How to safely use hydrochloric acid? First aid measures Skin contact: Immediately remove contaminated clothing, rinse for at least 15 minutes with plenty of water, can be applied weakly alkaline substance such as soap and so on. Medical treatment. Eye contact: immediately filed eyelid, with plenty of water or saline thoroughly washed at least 15 minutes. Medical treatment. Inhalation: rapidly from the scene to fresh air. Keep the airway open. Such as difficulty breathing concentrated hydrochloric acid, give oxygen. If breathing stops, artificial respiration immediately. Medical treatment. Ingestion: Rinse mouth, seek medical advice. Hydrochloric acid in metalworking applications such as concentrated hydrochloric acid density, steel parts of the pre-plating and washed first with caustic soda solution to remove the oil concentration of concentrated hydrochloric acid, and then soaked in hydrochloric acid; metal before welding, the need to weld coated with a little hydrochloric acid etc., it is the use of hydrochloric acid to dissolve metal oxides of this nature, to remove the rust. Thus, in order to get the metal plated prison, welding was in prison. Concentrated hydrochloric acid | concentrated hydrochloric acid | Zhengzhou Longda Chemical provided by Zhengzhou Longda Chemical Products Co., Ltd. Zhengzhou Longda Chemical Products Co., Ltd. (www.longdahuagong.com/) strong, credible, in Zhengzhou, Henan chemicals industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Zhengzhou Ronda chemicals and you hand into the brilliant, for a better future!