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Of the three substances mentioned, the acid is by far the most Coach Factory Outlet interesting, forming as it does the starting-point of a new group of compounds, the Ralph lauren australia number and variety of which can scarcely be inferior to that of benzoic acid. It thus became desirable to prepare the acid on a larger scale. For this purpose it was not necessary to employ the nitrile or the amide in a state of perfect purity. The crude nitri le had simply to be boiled for some time with alcoholic soda, care being taken to condense the vapours, so as not to lose any nitrile by evaporation.
When ammonia was no longer evolved the alcohol was boiled off, and UGG boots online the alkaline liquid filtered after cooling, whereby small quantities of naphthylamine were separated. The brown liquid, when decomposed by hydrochloric acid, furnished an abundant curdy precipitate, consisting of the new acid. It was washed with cold water and recrystallized partly from boiling water (in which it is UGG boots clearance very sparingly soluble), partly from hot alcohol (by which it is copiously dissolved). Thus purified, the new acid presents itself in the form of white needles, which fuse at 160 C. Fused and resolidified, the new compound is heavier than water. When heated beyond its fusing-point Coach Outlet Online the new acid sublimes. The boiling-point is considerably above 300 . The acid is nearly inodorous and tasteless when heated it feebly evolves the odour of naphthaline its vapour, like that of benzoic acid, irritates the respiratory organs. The solutions of this acid have a distinct Coach outlet action UGG boots sale upon litmus-paper, and decompose with facility (more especially on heating) the alkaline carbonates.
In accordance with a principle of nomenclature which I proposed some time ago, I will designate the new acid by the name menaphthoxylic or Nike outlet store naphthaline-carboxylic acid. In this case the amide receives the name menaphthoxylamide, the nitrile that of menaphthenylnitrile. I UGG boots outlet may be permitted briefly to mention some of the observations which, in studying the new compound, I have already been able to collect. It has been stated that the nitrile fixes water with facility. It could not be doubtful that in like manner it would Coach handbags new 2012 also combine with sulphuretted hydrogen. Indeed, when dissolved in alcoholic sulphide Coach Outlet Store of ammonium, and exposed for some hours to a temperature of 100 , the nitrile absorbs one molecule of hydrosulphuric acid, being converted into a beautifully crystalline body, easily soluble in alcohol, which fuses at 126 , and has the composition C HBNS = C N + H2S. This substance is menaphthosulphylamide, corresponding to thiobenzamide, the sul phuretted derivative of benzonitrile discovered by M. Cahours. I have examined menaphthoxylic acid somewhat in detail. Like benzoic acid, to which it has a strongly marked family resemblance, it is a monobasic acid.