reaction product of diphenylmethanediisocyanate, octylamine, 4-ethoxyaniline and ethylenediamine (1:0,37:1,53:0,05)

Auto flammability

Link to relevant study record(s)

Reference

Endpoint:

relative self-ignition temperature (solids)

Type of information:

experimental study

Adequacy of study:

key study

Study period:

1999-02-15 to 1999-02-16

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.16 (Relative Self-Ignition Temperature for Solids)

Version / remarks:

December 1992

Deviations:

no

Principles of method if other than guideline:

NA

GLP compliance:

yes (incl. QA statement)

Key result

Remarks on result:

no self ignition observed under the test conditions

Remarks:

As mentioned in IUCLID section 4.2 the test substance starts to decompose at about 280 °C. In conclusion, Urea 4 is not auto-flammable according to the criteria as described in the guidelines.

Using a linear increase in temperature of 0.5 K/min, Urea 4 shows two exothermic reactions. The first exothermic reaction started at about 260 °C. A maximum temperature of about 300 °C was measured in the sample cube. The second exothermic heat effect started at about 380 °C. At the end of the run, Urea 4 showed a loss of mass of about 70 % and coloured black.

Conclusions:

Using a linear increase in temperature of 0.5 K/min, Urea 4 shows two exothermic reactions. The first exothermic reaction started at about 260 °C. A maximum temperature of about 300 °C was measured in the sample cube. The second exothermic heat effect started at about 380 °C. At the end of the run, Urea 4 showed a loss of mass of about 70 % and coloured black. In conclusion, Urea 4 is not auto-flammable, according to the criteria as described in the guidelines.

Executive summary:

The relative self-ignition temperature of Urea 4 was determined according to EU method A.16. Using a linear increase in temperature of 0.5 K/min, Urea 4 shows two exothermic reactions. The first exothermic reaction started at about 260 °C. A maximum temperature of about 300 °C was measured in the sample cube. The second exothermic heat effect started at about 380 °C. At the end of the run, Urea 4 showed a loss of mass of about 70 % and coloured black. As mentioned in IUCLID section 4.2 the test substance starts to decompose at about 280 °C. In conclusion, Urea 4 is not auto-flammable according to the criteria as described in the guidelines.

Description of key information

Using a linear increase in temperature of 0.5 K/min, Urea 4 shows two exothermic reactions. The first exothermic reaction started at about 260 °C. A maximum temperature of about 300 °C was measured in the sample cube. The second exothermic heat effect started at about 380 °C. At the end of the run, Urea 4 showed a loss of mass of about 70 % and coloured black. In conclusion, Urea 4 is not auto-flammable according to the criteria as described in the guidelines.

Additional information

The relative self-ignition temperature of Urea 4 was determined according to EU method A.16. Using a linear increase in temperature of 0.5 K/min, Urea 4 shows two exothermic reactions. The first exothermic reaction started at about 260 °C. A maximum temperature of about 300 °C was measured in the sample cube. The second exothermic heat effect started at about 380 °C. At the end of the run, Urea 4 showed a loss of mass of about 70 % and coloured black. As mentioned in IUCLID section 4.2 the test substance starts to decompose at about 280 °C. In conclusion, Urea 4 is not auto-flammable according to the criteria as described in the guidelines.