reaction product of diphenylmethanediisocyanate, toluenediisocyanate ( reaction mass of isomers: 65 % 2,4- and 35 % 2,6-diisocyanate), octylamine, oleylamine and 4-ethoxyaniline (molar ratio 3.88:1:6.38:0.47:2.91)

Endpoint summary

Additional information

Appearance

At ambient conditions the test substance is a white solid.

Melting point

The melting point of the test substance was determined according to EU method A.1, OECD Guideline 102 and EPA OPPTS 830.7200 guideline. The test substance starts melting at 225 °C using a heating rate of 1 K/min. At temperatures in the vicinity of this melting temperature the test substance starts to decompose.

Density

The relative density of the test substance was determined according to EU method A.3, OECD Guideline 109, and EPA OPPTS 830.7300 guideline. The density of the test substance was determined to be 0.943 g/cm³ at 20 °C using a gas comparison pycnometer. The determination of the relative density of the test substance was performed by three-fold measurements of two independent test substance samples.

 

Vapour pressure

The vapour pressure of the test substance was estimated according to EU method A.4, OECD Guideline 104, and EPA OPPTS 830.7950 guideline. The vapour pressure of the test substance was estimated to be < 8 E-12 Pa at 25 °C based on the boiling point calculated and using the Modified Watson Correlation. From this result, it can be concluded that the vapour pressure of the test substance is too low to have any relevant effect on the environment.

Partition coefficient

The partition coefficient of the test substance was estimated according to EU method A.8 (Leo-Hansch method), OECD Guideline 117, and EPA OPPTS 830.7570 guideline. The partition coefficient of the test substance was estimated to be log Pow > 5 using the Leo-Hansch method. The test substance was not soluble in n-octanol and only slightly soluble in water. Therefore, due to the low solubility of the test substance in water and n-octanol and the low sensitivity of the analytical methods available the experimental determination of the partition coefficient by any analytical technique was technically not feasible.

Water solubility

The water solubility of the test substance was determined according to EU method A.6, OECD Guideline 105, and EPA OPPTS 830.7840, EPA OPPTS 830.7860 guideline and DIN EN 1484 guideline. Because of the low solubility of the test substance in water and the low sensitivity of the analytical method available the experimental determination of the water solubility of the test substance was technically not feasible.

Therefore, the water solubility of the test substance was estimated to be in the range of 1 mg/L (quantification limit of the DOC measurements) at 20 °C +/- 1 °C. Thus, the test substance was considered to be slightly soluble or insoluble.

 

Auto flammability

The relative self-ignition temperature of the test substance was determined according to EU method A.16. Using a linear increase in temperature of 0.5 K/min, the test substance shows one exothermic reactions. The exothermic reaction started at about 252 °C. A maximum temperature of about 278 °C was measured in the sample cube. At the end of the run, the test substance showed a loss of mass of about 74 % and coloured black. As mentioned in IUCLID section 4.2 at temperatures in the vicinity of the melting temperature (225 °C) the test substance started to decompose. In conclusion, the test substance is not auto-flammable, according to the criteria as described in the guidelines.

 

Flammability

The flammability of the test substance was determined according to EU method A.10. In contact with the ignition source, the test substance melted. The melt could be ignited with the flame and burned. However, the test substance could not sustain a burning reaction. In conclusion, the test substance is not highly flammable according to the criteria as described in the EU method A. 10. The flammability (contact with water) of the test substance was estimated according to EU method A.12. The chemical structure of the test substance does not contain chemical groups, which may lead to the conclusion that the test substance is capable of developing a dangerous amount of (flammable) gas in contact with air, damp air or water. The pyrophoric properties of the test substance were estimated according to EU method A.13. From the structural formula of the test substance it was concluded that the test substance is not pyrophoric. The test substance does not contain any chemical group that might lead to spontaneously ignition a short time after coming in contact with air at room temperature (circa 20°C).

 

Explosiveness

The explosive properties of the test substance were estimated according to EU method A.14. From the structural formula of the test substance it was concluded that the test substance is not explosive. The test substance does not contain any chemically instable or highly energetic groups that might lead to an explosion.

Oxidising properties

The oxidising properties of the test substance were estimated according to EU method A.17. From the structural formula of the test substance it was concluded that the test substance has no oxidising properties. The test substance does not contain any chemical group that might act as an oxidising agent.