Why chlorine is most widely used disinfectant?

Chlorine kills pathogens such as bacteria and viruses by breaking the chemical bonds in their molecules. Disinfectants that are used for this purpose consist of chlorine compounds which can exchange atoms with other compounds, such as enzymes in bacteria and other cells.
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Is chlorine The most common disinfectant?

Chlorine remains the most widely used chemical for water disinfection in the United States 2.
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What are the advantages of chlorine as disinfectant?

The benefits of chlorination are:
  • Proven reduction of most bacteria and viruses in water.
  • Residual protection against recontamination.
  • Ease-of-use and acceptability.
  • Proven reduction of diarrheal disease incidence.
  • Scalability and low cost.
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Is chlorine the best disinfectant?

Chlorine is a highly effective method of disinfection. However, while in the pipes it produces small amounts of chemicals (called “disinfection by-products”) if the source water has higher levels of dirt or germs that may react with chlorine. Chlorine is also used up quickly in water systems.
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Why is chlorine the best?

Besides killing dangerous germs like bacteria, viruses and parasites, chlorine helps reduce disagreeable tastes and odors in water. Chlorine also helps eliminate slime bacteria, molds and algae that commonly grow in water supply reservoirs, on the walls of water mains and in storage tanks.
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Water disinfection with chlorine



What is chlorine used for?

Its most important use is as a bleach in the manufacture of paper and cloth, but it is also used to make pesticides (insect killers), rubber, and solvents. Chlorine is used in drinking water and swimming pool water to kill harmful bacteria.
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Why is chlorine used as a bleaching agent?

The degrading agents, which include oxygen, ozone, and the chlorine-containing compounds such as hypochlorite, are used primarily for bleaching chemical pulps and act by destroying the phenolic groups and the carbon–carbon double bonds.
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Is chlorine an antiseptic or disinfectant?

Description of Chlorine Use as a Disinfectant

Chlorine solutions (Cl2, NaOCL, Ca[OCl]2, ClO) have been used extensively as disinfectants and antiseptics since the 1800s11.
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Is chlorine a cleaning agent?

Chlorine has a variety of uses. It is used to disinfect water and is part of the sanitation process for sewage and industrial waste. During the production of paper and cloth, chlorine is used as a bleaching agent. It is also used in cleaning products, including household bleach which is chlorine dissolved in water.
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Is chlorine harmful to human health?

Is chlorinated water safe to drink? Yes. The U.S. Environmental Protection Agency (EPA) limits the amount of chlorine in drinking water to levels that are safe for human consumption. The levels of chlorine used for drinking water disinfection are unlikely to cause long-term health effects.
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How effective is chlorine?

Chlorine effectively kills a large variety of microbial waterborne pathogens, including those that can cause typhoid fever, dysentery, cholera and Legionnaires' disease. Chlorine is widely credited with virtually eliminating outbreaks of waterborne disease in the United States and other developed countries.
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Why is chlorine safe in water?

Many public water systems add chlorine (a process known as "chlorination") to their water supply for the purpose of disinfection. Disinfection kills or inactivates harmful microorganisms which can cause illnesses such as typhoid, cholera, hepatitis and giardiasis.
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What are some fun facts about chlorine?

Fun Chlorine Facts
  • Chlorine rarely occurs freely in nature. ...
  • Chlorine is the third most abundant element in the Earth's oceans.
  • Chlorine is the 21st most abundant element in the Earth's crust.
  • Chlorine is the ninth most abundant element in the human body.
  • Chlorine gas is has a yellow-green color and a strong smell.
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What is chlorine disinfection?

Chlorine disinfection is reliable and effective against a wide spectrum of pathogenic organisms. When chlorine gas and hypochlorite salts are added to water, hydrolysis and ionization take place to form hypochlorous acid (HOCI) and hypochlorite ions (OCI) also referred to as free available chlorine.
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What is chlorination short answer?

Chlorination is the process of adding chlorine to drinking water to disinfect it and kill germs. Different processes can be used to achieve safe levels of chlorine in drinking water. Chlorine is available as compressed elemental gas, sodium hypochlorite solution (NaOCl) or solid calcium hypochlorite (Ca(OCl)2.
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Why is chlorine used in the manufacture of pesticides and germicides?

Because it is so highly reactive, chlorine is one of the most effective germicides available. Chlorine chemicals kill bacteria, algae, fungi , and protozoans and inactivate viruses.
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What is the strength of chlorine to disinfect hands?

Place at hand washing stations. Use mild (0.05%) chlorine solution to wash ungloved hands.
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Is chlorine a good hand sanitizer?

Chlorine is both an inexpensive and effective disinfectant if it is used properly. Improper use of chlorine could lead to incomplete sanitization or contamination of produce with excess chlorine.
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What is the strongest disinfectant?

Sterilants and high-level disinfectants
  1. 1 Formaldehyde. ...
  2. 2 Glutaraldehyde. ...
  3. 3 Ortho-phthalaldehyde. ...
  4. 4 Hydrogen peroxide. ...
  5. 5 Peracetic acid. ...
  6. 6 Hydrogen peroxide/peracetic acid combination.
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What are 5 uses for chlorine?

5Uses. Chlorine is commonly used as an antiseptic and is used to make drinking water safe and to treat swimming pools. Large amounts of chlorine are used in many industrial processes, such as in the production of paper products, plastics, dyes, textiles, medicines, antiseptics, insecticides, solvents and paints.
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Is bleach and chlorine the same?

Chlorine is a natural element and an ingredient of bleach, while bleach is a solution and the product of combining chlorine and other chemicals. 2. Chlorine exists in nature, while bleach is a manufactured product.
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Which bleaching agent is best?

Hydrogen peroxide is one of the most common bleaching agents. It is the primary bleaching agent in the textile industry, and is also used in pulp, paper, and home laundry applications.
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What is the best bleaching agent?

Hydroquinone. Hydroquinone is an effective skin lightening agent. The recommended concentration over the counter is 2%, but up to 4% is available from a dermatologist in some countries.
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What makes chlorine unique?

Appearance and Characteristics

Chlorine is a toxic gas that irritates the skin, the eyes and the respiratory system. Characteristics: Chlorine is a greenish-yellow, diatomic, dense gas with a sharp smell (the smell of bleach). It is not found free in nature as it combines readily with nearly all other elements.
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What is chlorine also known as?

Chlorine is in group 17 of periodic table, also called the halogens, and is not found as the element in nature - only as a compound. The most common of these being salt, or sodium chloride, and the potassium compounds sylvite (or potassium chloride) and carnallite (potassium magnesium chloride hexahydrate).
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