Reactivity of the Isolated Lignin (Part I):Isolation of the Lignin by Precipitation and Salting-out

概要

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The alkali lignins have been precipitated with the anorganic acids (sulphuric acid and hydrochloric acid) and with the some organic acids (formic, acetic, lactic, oxalic, tartaric, citric acid), as well as the lignosulphonic acid with caustic soda. On these cases, the effects of the hydrogen-ion concentrations and the salting-out effects of some salts (CaCl2, Na2SO4, NaCl, Pb (CH3CO) 3·3H2O) were researched. On the reactivity of these alkali lignins with phenol and anilin will be reported in the following reports.
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