Registration Dossier
Registration Dossier
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EC number: 237-769-9 | CAS number: 13981-86-7
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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:
- 01 October 2018 to 10 January 2019
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- other: UN Test N.4. Test Method for Self-heating Substances.
- Version / remarks:
- 2015
- Deviations:
- no
- GLP compliance:
- yes
- Key result
- Remarks on result:
- no self ignition observed under the test conditions
- Conclusions:
- Under the conditions of the study it was concluded that the test material is not a self-heating substance.
- Executive summary:
The self-heating properties of the test material were assessed according to UN Test N.4 and in compliance with GLP.
The test material was exposed to air at 140°C using a temperature controlled laboratory oven, a cubic stainless steel wire 10 cm sample container, NiCr/Ni thermocouples and a temperature recording device. The test material was ground down using a mortar and pestle.
A sample container with dimensions of 10 x 10 x 10 cm and a mesh size of 0.053 mm was filled with the ground test material. The container was housed in a stainless steel container cover of 11 x 11 x 11 cm with a mesh size of 0.60 mm.
One thermocouple was placed at the centre of the sample container. To avoid the effect of air circulation the sample container was installed in a stainless steel cage of 15 x 15 x 25 cm with a mesh size of 0.60 mm. The sample container was placed in the centre of the oven. The other thermocouple was placed between the sample container and the wall of the oven.
The oven temperature was raised to 140°C ± 2°C and kept for 24 hours. The temperature of the sample and the oven were recorded with time intervals of 5 minutes. After the experiment, the sample was cooled and the consistency of the test material was determined.
A negative result was obtained. No spontaneous ignition occurred and no exothermic effect of the test material was observed. It demonstrated that the test material is “not a self-heating substance”. According to the UN guideline, no further testing is required.
After the experiment, the consistency of the sample was unchanged, i.e. no reaction and/or decomposition of the test material was observed.
From the negative result obtained at 140°C using a 10 cm sample cube, it was concluded that the test material is not a self-heating substance.
Reference
A negative result was obtained. No spontaneous ignition occurred and no exothermic effect of the test material was observed. It demonstrated that the test material is “not a self-heating substance”. According to the UN guideline, no further testing is required.
After the experiment, the consistency of the sample was unchanged, i.e. no reaction and/or decomposition of the test material was observed.
Description of key information
Under the conditions of the study it was concluded that the test material is not a self-heating substance.
Key value for chemical safety assessment
Additional information
The self-heating properties of the test material were assessed according to UN Test N.4 and in compliance with GLP. The study was awarded a reliability score of 1 in accordance with the criteria set forth by Klimisch et al. (1997).
The test material was exposed to air at 140°C using a temperature controlled laboratory oven, a cubic stainless steel wire 10 cm sample container, NiCr/Ni thermocouples and a temperature recording device. The test material was ground down using a mortar and pestle.
A sample container with dimensions of 10 x 10 x 10 cm and a mesh size of 0.053 mm was filled with the ground test material. The container was housed in a stainless steel container cover of 11 x 11 x 11 cm with a mesh size of 0.60 mm.
One thermocouple was placed at the centre of the sample container. To avoid the effect of air circulation the sample container was installed in a stainless steel cage of 15 x 15 x 25 cm with a mesh size of 0.60 mm. The sample container was placed in the centre of the oven. The other thermocouple was placed between the sample container and the wall of the oven.
The oven temperature was raised to 140°C ± 2°C and kept for 24 hours. The temperature of the sample and the oven were recorded with time intervals of 5 minutes. After the experiment, the sample was cooled and the consistency of the test material was determined.
A negative result was obtained. No spontaneous ignition occurred and no exothermic effect of the test material was observed. It demonstrated that the test material is “not a self-heating substance”. According to the UN guideline, no further testing is required.
After the experiment, the consistency of the sample was unchanged, i.e. no reaction and/or decomposition of the test material was observed.
From the negative result obtained at 140°C using a 10 cm sample cube, it was concluded that the test material is not a self-heating substance.
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