Acetyl chloride is a colorless liquid with a sharp, pungent odor. It is an organic compound with the chemical formula C2H3ClO and is commonly used in the production of various chemicals, including acetylated compounds and pharmaceuticals. Acetyl chloride is highly reactive, particularly with water, and can produce acetic acid upon hydrolysis. This compound is typically produced by reacting acetic acid with thionyl chloride or phosphorus pentachloride. Due to its reactivity, acetyl chloride is handled with care in laboratory and industrial settings. It is important to use appropriate safety measures, as it can cause burns and respiratory irritation.