REVIEW OF INORGANIC CHEMISTRY

Jas. Lewis Howe
1907 Journal of the American Chemical Society  
variety and were identified as Siren. Gigas. The damage consisted of small holes through the bottom of a new sulphuric acid chamber. It was proposed to coat the timbers before covering with lead, with a thick mixture of gas-tar and creosote oil.-Conroy, (Ibid., I O I I ) , reviews the chemical trade of England as compared with that of Germany. The conclusions arrived at, are that as regards general chemicals and medicines, England's position is satisfactory, and that she holds her own as to
more » ... s her own as to volume of trade. But there appears evidence of a lag behind the times ; the trade in fine chemicals, organic and inorganic and synthetic alkaloids. perfumes, etc., is not adequately represented in England. Many tables of imports and exports of Germany and the United Kingdom, are given. Thorne and Jeffers, (Aizalyst., 31, IOI), have devised a method for purifying zinc from arsenic. The zinc is fused and treated n.ith sodium,-about I gram per pound of zinc. The mixture is well mixed by pouring from one crucible into another, and then heated to just aboye the melting point of zinc, with exclusion of air, at first, and later with the crucible open. A crust forms, which is broken through and the metal poured off and heated considerably above its melting point, and after sliimming. it is granulated. BLrsenic can be removed from hydrochloric acid by the use of a copper-tin couple. --Eaxter, (Eng. Pat. 5,209, (190;))~ proposes to impregnate wood, textile fabrics, paper or other material, with a solutio? containing ammonium phosphate and boric acid, to render them less conibustible and more resistent to water. - REVIEW OF INORGANIC CHEMISTRY. In this review the order of the Periodic System will be followed. Material which has already been treated in the Review of Ainerican Chemicat Research in this Ioztrnal will be omitted, as well as most of the phenomena of radioactivity. Group I . A new determination of the boiling points of the metals of the alkalies has been made by Ruff and Johannsen (Bey., 38, 3601), not less than 25 grams of each metal being boiled in a wrought iron retort, and the temperature measured by a platinum-platinum-rhodium thermoelement. Experiment showed that at the temperatures used, the metals did not attack the iron vessels. The results were: cesium, 670"; rubidiuni, 696" ; potassium, 757.5" ; sodium, 877.5". Lithium did not volatilize at the temperature at which the retort melted, so that its boiling point is at least above 1400". No simple mathematical formula could be found to express the boiling points as a function of the atomic weight. The lithium used in the experiments was prepared by the electrolysis of a mixture of lithium and potassium chlorides, but the same authors find (2. Elektrochem., 12, 186) a better electrolyte in a mixture of lithium bromide with 10-15 per cent. lithium chloride. In a graphite retort with a thick iron wire as kathode and a current of 100 amperes at IO volts the output is 80 per cent. of the theoretical. The metal obtained contained only a trace of sodium as impurity, and fused at 180'. It has been found by Hofniann and Hiendimaier (Ber., 39, 3184) that the burning of potassium to K,O, is a powerful oxidizing agency. Most
doi:10.1021/ja01957a020 fatcat:3c6j6gbwbrffvo243hhtqgr7pa