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, 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 excellent pure concentrated hydrochloric acid, 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 formulation of concentrated hydrochloric acid, and metal effects can generate and release chlorine metal chloride; salt and water with a metal oxide effect; salt and water from the reaction with a base; and salts can play metathesis The reaction generates 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. And pharmaceutical intermediates in the synthesis of dyes, for diazotization amino, nitro group into an amino group, converted to 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. How to save the laboratory should concentrated hydrochloric acid? Drugs save ⑴ oxidation. Many laboratories strong reducing substance easily react with oxygen in the air and deterioration. When you save: ① pay attention to seal or cover immediately after use, such as Na2SO3 solution, Na2S solution, potassium sulphate and phenol; ② adding a reducing agent to prevent oxidation, such as divalent iron was added iron; ③ cut off the air, such as active metals K, Ca, Na stored in kerosene, Li stored in paraffin oil, white phosphorus stored in water. ⑵ anti-decomposition. When you save a lot of visible light or heat labile substances: ① with a brown bottle in a cool place, such as AgNO3 solution, concentrated nitric acid; ② plus sealed plastic bags, such as NH4HCO3 like. ⑶ anti-bonding. Glassware containing more in SiO2, alkali can react with a viscous product. Therefore: ① preservation of a strong base such as KOH solution, when only NaOH solution instead of a glass with a rubber stopper; save ②Na2SiO3 also need such a solution. ⑷ anti-corrosion. ① Many strong oxidizing substances easily with rubber stopper containing unsaturated bond reactions, it is saved only with a glass stopper rather than using rubber stoppers. Such as the preservation of concentrated sulfuric acid, HNO3 solution, KMnO4 solution, bromine, chlorine, etc; ② hydrofluoric acid can be reacted with a glass of SiO2, it can not save glassware concentrated hydrochloric acid hydrofluoric acid, use plastic containers or leaden container preservation. ⑸ avoid volatilization. Of highly volatile substance save: ① sealed, in a cool place, such as concentrated hydrochloric acid, concentrated nitric acid, concentrated ammonia water; ② liquid seal preservation of concentrated hydrochloric acid, such as the preservation of liquid bromine, carbon disulfide and other water seal. ⑹ water solution. When laboratory save the hydrolysis of strong material: ① adding some agent to inhibit hydrolysis save liquid. FeCl3 solution such as dilute hydrochloric acid, Na2SiO3 was added a small amount of NaOH solution, AgNO3 solution, add nitric acid and the like; when you have to seal ② solid save or homemade nitrate Luo tincture sealing, such as AlCl3, P2O5 and so on. Concentrated hydrochloric acid formula, Zhengzhou Longda Chemical, concentrated hydrochloric acid is provided by Zhengzhou Longda Chemical Products Limited. Zhengzhou Longda Chemical Products Co., Ltd. (www.longdahuagong.com/) is a leader in Zhengzhou, Henan Province, chemical reagents, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Zhengzhou Longda Chemical leadership with the staff warmly welcome all inquiries negotiations to create the Zhengzhou Longda Chemical better future.