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EC number: 229-419-9 | CAS number: 6528-34-3
Auto flammability
Administrative data
Link to relevant study record(s)
- Endpoint:
- auto-flammability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 1999
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Acceptable, well-documented study report which meets basic scientific principles.
- Principles of method if other than guideline:
- Grewer screening and hot storage test, similar to procedure in VDI 2263 sheet 1
- Auto-ignition temperature:
- ca. 230 °C
- Atm. press.:
- ca. 1 013 hPa
- Remarks on result:
- other:
- Relative self-ignition temperature:
- ca. 230 °C
- Remarks on result:
- other:
- Remarks:
- at atm. press. of ca.1013.0 hPa
- Conclusions:
- The Grewer oven screening showed self-heating at 230 °C. The hot storage test at 194 °C revealed weak self-heating of 5 °C within 25 hours. The test item is not a self-heating solid of UN class 4.2.
- Executive summary:
Self-ignition of the test substance was investigated by a Grewer oven screening and a hot storage test. The Grewer oven screening showed self-heating at 230 °C. The hot storage test at 194 °C revealed weak self-heating of 5 °C within 25 hours (270 g test substance).
The test item is not a self-heating solid.
Reference
The Grewer oven screening showed self-heating to ca. 330 °C starting from 230 °C.
Another self-heating effect appears above 300 °C (max. temp. ca. 430 °C).
The hot storage test revealed weak self-heating.
When stored at 194 °C, the sample reached a maximum temperature of 199 °C 5.1 h (306 min) after temperature equalisation (which occurred 5.7 h after the start of the test).
Description of key information
The Grewer oven screening showed self-heating at 230 °C. The hot storage test at 194 °C revealed weak self-heating of 5 °C within 25 hours. The test item is not a self-heating solid of UN class 4.2
Key value for chemical safety assessment
- Autoflammability / Self-ignition temperature at 101 325 Pa:
- 230 °C
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