Quantitative dependence of the amount of impurities in commercial 1,4-butanediol that affect the carbonyl number, γ-hydroxybutyraldehyde and its acetate with 1,4-butanediol, on the service life of the catalyst was determined. Hydrazine hydrate, 2,4-dinitrophenylhydrazine, and hydroxylamine hydrochloride were studied as reagents binding these impurities and raising the content of the main substance in the target product. A procedure is suggested for obtaining purified 1,4-butanediol. The optimal reagent is a mixture of a 30% aqueous solution of hydrazine hydrate with hydrochloric acid.
Russian Journal of Applied Chemistry – Springer Journals
Published: Mar 28, 2014
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