The barium meal is a modern derivative of this research.

It can be prepared by heating mixture of benzil, alcohol and potassium hydroxide.

With the use of barium carbonate as starting material the first commercially used process became available in the 1860s developed by Margueritte and Sourdeval.

The protective group can be removed by heating the compound in a solution of potassium hydroxide in propan 2 ol (a retro Favorskii reaction).

The one acetate group that remains on mercury can be displaced by chloride C6H5OH Hg(OAc)2 C6H4(OH) 2 HgOAc HOAc C6H4(OH) 2 HgOAc NaCl C6H4(OH) 2 HgCl NaOAcThe Hg2 center binds to alkenes, inducing the addition of hydroxide and alkoxide.

A sulfonic acid (or sulphonic acid) refers to a member of the class of organosulfur compounds with the general formula R S( O)2 OH, where R is an organic alkyl or aryl group and the S( O)2 OH group a sulfonyl hydroxide.

Preparation Cadmium nitrate is prepared by dissolving cadmium metal or its oxide, hydroxide, or carbonate, in nitric acid followed by crystallization CdO 2HNO3 Cd(NO3)2 H2O CdCO3 2 HNO3 Cd(NO3)2 CO2 H2O Cd 4 HNO3 2 NO2 2 H2O Cd(NO3)2 Reactions Thermal dissociation at elevated temperatures produces cadmium oxide and oxides of nitrogen.