The term vinegar syndrome started with 35mm mag fullcoat. Problem was, in the movie biz, the mag was stored in metal cans for protection which over the years reacted and caused the breakdown. The cheap indie studios stored their mag in cardboard containers on cores and these have survived for the most part. So because of the metal reels the entire three channel music score for 1959's BEN HUR has vinegar syndrome and is now dead while Victor Young's AROUND THE WORLD IN 80 DAYS from 1956 stored on plastic cores in Todd-AO cardboard containers can still be played. It is stinking a bit though..