The story
The Italian Chemical Society was formed in 1909 by the union of two existing societies, the Chemical Society of Rome, founded in 1902, and the Chemical Society of Milan, founded in 1895. The two original societies became sections of the new one and a third section was added in 1910, when the Chemical Society of Naples was incorporated.
During the First World War, the activity of the society experienced a marked decrease and the link among the three sections got was loosened, with the result that, in 1919, the section in Milan claimed its independence and became the Society of Industrial Chemistry (Societa′ di Chimica Industriale).
In 1928, the Society of Industrial Chemistry of Milan and the Society of General and Applied Chemistry of Rome merged into the Italian Association of Chemistry (Associazione Italiana di Chimica), which finally assumed the name of Italian Chemical Society on 1 January 1947, maintaining exactly the same structure as before.
From Wikipedia’s article on Italian Chemical Society, shared under CC BY-SA 4.0.3