble in common organic solvents like ethanol and ether, its behavior with water is notable – it reacts with water, highlighting the importance of proper storage and handling to maintain its chemical integrity. Its flash point, around 31-32°C, classifies it as a flammable liquid, demanding precautions against ignition sources. These characteristics are vital for anyone looking to buy or use this chemical for synthesis purposes.

The reactivity of Ethyl Isothiocyanate makes it a valuable intermediate. It readily undergoes addition reactions with amines to form thioureas, with alcohols to form thiocarbamates, and with thiols to form dithiocarbamates. These transformations are fundamental in the synthesis of pharmaceuticals, agrochemicals, and various specialty chemicals. For those seeking to buy Ethyl Isothiocyanate, understanding these reactions ensures that the compound can be effectively integrated into sophisticated synthesis strategies. Its role as a reactive synthon makes it a consistent choice for advanced chemical manufacturing.