Historians suggesting an early phase of globalisation in the decades before the First World War have pointed to new specialist learned societies as among the agents in the process. This paper explores the international dimensions of national chemical societies in this era of empires. During the nineteenth century, national chemical societies were established in many countries. Four of the earliest and largest – the [British] Chemical Society (founded 1841), the Société Chimique de France (1857), the Deutsche Chemische Gesellschaft (1867), and the American Chemical Society (1876) – recruited numerous members living abroad, so that, by the early twentieth century, such “extra-national” members – members, that is, who lived outside the state in which the society was based – constituted a substantial share of their memberships. Our paper examines this phenomenon. It argues that an analysis of extra-national members can help us chart the spread of chemistry around the globe. It considers whether the extra-national memberships of these chemical societies can be seen as constituting early, overlapping global networks of individuals, based on their common membership of leading societies.

The supply of experimental materials greatly influences the practice of science. Before the establishment of modern commercial distribution systems for experimental materials, researchers often used mundane substances. The wires of the harpsichord, a representative keyboard instrument of the Baroque era, were used as “multifaceted materials” in physical and chemical experiments from the eighteenth to the nineteenth centuries. Because the wires were made of largely pure iron, they were utilised as a standard substance in permanganometry until their impurities proved experimentally problematic. Although the early wires gradually disappeared from chemical experiments around the beginning of the twentieth century, they were reincarnated as steel wires with the advent of the modern harpsichord and reemerged as actors on the musical stage in the context of Neoclassical music. As a result of shifting practices in the use of harpsichord wires, the concept of a standard substance in titration gradually took shape at the intersection of the histories of science and music.

This paper investigates the Chinese American Chemical Society (CACS) as an organisation of the scientific diaspora at the end of the Cold War. Established in 1981 by mostly first-generation immigrants, the CACS adopted a non-political stance to boost the career of its members in the United States, China, and Taiwan. Tracing this non-political sensitivity to its founder, Jesse Hwa (1924–2008), the paper begins with Hwa’s career as an immigrant scientist and his experience with China at the beginning of its economic reforms of the 1970s. It then studies the CACS’s ambition to overcome the Cold War divide in the 1980s and reach out to Taiwan and China simultaneously. However, with limited success in technology transfer and facing issues in expanding the membership, the CACS faced a further crisis in the June Fourth Incident of 1989. As the officers tried to maintain the non-political stance amid varying responses from its members, the CACS increasingly turned attention to forging an identity for Chinese American chemists. By analysing the strategies of the CACS in building a community within the scientific diaspora, the paper enriches current scholarship on the history of twentieth-century chemistry and science diplomacy during the final days of the Cold War.