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Studies in Ringformation By Anukul Chandra Sircar
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absolute alcohol acetoacetic ester acetone acid solution action added adsorbed adsorption alcoholic solution alkali ammonia amount arsenious sulphide available oxygen barium chloride benzene boiling carbonate catalyst caustic soda cent Chem chloroform coagulation cobalt colour compound concentration condensation cooling copper crystals decomposed decomposition dilute dissolved dithian dried electrolytes ester ether ethylene bromide evaporated excess Experimental experiments extracted ferricyanide filtered filtrate formed formula Found fractions gave gelatine gold numbers heated hydrazone hydrochloric acid insoluble iodic acid iodide iodine ions isomerides Lavoisier light melting method methyl alcohol mixture molecule nickel nitrate nitric acid observed obtained oxalate oxide pale yellow particles phenylhydrazone pinene potassium chloride precipitate prepared PtCl2 pyrazolone pyridine reaction reflux requires residue rubeanate salt sodium hydrogen sulphate solid soluble in alcohol solvents substance sucrate sucrose sulphuric acid Table temperature thiodiazine tion tube velocity washed water-bath yellow needles yield