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 Shanxian concentrated hydrochloric acid, such as AgNO3 solution, concentrated nitric acid; ② plus a plastic bag sealed Shan County of concentrated hydrochloric acid, such as NH4HCO3 like. ⑶ anti-bonding. Glassware containing more in SiO2, alkali Shan County of concentrated hydrochloric acid can react with the product sticky. 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 Shan County of concentrated hydrochloric acid, KMnO4 solution, bromine, chlorine, etc; ② hydrofluoric acid can be reacted with a glass of SiO2, it can not save hydrofluoric glassware, use a plastic container or Lead 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, 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. How to safely use hydrochloric acid: chemically people to hydrochloric acid and sulfuric acid, nitric acid, hydrobromic acid, perchloric acid, collectively known as the six inorganic acids. Irritating odor. Because of concentrated hydrochloric acid is volatile, volatile hydrogen chloride gas and air role in the formation of hydrochloric acid in water vapor droplets, you will see the mist. Then operation of hydrochloric acid in life should pay attention to? Closed operation, pay attention to ventilation. Operating as mechanization and automation. The operator must go through specialized training, strict adherence to rules. Proposed operators wear self-absorption filter respirators (full cover), wear rubber acid suit, wearing rubber gloves acid. Away from flammable and combustible materials. To prevent vapor leakage into the workplace air. Avoid contact with alkalis, amines, alkali metals. When moving to light light unloading, prevent damage to packaging and containers. Equipped with spill response equipment. Empty containers may be harmful residues. Concentrated hydrochloric acid, hydrochloric acid Shan County, Zhengzhou Longda Chemical (Views) provided by the Zhengzhou Longda Chemical Products Co., Zhengzhou Longda Chemical Products Co., Ltd. (www.longdahuagong.com/) is specialized in "sodium hydroxide (caustic soda, liquid, flake, solid), sodium hypochlorite, hydrochloric acid, sulfuric acid, nitric" of the enterprise, the company adhering to the "integrity management, hard service "concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: Manager Xu.