icon.article.dark Article (N)IR Spectrometrie Preparation of Propargyl Chloride and its Application in Electroplating Propargyl chloride (CAS number 624-65-7), also known as 3-chloro-1-propyne, is an organic compound with the chemical formula C3H3Cl. It is a colorless liquid that is widely used in various industrial applications. In terms of safety, propargyl chloride is a highly Lees meer icon.arrow--dark