P 1205 (OTTO) Palladium on charcoal activated, 5% Pd - used for the reduction of trimesic acid to form a mixture of cis,cis and cis,trans isomers of 1,3,5-cyclohexanetricarboxylic acid. P 1205 (OTTO) Palladium on charcoal activated, 5% Pd - used for the conversion of benzylic and allylic alcohols into the corresponding carbonyl compounds in the presence of olefins as hydrogen acceptors.[3]