This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1914 edition. Excerpt: ... to accomplish the bleaching. It can be obtained from chloride of lime, Ca02Cl2, by the addition of dilute acid. A process for obtaining chlorine by the electrolysis of sea water (brine) is rapidly coming into use. Javelle water is also used as a source of chlorine. It is prepared by treating chloride ...
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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1914 edition. Excerpt: ... to accomplish the bleaching. It can be obtained from chloride of lime, Ca02Cl2, by the addition of dilute acid. A process for obtaining chlorine by the electrolysis of sea water (brine) is rapidly coming into use. Javelle water is also used as a source of chlorine. It is prepared by treating chloride of lime with sodium carbonate, NagC0g (washing soda), or potassium carbonate, in water solution. SUMMARY In Cleaning it is first necessary to remove oily or greasy matter that causes the dirt to adhere to the soiled article. Soaps are used because they are good solvents for grease and are themselves soluble in water. Soaps are made by boiling solutions of strong bases, usually sodium hydroxide, with fats or oils. The soap, which is the sodium or potassium salt of a fatty acid (stearic, palmitic, oleic), and glycerin result from the action. Toilet Soap should not contain any free base, nor more than 25 % of water. Laundry Soaps are made with the addition of rosin during the operation of boiling. This gives them strong lathering properties. Special Soaps and Cleaning Powders generally contain sodium carbonate, which makes them rather caustic in action. Borax, which is not so caustic as the sodium carbonate, is also used. Scouring Soaps are made from ordinary soap by the addition of a powdered abrasive such as pumice or quartz. Washing Soda, Ammonia Water, or Borax can be used where a stronger grease solvent is desired than that which can be obtained by the use of soaps. The Operation of Washing is dependent on the solvent action of the soap solution plus the mechanical action of moving currents of water. Bluing is used to neutralize the yellow tint which washing develops in white goods. Dyes, Prussian blue, or ultramarine are used. The...
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Add this copy of Chemistry of Common Things to cart. $66.43, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Newport Coast, CA, UNITED STATES, published 2010 by Nabu Press.
Add this copy of Chemistry of Common Things to cart. $71.19, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Newport Coast, CA, UNITED STATES, published 2015 by Palala Press.
