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EC number: 200-848-3 | CAS number: 75-20-7
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:
- 20-23 June, 2005
- 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)
- GLP compliance:
- yes (incl. QA statement)
- Key result
- Relative self-ignition temperature:
- ca. 390 °C
- Conclusions:
- The relative self-ignition temperature is 390 °C, according to the testing guideline for autoflammability (solids - determination of relative self-ignition temperature) in the sense of the consolidated version of Council Directive 67/548/EEC Annex V, Method A.16.
- Executive summary:
The relative self-ignition temperature of the technical calcium carbide was determined in accordance with the consolidated version of Council Directive 67/548/EEC Annex V, Part A: Methods for the determination of physico-chemical properties. A.16. Auto-flammability (solids - determination of relative self-ignition temperature).
A very slow exothermal reaction of the test item occurred at a temperature of approximately 140 °C and led to a temperature of 411 °C. A maximum temperature difference of 25 K between the test item and the oven-temperature was observed. The temperature of the test item exceeded 400 °C at a corresponding oven temperature of 390 °C.
Thus, the relative self-ignition temperature is 390 °C, according to the testing guideline for autoflammability (solids - determination of relative self-ignition temperature) in the sense of the consolidated version of Council Directive 67/548/EEC Annex V, Method A.16.
Reference
Results
A very slow exothermal reaction of the test item occurred at a temperature of approximately 140 °C and led to a temperature of 411 °C. A maximum temperature difference of 25 K between the test item and the oven-temperature was observed.
The temperature of the test item exceeded 400 °C at a corresponding oven temperature of 390 °C.
Description of key information
The self-ignition temperature of calcium carbide was determined to be 390 °C (method EU A.16).
Key value for chemical safety assessment
- Autoflammability / Self-ignition temperature at 101 325 Pa:
- 390 °C
Additional information
The relative self-ignition temperature of technical calcium carbide was determined in accordance with the consolidated version of Council Directive 67/548/EEC Annex V, Part A: Methods for the determination of physico-chemical properties. A.16. Auto-flammability (solids - determination of relative self-ignition temperature).
A very slow exothermal reaction of the test item occurred at a temperature of approximately 140 °C and led to a temperature of 411 °C. A maximum temperature difference of 25 K between the test item and the oven-temperature was observed. The temperature of the test item exceeded 400 °C at a corresponding oven temperature of 390 °C.
Thus, the relative self-ignition temperature is 390 °C, according to the testing guideline for autoflammability (solids - determination of relative self-ignition temperature) in the sense of the consolidated version of Council Directive 67/548/EEC Annex V, Method A.16.
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