8/4/2023 0 Comments Chromium iii sulfide formula![]() Since 33% of the anion charges are due to hydroxy ions the basicity is 33% (but in tanning jargon it is known as 33% reduced). Basic chromium(III) sulfate īasic chromium sulfate is produced from chromate salts by reduction with sulfur dioxide, although other methods exist. Similarly, dissolution of chrome alloys gives chromium sulfate together with ferrous sulfate. Extraction of chromite ore with sulfuric acid in the presence of some chromate gives solutions of chromium(III) sulfate contaminated with other metal ions. The hydrated salts of chromium sulfate can also be produced, albeit impure, by extraction of various other chromium compounds, but these routes are not economically viable. Evaporation of these acidic solutions affords the hydrate salt described above. A chromium(III) oxide coproduct is generated which is readily extracted into sulfuric acid. Anthroquinone and quinone are produced on large scale by treatment of anthracene and phenol with chromic acid. The most useful source of chromium(III) sulfate are the Cr(III) wastes from the chromate oxidation of various organic compounds. Structure of Cr(SO 4)(H 2O)(OH), showing the CrO 6 coordination sphere typical of many chromium(III) compounds. Other chromium(III) hydroxides have been reported. It results from the partial neutralization of the hexahydrates. Most important commercially is basic chromium sulfate, which is thought to be SO 4 (CAS#3). Further heating yields the anhydrous sulfate.Ī variety of other chromium(VI) sulfates are known, but also contain hydroxide or oxide ligands. It is obtained by heating the 18-hydrate material above 70 ☌. ![]()
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