The IUPAC Technical Report on the preparation of polyaniline (PANI) as a conducting polymer is authored by J. Stejskal from the Institute of Macromolecular Chemistry in Prague and R. G. Gilbert from the Key Centre for Polymer Colloids at the University of Sydney. The report details the preparation of PANI by eight individuals from five institutions in different countries, following a standardized protocol. The yield of PANI hydrochloride was consistently over 90%, and the average electrical conductivity of the prepared samples was 4.4 ± 1.7 S cm⁻¹ at room temperature. The report also explores the effects of reaction temperature and acidity on PANI conductivity, noting that lower temperatures and higher acidity can enhance conductivity. Additionally, the report discusses the changes in conductivity during storage, finding that while there is a slight decrease over time, it is negligible compared to the initial conductivity. The density of PANI hydrochloride was found to be 1.329 g cm⁻³, and the average conductivity of PANI bases was 1.4 × 10⁻⁸ S cm⁻¹. The report concludes that the method described can consistently produce conducting PANI, with a typical standard deviation of 40% in conductivity, and that the electrical properties of PANI are relatively stable over time.The IUPAC Technical Report on the preparation of polyaniline (PANI) as a conducting polymer is authored by J. Stejskal from the Institute of Macromolecular Chemistry in Prague and R. G. Gilbert from the Key Centre for Polymer Colloids at the University of Sydney. The report details the preparation of PANI by eight individuals from five institutions in different countries, following a standardized protocol. The yield of PANI hydrochloride was consistently over 90%, and the average electrical conductivity of the prepared samples was 4.4 ± 1.7 S cm⁻¹ at room temperature. The report also explores the effects of reaction temperature and acidity on PANI conductivity, noting that lower temperatures and higher acidity can enhance conductivity. Additionally, the report discusses the changes in conductivity during storage, finding that while there is a slight decrease over time, it is negligible compared to the initial conductivity. The density of PANI hydrochloride was found to be 1.329 g cm⁻³, and the average conductivity of PANI bases was 1.4 × 10⁻⁸ S cm⁻¹. The report concludes that the method described can consistently produce conducting PANI, with a typical standard deviation of 40% in conductivity, and that the electrical properties of PANI are relatively stable over time.