Properties Safety Price72 Uses Synthesis Suppliers 438 Spectrum L-Thyroxine Properties Melting point 235 °C alpha -5 º (1N NaOH:EtOH 1:2) Density 2.4440 (estimate) Flash point 9℃ storage temp. Keep in dark place,Inert atmosphere,2-8°C solubility Dissolves in 4M ammonium ...