Gas temperature for the ejecta regions defined in Table 2 as a function of the post-explosion time from Kozma & Fransson (1998), except the O/C/Mg zone where values are from Liljegren et al. (2020). The label SC13 refers to the temperature profile used in Sarangi & Cherchneff (2013). The shaded area represents the temperature regime at which dust forms in dust-producing experiments in the laboratory (e.g. high-temperature flame or vapour condensation experiments).