Aluminum, 2-(2-quinolinyl)-1H-indene-1,3(2H)-dione sulfo derivs. complexes

Endpoint summary

Description of key information

All considerations about the appearance, physical state, colour of the test item are based on information about specification (technical standard), experience in dealing with the substance and visual evaluation. The substance is a solid, in particular a yellow powder.

About melting and freezing point were observed endothetmic event from 41 °C to 349 °C with a magnitude of 390.81 J/g and onset at 126.5 °C with two maxima at 130 °C and 240 °C.

For the boiling point data waiving has been applied according to the REACH regulation (EC n. 1907/2006), Annex VII, Column 2, the study does not need to be conducted because the substance melts above 300 °C.

The density of the substance was measured. The procedure was performed according to the Method A.3, Relative density, Council Regulation (EC) No. 440/2008, Published in O.J. L 142, 2008. Relative density of the substance is 1.921.

For particle size distribution the laser diffraction based on the Mie-scattering theory was selected for determination. D10 value is 1.46µm, D50 value is 10.88 µm, D90 value is 24.15 µm.

For the vapor pressure data waiving has been applied according to the REACH regulation (EC n. 1907/2006), Annex VII, Column 2, the study does not need to be conducted because the substance melts above 300 °C.

For the partition coefficient data waiving has been applied according to the REACH regulation (EC n. 1907/2006), Annex VII, Column 2, the study does not need to be conducted because the substance does not dissolve in water or in octanol.

Percentage of water soluble compunds in the substance, UVCB item, established by the flask method is 4.40%. This value is obtained using the gravimetric method as analytical method. The test item is a pigment and as such it is expected to be approximately insoluble. The higher that expected solubility resulted in the test can be a consequence of the testing procedure: stirring at 30°C for some days can partially break the aluminium complexes present in the UVCB item or stirring at a pH=4.2 can partially convert Aluminium hydroxide in its soluble forms.

For surface tension data waiving has been applied according to the REACH regulation (EC n. 1907/2006), Annex VII, Column 2, the study does not need to be conducted because based on structure, surface activity is nor expected or predicted.

For flash point data waiving has been applied according to the REACH regulation (EC n. 1907/2006), Annex VII, Column 2, the study does not need to be conducted because the substance is solid at 20 °C and 1013 hPa and melting point is above 300 °C.

About auto flammability there are evidence connected to the long experience in handling, use and transport of the substance confirms the non self-ignition properties. Thus, the substance is expected to be an air-stable compound at room temperature over a prolonged period of time (days), without noticeable or undesirable reactions. In conclusion, for the substance a potential for spontaneous ignition is not expected: the substance can be considered as a no-pyrophoric and no-self-heating solid because it is liable to self-heat by reaction with air and without energy supply.

About flammability the test was carried out according to EU Method A.10, leading to negative result. The substance is classified as non flammable. After applying the flame for the 2 minute test period, the flame does not propagate along the 200 mm train.

For explosiveness according to the REACH Regulation (EC n. 1907/2006), Annex VII, Column 2, the study does not need to be conducted because based on structure there are no chemical groups associated with explosive properties.

For oxidising properties data waiving has been applied: based on the REACH Regulation, EC 1907/2006, Annex VII, Column 2, 7.13 Oxidising properties states that, " The study does not need to be conducted if the substance is incapable of reacting exothermically with combustible materials, for example on the basis of the chemical structure (e.g. organic substances not containing oxygen or halogen atoms and these elements are not chemically bonded to nitrogen or oxygen, or inorganic substances not containing oxygen or halogen atoms). According to the the considerations above the test item can be considered not oxidising.

The determination of Aluminium migration in water from the substance has been derived using ICP as instrument of detection. Total Al detected (ICP) = 92.99 mg/L (2.0946 g of the substance as starting material). According to the test conditions, it can be concluded that the migration of Al in water can be considered negligibile since Aluminium is totally embedded into the matrix of the lake complex. The minimum amount of free Aluminium detected is deriving from AlCl3 present in the sample. According to the calculation it can be noted that AlCl3 is not completely dissociated in water and that it is also embedded into the matrix of the lake complex, thus it is not bioavailabile in its total amount.