Bleach

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Bleach

Bleach— the technical mixture of the hypochlorite, chloride and hydroxide of calcium. Alternative name: bleaching powder lime. In common parlance: bleach.

Process the production of bleaching powder from chlorine and slaked lime invented in 1799 year Charles Tennant, a British chemist and entrepreneur.

Chlorine lime is a powdery product white in color, alkaline reaction, odour neutral chlorine, a mixture of various salts of calcium. The quality of bleach is determined init the contents of active chlorine (chlorine that is displaced by the action on bleach acids). Bleach contains 35-32-26% of active chlorine. When dissolved in water forms a suspension. The residue consists of insoluble salts Sassi CA(Oh)2.

The use of bleach:

• Dry substances bleach used for bleaching, the degasification, the disinfection of rooms and disinfection of excreta, toilets, sump pits, garbage cans. Note, however, that the dry substance has a disinfectant effect only on wet surface.

• For disinfection of any materials before disposal using 10 and 20% solutions.

• Bleached 10-20% solution is prepared in the following manner: 1-2 kg dry matter should be added a liter of water and mix well until smooth homogeneous state. Then, without stopping stirring, add the water to 10-liter volume. Next, the mixture is left for a day in a dark place to defend in a glass or enameled pot with a tight tube. Then pre-filtered, poured into similar dishes.

• A working solution. On the basis of the clarified solution, prior corresponding work, preparing a working composition the necessary concentration.

• Chlor-lime milk. It cooking similarly clarified 10-20% of the composition bleach, just liquid leave to defend, and use immediately.

For disinfection use:

· dry bleach;

· chlorine slurry, which is obtained by mixing 3 parts water and 1 part bleach lime;

· powder, which consists of talc and bleach in the ratio 1:2;

· special tablets for water disinfection;

· glinoizvestkovye milk (chlorine + water in the ratio 1:9).

Dry bleach is used for the treatment of cesspools and medical institutions, to disinfect liquid biological materials.

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