SEARCH Articles Figures Tables Changes in melting points for symmetric tetraalkylammonium bromide salts with increasing size of alkyl substituents. [Publishers Imprint] See Also: Changes in melting points for symmetric tetraalkylammonium bromide salts with increasing size of alkyl substituents. Changes in melting points for symmetric tetraalkylammonium bromide salts with increasing size of alkyl substituents. Changes in melting points for symmetric tetraalkylammonium bromide salts with increasing size of alkyl substituents.