Registration Dossier
Registration Dossier
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EC number: 283-298-7 | CAS number: 84604-20-6 Extractives and their physically modified derivatives such as tinctures, concretes, absolutes, essential oils, oleoresins, terpenes, terpene-free fractions, distillates, residues, etc., obtained from Silybum marianum, Compositae.
Auto flammability
Administrative data
Link to relevant study record(s)
- Endpoint:
- auto-ignition temperature (liquids)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 16 July 2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Key result
- Auto-ignition temperature:
- > 400 °C
- Atm. press.:
- 97.5 kPa
- Remarks on result:
- other: no auto-ignition temperature up to 400 °C
- Conclusions:
- The auto-ignition temperature is the lowest temperature of the inner surface of an enclosure that results in ignition of a gas, vapour or liquid injected into the enclosure. The objective of this study was to determine the auto-ignition temperature of the test item in air at atmospheric pressure. A small sample of the test item was inserted into an uniformly heated 500 mL glass flask containing air at a predetermined temperature. The lowest temperature at which hot-flame ignition occurs for a series of prescribed sample volumes was taken to be the hot-flame auto-ignition temperature of the chemical.
The measured auto-ignition temperature of Extract of Chardon marie without support was: no auto-ignition temperature up to 400 °C.
Reference
Temperature was measured in case of each experiment at the outside and inside of the flask. The temperature distribution was steady outside the flask.
The ignition delay time was determined when ignition was observed.
The test was carried out at 97.5 kPa atmospheric pressure.
Determination of auto-ignition temperature of test item
Temperature |
External Temperature |
Ignition |
Sample amount |
Ignition delay time |
|
230 °C |
234 °C |
- |
100 µL |
- |
|
303 °C |
307 °C |
- |
100 µL |
- |
|
399 °C |
404 °C |
- |
100 µL |
- |
|
400 °C |
404 °C |
- |
200 µL |
- |
|
- - not ignited - + ignited |
|
||||
The measured auto-ignition temperature of the test item was: no auto-ignition temperature up to 400 °C.
Description of key information
The measured auto-ignition temperature of Extract of Chardon marie without support was: no auto-ignition temperature up to 400 °C.
Key value for chemical safety assessment
Additional information
The auto-ignition temperature is the lowest temperature of the inner surface of an enclosure that results in ignition of a gas, vapour or liquid injected into the enclosure. The objective of this study was to determine the auto-ignition temperature of the test item in air at atmospheric pressure. A small sample of the test item was inserted into an uniformly heated 500 mL glass flask containing air at a predetermined temperature. The lowest temperature at which hot-flame ignition occurs for a series of prescribed sample volumes was taken to be the hot-flame auto-ignition temperature of the chemical.
The measured auto-ignition temperature of Extract of Chardon marie without support was: no auto-ignition temperature up to 400 °C.
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