Industrial hydrochloric acid, hydrochloric acid English name alias hydrochloric acid, technical formula HCL Molecular Weight 36.46 Physical and chemical properties of pure hydrogen chloride is a colorless gas with a pungent odor. That is hydrochloric acid aqueous solution, colorless pure hydrochloric acid. Industrial mouth due to the presence of iron, chlorine and other impurities ammonia and concentrated hydrochloric acid, slightly yellowish. The relative density of 1.155 hydrogen chloride melting point -114.8 degrees Celsius. The boiling point of -84.9 degrees Celsius. Soluble in water, there is a strong corrosive and can corrode metal, animal and plant fiber and human skin have a corrosive effect. Concentrated hydrochloric acid fuming in the air, hitting a white male ammonia vapor cloud. Hydrogen chloride gas was harmful to plants and animals. Hydrochloric acid is a strong inorganic acid, and metal effects can generate and release chlorine metal chloride; salt and water with a metal oxide effect; neutralization with a base to form a salt and water together; and salts can play metathesis reaction to generate a new salt and a new acid. Purpose is to create ammonium chloride, calcium chloride, zinc chloride, copper chloride, basic aluminum chloride, ferric chloride liquid and other raw materials. Save dyestuff and pharmaceutical intermediates in the synthesis of concentrated hydrochloric acid for diazotization amino group, a nitro group into an amino group, converted to the sulfonic acid sodium salt. Also used in the synthesis of polyvinyl chloride, chloroprene rubber, ethyl chloride. Also for the hydrometallurgical (such as decomposition of tungsten ore production of tungsten acid, etc.), metal surface treatment (as copper pickling rust). In the printing industry, for fabric bleach pickling, mercerized after the like. In addition, for the regeneration of ion exchange resins, sugar and leather industry. According to the volatile hydrogen chloride is easy soluble in water features, and ferrous chloride in hydrochloric acid solution, the solubility of the law, the use of indirect steam heating, vacuum evaporation concentration process, the gas produced by the evaporation of the condenser is condensed into dilute hydrochloric acid return Inter washing using again; waste acid is concentrated by evaporation so that after reaching a certain concentration of ferric chloride, concentrated hydrochloric acid, concentrated liquid is cooled so that crystals in the form of ferrous chloride to precipitate, and then centrifuged to obtain ferrous chloride crystals. 1. The use of vacuum evaporation process hydrochloric acid pickle liquor, technically sound, economically viable, suitable for medium and small-scale iron and steel enterprises hydrochloric acid waste utilization. 2. Due to the reduced evaporation temperature vacuum evaporation, so extending the life of the equipment excellent pure concentrated hydrochloric acid, lower repair and maintenance costs of the equipment. 3. The energy consumption of less value hydrochloric acid regeneration recovery process may be set off against the cost, so that the processing system can continue to run. The small number of necessary equipment, low investment, and the operation is simple, it is suitable for use in hydrochloric acid pickling, cold-rolled strip of small businesses. Preparation of concentrated hydrochloric acid | Concentrated hydrochloric acid | Zhengzhou Longda Chemical provided by Zhengzhou Longda Chemical Products Limited. 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!