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Trichloroethylene was first prepared in 1864; its commercial manufacture, begun
in Europe in 1908 and in the U.S. in 1925, is based on the reaction of 1,1,2,2-
tetrachloroethane (see tetrachloroethane) with dilute caustic alkali. The pure ...
Because crimp encourages fibres to cling together, even loosely twisted yarns
are strong, and both crimp and resilience allow manufacture of open-structured
yarns and fabrics that trap and retain heat-insulating air. The low density of wool
The facility with which zinc chloride dissolves oxides to form oxychlorides is
utilized in the manufacture of cements and in the preparation of fillings in
dentistry. A solution of zinc oxide in zinc chloride dissolves silk and hence is
employed for ...
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This is the 198215th Edition, in two halves, with the Macropaedia and the Micropaedia. First published in 1768, the publisher is the oldest English-language encyclopedia still in print. Two Scottish ... Read full review