Estimation and separation of zirconium by use of fumaric acid

Abstract

Fumaric acid precipitates zirconium completely from solutions up to 0.35 N in hydrochloric acid. The precipitate, which has the approximate composition O = Z r = X (where X stands for the fumarate radical), is gelatinous; i t is ignited to give the oxide.From solutions 0.25 N in hydrochloric acid the reagent separates zirconium from aluminium, beryllium, uranium, nickel, barium, calcium, iron, manganese, thorium and the ceria earths in a single precipitation; vanadium, chromium, titanium, and tin are completely removed in a double precipitation. Zirconium has also been estimated in zircon. CHEMICAL LABORATORIESANDHRA UNIVERSITY TVALTAIR, s. INDIA

Ferrous Metallurgy

“…Thamer and Voight (148) investigated chloranilate complexes of zirconium, some of which may have application in the spectrophotometric determination of zirconium. Fumaric acid (154) was found to precipitate zirconium from solutions up to 0.35 .V in hydrochloric acid. The resulting gelatinous precipitate can be ignited to the oxide and weighed; a single precipitation was found sufficient for separation from aluminum, beryllium, nickel, barium, calcium, iron, manganese, and rare earths.…”