Registration Dossier

Physical & Chemical properties

Endpoint summary

Administrative data

Description of key information

Reactive Red 024:1 is a red-brown powder. The melting point and boiling point was identified to be greater than 330 °C. Average relative density of test item at 20 °C was found to be 1.6661 g/cm³. The median particle size was 119.378 µm. The partition co-efficient n-octanol/water of Reactive Red 024:1 was determined to be Pow = 3.02 x 10-4, Log Pow = -3.52. The water solubility at 20 °C was determined to (without correction for the purity): = 434 g/l. The surface tension was determined to be 62.889mN/m at 20 °C. The auto-ignition temperature of test item cannot be determined, as no auto-ignition occurred up to 550 °C. No ignition was observed throughout the course of a flammability study, hence test material is considered as not highly flammable. The analysis of the chemical structure reveals no alerts for explosive properties for Reactive Red 24:1. The calculated chemical oxygen balance is above the trigger value of -200, but the determination of the exothermic decomposition energy demonstrated an energy release below the critical value of 500 J/g. Therefore, the substance is considered to be non-explosive according to Directive 67/548/EEC and Regulation (EC) 1272/2008 and no further testing are required. In accordance with Column 2 of REACH Annex VII, this study does not need to be conducted as this substance is incapable of reacting exothermically with combustible materials on the basis of its chemical structure.

Additional information