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Javelle water
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Javelle water
The Columbia Encyclopedia, Sixth Edition
Javelle water or Javel water , Fr. eau de Javelle, aqueous solution of sodium or potassium hypochlorite. It was originally made near the French town of Javelle (now part of Paris) and was the first chemical bleach, a use first demonstrated by C. L. Berthollet in 1785. It was produced by passing chlorine gas through a water solution of potash ( potassium carbonate ). After the invention of bleaching powder Javelle water was sometimes produced by reacting the bleaching powder with potash or soda ash ( sodium carbonate ). Now usually sodium hypochlorite solution, it is used in bleaching and as a disinfectant.
Author not available, JAVELLE WATER.,
The Columbia Encyclopedia, Sixth Edition 2008
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The Columbia Encyclopedia, Sixth Edition. Copyright 2008 Columbia University Press
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65 years ago. (Wrinkle in Time).
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bleaching powder
...lime, Ca(OH) 2 , with chlorine gas, Cl 2 . It is used as a strong bleaching agent, as a disinfectant, and in making Javelle water . Bleaching powder was first produced in 1799 by Charles Tennant in Glasgow, Scotland. Author not available, BLEACHING...
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potassium
...air. It reacts violently with water to form potassium hydroxide...2 O 7 , and the iodide, KI. Javelle water contains potassium hypochlorite...silicate, K 2 SiO 3 , is used in water glass . Potassium has several...compound used in tanning, in water purification, and in baking...
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Bleach
...a new product called "Eau de Javelle." The bleaching powder consisted...slaked lime (lime treated with water) was spread thinly over the...researchers found that injecting salt water with electrical current broke...heating coils that can raise the water temperature to the boiling point...
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bleaching
...must first be scoured and silk must be degummed. Common bleaching agents used domestically are Javelle water, which is sodium hypochlorite in water, and other chlorine-based mixtures. Author not available, BLEACHING. , The Columbia Encyclopedia...
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