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Updated: June 21, 2025
=Chloride of Barium= occurs crystallized in irregular plates, like magnesium sulphate, soluble in water and bitter in taste. =Carbonate of Barium= is found in shops as a fine powder, tasteless and colourless, insoluble in water, but effervescing with dilute acids, and readily decomposed by the free acids of the stomach. =Nitrate of Barium= occurs in octahedral crystals, soluble in water.
The salts of barium are also cardiac poisons. Post-Mortem Appearances. As of irritants generally. Stomach may be perforated. Treatment. Wash out stomach with a solution of sodium or magnesium sulphate, or of alum, and give stimulants by the mouth and hypodermically. =Iodine= occurs in scales of a dark bluish-black colour.
The results exceeded the dreams of the most visionary. At the very outset, in 1860, it was shown that such common terrestrial substances as sodium, iron, calcium, magnesium, nickel, barium, copper, and zinc exist in the form of glowing vapors in the sun, and very soon the stars gave up a corresponding secret.
It is the indicator most generally employed for the titration of organic acids. In general, it may be stated that when a strong acid, such as hydrochloric, sulphuric or nitric acid, is titrated against a strong base, such as sodium hydroxide, potassium hydroxide, or barium hydroxide, any of these indicators may be used, since very little hydrolysis ensues.
From the acid solution, hydrogen sulphide precipitates copper, lead, and mercury, dark; arsenic, antimony, and tin, yellowish. If no precipitate, add ammonia and ammonium sulphide, iron, black, zinc, white, chromium, green, manganese, pink. The residue of the material after digestion with hydrochloric acid and potassium chlorate may have to be examined for silver, lead, and barium.
Each of the two atoms of sulphur will form upon oxidation a molecule of sulphuric acid or a sulphate, which, in turn, will require a molecule of the barium chloride for precipitation. To determine the quantity of the barium chloride required, it is necessary to include in its molecular weight the water of crystallization, since this is inseparable from the chloride when it is weighed.
They seemed favorable at first, and great things were expected of them; but late examinations made on the Wabash Railroad, on the New York, Pennsylvania, and Ohio, and on the Cleveland and Pittsburg Railroad, have shown the ties to be decaying, and the results to be unfavorable. This applies to the sulphate of copper and barium process. Mr.
For example, in the qualitative detection of sulphates by precipitation as barium sulphate from acid solution it is not necessary, in most instances, to take into account the solubility of the sulphate in hydrochloric acid, while in the quantitative determination of sulphates by this reaction this solubility becomes an important consideration.
Thilmany has patented still another combination, in which he uses sulphate of zinc and chloride of barium, which has been noticed under the head of burnettizing. Experiment No. 17 was tried on the Hudson River Railroad.
Certain salts for example, the sulphates of zinc and of calcium, barium platino-cyanide, tungstate of calcium, and the double sulphate of uranyle and potassium are more active than glass, and even emit the rays after exposure to ordinary light, if not also in the dark.
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