%0 Journal Article %T The 'Instrumental' Reality of Phlogiston %A Mi Gyung Kim %J Hyle : International Journal for Philosophy of Chemistry %D 2008 %I HYLE Publications, Karlsruhe and University of Karlsruhe %X The stability of phlogiston in eighteenth-century French chemistry depended not on its role as a comprehensive theory, but on its operational (instrumental), theoretical, and philosophical (speculative) identities that were forged in different contexts, yet were interwoven to designate a single substance. It was as 'real' as any other chemical substance to the degree that it was obtained through material operations, occupied a place in the theoretical edifice of the affinity table, and was endowed with a corpuscular ontology. Lavoisier labeled it as an 'imaginary' substance because it offered a unique resistance to his vision of the new chemistry based on 'metric' measurements and algebraic representations. %K philosophy of chemistry %K eighteenth-century chemistry %K Sulphur Principle %K Fire %K Phlogiston %K affinity table %U http://www.hyle.org/journal/issues/14-1/kim.pdf