The quality of hydrochloric acid produced according to technological routes, contaminants and industrial applications

Hydrochloric acid (HCl), the object of this work, was chosen due to the fact that it has several industrial routes and its use, directly or indirectly, allows contamination in final products. The main industrial processes, the raw materials related to each process, the main contaminants and their consequences were highlighted. To prove some contaminations, experiments were carried out in order to demonstrate that contaminants present in hydrochloric acid can affect the quality and performance of a process where their participation is paramount. Finally, the objective of this work is to form a critical technical awareness to evaluate and use hydrochloric acid for purposes compatible with its industrial quality.