Congress The 2020 International Chemical Congress of Pacific Basin Societies (PAC CHEM), will take place in Honolulu, Hawaii, USA, December 15-20, 2020. The conference is sponsored jointly by the American Chemical Society (ACS), the Canadian Society for Chemistry (CSC), the Chemical Society of Japan (CSJ), the New Zealand Institute of Chemistry (NZIC), the Royal Australian Chemical Institute (RACI), the Korean Chemical Society (KCS), and the Chinese Chemical Society (CCS). The Chemical Society of Japan is the host society for the 2020 Congress.