This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1898 edition. Excerpt: ...it acts as a powerful poison, except in very small doses. The best antidote is raw white of egg. Mcrcurous Bromide, HgaBra, maybe prepared by adding hydrobromic acid or sodium bromide to solution of mercurous nitrate; in this form it bears a close resemblance to calomel. Mercuric Bromide, HgBra, is obtained by ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1898 edition. Excerpt: ...it acts as a powerful poison, except in very small doses. The best antidote is raw white of egg. Mcrcurous Bromide, HgaBra, maybe prepared by adding hydrobromic acid or sodium bromide to solution of mercurous nitrate; in this form it bears a close resemblance to calomel. Mercuric Bromide, HgBra, is obtained by treating mercury under water with an excess of bromine; it crystallizes from water in glistening scales, and from alcohol in rhombic needles. It is not so soluble in water as the chloride, but is easily soluble in alcohol and in ether. Mercurous Iodide, Hgala. Hydrargyri lodidum Flavum, U. S. P.--This form of mercurous iodide has replaced the green variety which was official in the earlier Pharmacopoeias, and which was prepared by rubbing in a mortar 40 parts of mercury with 2 to 3 parts of alcohol and 25.5 parts of iodine added in small portions at a time. The present official process which yields the yellow iodide consists in precipitating a solution of mercurous nitrate with one of potassium iodide: Hga(N03)a ] 2KI = Hgala + 2KN03. The precipitate is directed to be washed with alcohol to remove the last traces of mercuric salt, and to be kept in dark amber-colored vials, with the least possible exposure to light. Properties.--The official salt is " a bright yellow, amorphous powder, odorless and tasteless. By exposure to light it becomes darker, in proportion as it undergoes decomposition into metallic mercury and mercuric iodide." The green mercurous iodide owes its color to the admixture with it of metallic mercury and, perhaps, some mercuric iodide. Mercurous iodide is nearly insoluble in water, and entirely insoluble in alcohol or ether. On the careful application of heat to 290 the salt melts to a black liquid, and then sublimes in...
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