Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 943-625-2 | CAS number: -
Auto flammability
Administrative data
Link to relevant study record(s)
- Endpoint:
- relative self-ignition temperature (solids)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2003-01-14
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- test procedure in accordance with national standard methods with acceptable restrictions
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- DIN EN 15188 (Determination of the spontaneous ignition behaviour of dust accumulations)
- Principles of method if other than guideline:
- Deposited dust: This test determines the ignition temperature of a dry product on a hot surface. For a description of the method see "any other information on materials and methods".
- GLP compliance:
- not specified
- Key result
- Relative self-ignition temperature:
- > 360 °C
- Remarks on result:
- no self ignition observed under the test conditions
- Conclusions:
- No auto-ignition of deposited TDI-Urone dust occurred on surfaces until 360°C.
- Executive summary:
The test determines the ignition temperature of a deposited dusty test substance on hot surfaces. The test is conducted according to the test protocol. The surface area of the substance is increased intentionally in this test by preparing the test substance accordingly to simulate the deposited dusty properties. The ignition temperature of deposited dusty test material is expected to be lower than the ignition temperature of the solid with larger particle diameters. At the hottest temperature in this test (360°C) there was no reaction observed for deposited TDI-Urone dust.
- Endpoint:
- self-ignition of dust accumulation
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Study period:
- 2003-01-14
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- test procedure in accordance with national standard methods with acceptable restrictions
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- DIN EN 15188 (Determination of the spontaneous ignition behaviour of dust accumulations)
- Principles of method if other than guideline:
- Dispersed dust: This test determines the ignition temperature of flammable dispersed dusty substances on hot surfaces. See section "any other information on materials and methods" for detailed description of the method.
- GLP compliance:
- not specified
- Key result
- Self-ignition temperature:
- >= 435
- Conclusions:
- The lowest temperature at which ignition of dispersed TDI-Urone dust was observed was 435°C.
- Executive summary:
The test determines the ignition temperature of a dispersed dusty test substance on hot surfaces. The test is conducted according to a test protocol. The surface area of the substance is increased intentionally in this test by preparing the test substance accordingly to simulate the dispersed dusty properties. The ignition temperature of dispersed dusty test material is expected to be significantly lower than the ignition temperature of the solid with larger particle diameters. The lowest temperature at which ignition of dispersed TDI-Urone dust was observed was 435°C.
Referenceopen allclose all
At the highest tested temperature (360°C) there was no reaction observed for deposited TDI-Urone dust.
The lowest temperature at which ignition of dispersed TDI-Urone dust was observed was 435°C.
Description of key information
Two tests for dusty TDI-Urone are available evaluating the auto-flammability on hot surface for deposited and dispersed TDI-Urone with particle diameter of 0.25 mm. No auto-ignition of deposited TDI-Urone dust occurred on surfaces until 360°C.
The lowest temperature at which ignition of dispersed TDI-Urone dust was observed was 435°C.
Key value for chemical safety assessment
Additional information
The test for deposited TDI-Urone (100 mg) was conducted for 5 min on a hot surface up to 360°C. No reaction was observed.
The test for dispersed TDI-Urone was conducted on a surface up to 600°C. The lowest temperature at which ignition of dispersed TDI-Urone dust was observed was 435°C.
As the tests were conducted with smaller particle diameters due to grinding and sieving the tested dusty TDI-Urone is expected to react even more sensible with regard to auto-flammability as original TDI-Urone produced directly from the operating facilities. Therefore it is concluded that the self-ignition temperature of TDI-Urone is higher than 360°C. This temperature is higher than the melting point (approx. 185°C). Thus TDI-Urone melts before it is self-ignited.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
