Preface for special issue of ICGC-9 in Athens, Greece.

The ICGC-9 was organized by the Association of Greek Chemists (AGC) in collaboration with the IUPAC Interdivisional Committee on Green Chemistry for Sustainable Development (ICGCSD). Keywords: Green Chemistry; ICGC series; ICGC-9; IUPAC EN Green Chemistry ICGC series ICGC-9 IUPAC 463 464 2 07/14/23 20230501 NES 230501 The 9th IUPAC International Conference on Green Chemistry (ICGC-9), took place in Athens, Greece, on 5th-9th September 2022 at Zappeion Megaron, offering the choice of virtual participation. Green Chemistry, ICGC-9, IUPAC, ICGC series. [Extracted from the article]