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Encyclopedia Britannica - Main :: AJA-ALL |
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ALDEHYDES , a class of chemical compounds of the general formula
alcohol
alcohols
lower
series are neutral liquids possessing a characteristic smell; they are soluble in water and are readily volatile (formaldehyde, however, is a gas at ordinary temperatures). As the carbon content of the molecule increases; they become less soluble in water, and their smell becomes less marked with the increase in boiling point, the highest members of the series being odourless solids, which can only be distilled without decomposition in vacuo,CRRI CRR' [ --> 0< CHCOOC2H6 CH.000H CO2+CHRR'CHO. In the German Patent 157573 (1904) it is shown that by the action of at least two molecular proportions of an alkyl formate on two molecular proportions of a magnesium alkyl or aryl haloid, a complex addition compound is formed, which readily decomposes into a basic magnesium salt
C615MgBr+HCOOR> RO CH C6H5.OMgBr>MgBrOR+ End of Article: ALDEHYDES If you wish, you can link directly to this article.
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