Registration Dossier
Registration Dossier
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EC number: 261-785-5 | CAS number: 59487-23-9
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:
- 2001
- 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
- Relative self-ignition temperature:
- ca. 250 °C
- Remarks on result:
- other: other: at atm. press. of ca.1013.0 hPa
- Conclusions:
- The Grewer oven screening showed weak self-heating at 260 °C. The hot storage test at 201 °C also revealed very weak self-heating of 4 °C. No classification in class 4.2 according to transport regulations required.
- 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 weak self-heating at 260 °C. The hot storage test at 201 °C also revealed very weak self-heating of 4 °C.
Reference
The Grewer oven screening showed weak self-heating starting from 260 °C. No other reactions were observed up to 400 °C.
The hot storage test also revealed very weak self-heating (4 K at 201 °C).
When stored at 201 °C, the sample reached a maximum temperature of 205 °C 1.9 h (114 min) after temperature equalisation (which occurred 3.7 h after the start of the test). After the weak self-heating of the sample, its temperature fell to ca. 190 °C and remained below the oven temperature for the rest of the test. The sample appeared unchanged after the test, but had lost 1.9 weight-%. A possible explanation ist the loss of the additives at the test temperature.
Therefore, safe drying up to a limit temperature of 190 °C (10 K safety margin) is ensured. But at this temperature the substance loses weight with time, which is supposed to be caused by evaporation of the additives.
Description of key information
Self-ignition of the test substance was investigated by a Grewer oven screening and a hot storage test. The Grewer oven screening showed weak self-heating at 260 °C. The hot storage test at 201 °C also revealed very weak self-heating of 4 °C.
Key value for chemical safety assessment
- Autoflammability / Self-ignition temperature at 101 325 Pa:
- 201 °C
Additional information
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