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Physical & Chemical properties

Endpoint summary

Administrative data

Description of key information

Additional information

The substance RED JB 747 is a solid dark red powder under conditions of 20 °C and 1013 hPa.

A melting point cannot be determinated since the substance decomposes before melting (300 °C). The boiling point of RED JB 747 was not determined as the study scientifically unjustified: according to column 2 of Annex VII of REACH (information requirement section 7.3), the study does not need to be conducted since the substance is a solid which decomposes before boiling.

The relative density of RED JB 747 was determined according to EU method A.1 (1992) and OECD guideline 109 (1981) with the use of an air comparison pycnometer and it reulted to be 1.669.

The particle size distribution of RED JB 747 was determined according to OECD guideline 110 (1981). The test consisted in two parts: (1) sieving method for particle in the range of 63-200 µm and >200 µm; and (2) multistage impactor method for particle size in the range of 0.36-63 µm. The results show that the tested material is a powder with a rate of 0.63 mass-% greater than 63 µm; 50 mass-% of the substance were smaller than 3.1 µm, which is the median mass diameter. The maximum of mass frequency was about 1.8 µm.

The vapour pressure of RED JB 747 was calculated according to the Modified Watson Correlation on the basis of dirrent estimated boiling points. The first one was calculated using the Meissner’s method and resulted in 976 °C, from which the vapour pressure was calculated to be 6*10-37 Pa at 25 °C. Also, since RED JB 747 decomposes at ca. 300 °C, this value was chosen for a second calculation of the vapour pressure and this resulted in a value of <9.2*10-3 Pa at 25 °C. Anyhow it can be concluded that the substance is practically non-volatile.

The logKow of RED JB 747 was measured according to EU method A.8 (1992) and OECD guideline 107 (1981) with shake flash method and was determined to be -2.9 ± 0.1, at the temperature of 22 ± 0.1 °C and pH of 7. It should be noted, however, that the abovementioned logKow value is outside the applicability domain of the shake flash method (AD: from -2 to 4 logarithmic unit). Despite, the logKow value should be considered reliable but with restrictions, it can be considered representative for the substance.

Also, the water solubility was determined with the flask method and it resulted in a value of 32.5 ± 1.1 g/L, at 20 ± 0.5 °C and pH 6.3.

The surface tension of RED JB 747 was measured according to EU method A.5 (1992) and OECD guideline 115 (1981) with the ring method, resulting in a value of 54.6 mN/m at 22.1 °C and concentration of 1000 mg/L.

The study on the flash point of RED JB 747 is technically not feasible since the substance is a solid. 

The auto-flammability of RED JB 747 was measured according to EU method A.16 (1992) resulting with a self-ignition temperature of 299 °C.

The flammability of RED JB 747 was measured according to EU method A.10 (1992) resulting in the conclusion that the substance is not highly flammable according to the criteria as described in the guideline. The substance in contact with a flame exhibits glowing without, however, burning. In addition, the propagation of the reaction front (i.e. glowing) was estimated to be ca. <2 cm/min and after ca. 5 seconds the flame extinguished on the surface of the test article.

The explosiveness of RED JB 747 was measured according to EU method A.14 (1992) resulting in the conclusion that the substance is not explosive. In detail, RED JB 747 gave negative results regarding the thermal sensitivity, mechanical sensitivity with respect to shock and mechanical sensitivity with respect to friction, resulting in no explosion under any of the abovementioned circumstances.

Based on the information and review of the substance, it is seemed not to be potentially oxidizing.