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2. Elemental chlorine free - Wikipedia

   en.wikipedia.org/wiki/Elemental_chlorine_free

   Elemental chlorine free (ECF) is a technique that uses chlorine dioxide for the bleaching of wood pulp. It does not use elemental chlorine gas during the bleaching process and prevents the formation of dioxins and dioxin-like compounds , carcinogens .

3. Paper chemicals - Wikipedia

   en.wikipedia.org/wiki/Paper_chemicals

   Elemental chlorine bleaching uses chlorine and hypochlorite. Elemental chlorine-free bleaching is more environmentally friendly since it eliminates the use of hypochlorite and replaces chlorine with chlorine dioxide or sodium chlorate. [3] Totally chlorine-free bleaching utilizes oxygen and hydrogen peroxide. This is the most environmentally ...

4. Bleaching of wood pulp - Wikipedia

   en.wikipedia.org/wiki/Bleaching_of_wood_pulp

   As a result, from the 1990s onwards, the use of elemental chlorine in the delignification process was substantially reduced and replaced with ECF (elemental chlorine free) and TCF (totally chlorine free) bleaching processes. In 2005, elemental chlorine was used in 19–20% of kraft pulp production globally, down from over 90% in 1990. 75% of ...

5. Bleach - Wikipedia

   en.wikipedia.org/wiki/Bleach

   The grade of chlorine-based bleaches is often expressed as percent active chlorine. One gram of 100% active chlorine bleach has the same bleaching power as one gram of elemental chlorine. The most common chlorine-based bleaches are: Sodium hypochlorite (NaClO), usually as a 3–6% solution in water, usually called "liquid bleach" or just "bleach".

6. Iron(III) chloride - Wikipedia

   en.wikipedia.org/wiki/Iron(III)_chloride

   In industry, iron(III) chloride is used as a catalyst for the reaction of ethylene with chlorine, forming ethylene dichloride (1,2-dichloroethane): [43] H 2 C=CH 2 + Cl 2 → ClCH 2 CH 2 Cl Ethylene dichloride is a commodity chemical , which is mainly used for the industrial production of vinyl chloride , the monomer for making PVC .

7. Teeth whitening: What is it, how to do it safely and how to ...

   www.aol.com/lifestyle/teeth-whitening-100042380.html

   Whitening trays with gel. Bleaching trays, also called whitening trays, are made from a pliable material that molds to your teeth. Some products come preloaded with bleaching gel, while others ...

8. Many baby diapers contain chlorine dioxide. Should ... - AOL

   www.aol.com/lifestyle/many-baby-diapers-contain...

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9. Chlorine-releasing compounds - Wikipedia

   en.wikipedia.org/wiki/Chlorine-releasing_compounds

   Chlorine-releasing compounds, also known as chlorine base compounds, is jargon to describe certain chlorine-containing substances that are used as disinfectants and bleaches. They include the following chemicals: sodium hypochlorite (active agent in bleach ), chloramine , halazone , and sodium dichloroisocyanurate . [ 2 ]