The difference between fresh chlorinated water and long standing chlorinated water is as follows:
Newly prepared chlorinated water, also known as fresh chlorinated water, is a solution that has just been prepared and contains a large amount of hypochlorous acid and chlorine ions. Freshly made chlorinated water has strong oxidizing properties, mainly due to the large amount of hypochlorous acid contained in it, which has strong oxidizing properties and can kill microorganisms such as bacteria and viruses. In addition, freshly made chlorinated water contains small amounts of hydrogen and chloride ions, which can be used to adjust the pH of the solution.
Long-standing chlorine water, also known as old chlorine water, is chlorine water that has been sitting for some time. The hypochlorous acid in old chlorine water will gradually decompose and turn into normal chloride, so its oxidizing property will gradually weaken. In addition, the content of hydrogen ions and chlorine ions in the old chlorine water will be relatively high, so it is more acidic.
In chemical reactions, fresh chlorine water can be used to oxidize certain organic substances, while aged chlorine water is mainly used for bleaching and disinfection. Fresh chlorinated water is often used in industry and laboratories to oxidize certain chemicals, such as oxidizing alcohols to aldehydes. Long-standing chlorinated water, on the other hand, is mainly used for bleaching and disinfecting pulp because of its strong acidity.
There are obvious differences in the nature and composition of fresh and aged chlorinated water. Fresh chlorine water has strong oxidizing properties and can be used to sterilize and disinfect and oxidize organic matter, while aged chlorine water is mainly used for bleaching and disinfection.
The main application of new chlorine water:
1, disinfection: hypochlorous acid in the new chlorine water has strong oxidizing property, which can kill bacteria, viruses and other microorganisms, so it is often used in the disinfection of tap water. In swimming pools, public **** baths and other places, the new chlorine water is also widely used to disinfect the pool water to keep the water clean and hygienic.
2, sterilization: new chlorine water can be used to kill bacteria and viruses, so there is a wide range of applications in the disinfection and sterilization of medical equipment, surgical appliances, food processing equipment and other surfaces.
3, bleaching: new chlorine water can be used for pulp bleaching and disinfection. In the paper industry, the new chlorine water is added to the pulp, can destroy the chemical structure of cellulose, make it softer, but also can play the role of disinfection and bleaching.
4, oxidation of organic matter: new chlorine water can be used to oxidize certain organic substances, such as alcohols oxidized to aldehydes. In the chemical industry, the new chlorine water is widely used in the synthesis and preparation of certain chemical substances.