CAS No. 110-05-4 TSCA Status listed on inventory Active oxygen content peroxide 10.94% EINECS/ELINCS No. 203-733-6 Molecular weight 146.2 Characteristics Clear liquid Density, 20 �°C 0.800 g/cm�³ Viscosity, 20 �°C 0.9 mPa.s Packaging and transport Polyethylene white plastic drum 20KG. DTBP is classified as Organic peroxide type E; liquid, Division 5.2; UN 3107.