Potassium acetate antimony tartrate

Tests for S include the antimony test, silver-silver sulfide electrode test and the lead acetate paper and silver foil tests. In the antimony test, the color produced by treating a 200 ml test sample with 0.5 ml saturated potassium antimony tartrate and 0.5 ml 6 N HCl is compared with colors produced when solutions containing known amounts of S are treated in the same way. In the silver-silver sulfide electrode test, the test sample is diluted 1 1 with an alkaline solution of an oxidizing agent and the electrode potential relative to a double-junction reference electrode is measured. 

HSbOo is obtained by decomposing tartrate of antimony and potassium with acetate or alkaline carbonate Long). This hydi-ate presents the character rather of a base than of an acid. Nevertheless it can give rise to the formation of antimonites. 

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