Hydrochloric economic importance

Economic Importance of Hydrogen Chloride and Hydrochloric Acid... 

Of all pure chemicals water must surely be considered the essence of terrestrial life. Of Empedocles s original four elements it is the only one which we would still recognize as being a single pure discrete species, although of course, at the molecular level rather than at the atomic. Water is not only essential to biochemical processes, but is of primary importance to industrial and economic chemistry. There is thus some practical justification for the habitual aquocentricity of classical solution chemistry which chooses high dilution in water as the standard state for most studies. The economic importance of sulfuric and hydrochloric acids as heavy... 

The formation of aromatic isocyanate trimers is of economic importance, because rigid insulation foams, having isocyanurate structures built into their network structure, are produced from aromatic diisocyanates. Triphenyl isocyanurates with hydroxyl or carboxyl groups in their p-positions can be obtained on hydrolysis of McsSiO- and McsSiOCO-groups, respectively, with hydrochloric acid °. Such trifunctional compounds are of use in the construction of network polymers. The mechanism of the phenyl isocyanate trimer-ization, using Pd(o) diimide catalysts was elucidated recently. The initial steps of this trimerization reaction involve a chain growth process as encountered in the anionic homopolymerization of isocyanates. 

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