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EC number: 219-784-2 | CAS number: 2530-83-8
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:
- 2019-05-06
- 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:
- yes
- Remarks:
- For EC A.15. test, the empty part (gaseous phase of the test item) of the flask exceeded 15% of its total capacity. This deviation was not considered to have affected the quality or the interpretation of the results obtained
- GLP compliance:
- yes (incl. QA statement)
- Key result
- Auto-ignition temperature:
- 236 °C
- Atm. press.:
- ca. 97.7 - ca. 98.4 kPa
- Conclusions:
- An auto flammability value of 236 °C ± 3°C at 97.7 to 98.4 kPa was determined using a relevant test method and in compliance with GLP. The result is considered to be reliable.
Reference
Results
Preliminary test
Injection No. |
Volume of test item injected in the oven (µL) |
Temperature (°C) |
Auto-ignition |
Maximal temperature of the air recorded in the center of the test flask after auto-ignition (°C) |
Atm pressure (kPa) |
Relative humidity (%) |
|||
Observed |
Corrected |
Y / N |
Lag (s) |
Observed |
Corrected |
||||
1 |
70 |
98 |
98 |
N |
/ |
/ |
/ |
98.2 |
34 |
2 |
70 |
149 |
149 |
N |
/ |
/ |
/ |
98.2 |
32 |
3 |
70 |
199 |
199 |
N |
/ |
/ |
/ |
98.2 |
30 |
4 |
70 |
246 |
246 |
Y |
17 |
264 |
264 |
98.1 |
28 |
5 |
70 |
225 |
225 |
N |
/ |
/ |
/ |
98.3 |
44 |
6 |
70 |
234 |
234 |
N |
/ |
/ |
/ |
96.2 |
44 |
7 |
07 |
240 |
240 |
N |
/ |
/ |
/ |
96.2 |
41 |
8 |
70 |
243 |
243 |
N |
/ |
/ |
/ |
96.1 |
39 |
9 |
90 |
243 |
243 |
Y |
16 |
263 |
263 |
96.1 |
38 |
10 |
110 |
243 |
243 |
Y |
16 |
247 |
247 |
96.1 |
36 |
11 |
130 |
243 |
243 |
Y |
13 |
261 |
261 |
96.1 |
37 |
12 |
150 |
243 |
243 |
Y |
15 |
260 |
260 |
98.6 |
38 |
13 |
90 |
240 |
240 |
N |
/ |
/ |
/ |
98.6 |
36 |
14 |
90 |
241 |
241 |
N |
/ |
/ |
/ |
98.5 |
36 |
15 |
110 |
241 |
241 |
Y |
16 |
259 |
259 |
98.5 |
35 |
16 |
110 |
239 |
239 |
Y |
25 |
257 |
257 |
98.3 |
37 |
17 |
110 |
237 |
237 |
N |
/ |
/ |
/ |
98.2 |
35 |
18 |
130 |
237 |
237 |
N |
/ |
/ |
/ |
98.2 |
35 |
19 |
150 |
237 |
237 |
Y |
34 |
253 |
253 |
98.2 |
36 |
20 |
150 |
235 |
235 |
N |
/ |
/ |
/ |
98.1 |
36 |
21 |
170 |
235 |
235 |
Y |
30 |
251 |
251 |
98.1 |
36 |
22 |
170 |
233 |
233 |
N |
/ |
/ |
/ |
98.0 |
36 |
23 |
190 |
233 |
233 |
N |
/ |
/ |
/ |
97.8 |
37 |
24 |
190 |
235 |
235 |
N |
/ |
/ |
/ |
97.8 |
37 |
The lowest auto-ignition temperature was found to be around 235 °C (observed value) with a volume of 170 µL.
The main test was conducted using this volume.
Main test
Volume of test item injected in the oven: 170 µL
Assay No. 1
Injection No. |
Temperature (°C) |
Auto-ignition |
Lag (s) |
Maximal temperature of the air recorded in the center of the test flask after auto-ignition (°C) |
Atmospheric pressure (kPa) |
Relative humidity (%) |
||
Observed |
Corrected |
Observed |
Corrected |
|||||
1 |
235 |
235 |
N |
/ |
/ |
/ |
97.8 |
38 |
2 |
236 |
236 |
Y |
34 |
250 |
250 |
97.7 |
35 |
Assay No. 2
Injection No. |
Temperature (°C) |
Auto-ignition |
Lag (s) |
Maximal temperature of the air recorded in the center of the test flask after auto-ignition (°C) |
Atmospheric pressure (kPa) |
Relative humidity (%) |
||
Observed |
Corrected |
Observed |
Corrected |
|||||
1 |
235 |
235 |
N |
/ |
/ |
/ |
97.7 |
34 |
2 |
236 |
236 |
Y |
23 |
252 |
252 |
97.7 |
34 |
Assay No. 3
Injection No. |
Temperature (°C) |
Auto-ignition |
Lag (s) |
Maximal temperature of the air recorded in the center of the test flask after auto-ignition (°C) |
Atmospheric pressure (kPa) |
Relative humidity (%) |
||
Observed |
Corrected |
Observed |
Corrected |
|||||
1 |
236 |
236 |
Y |
31 |
252 |
252 |
98.4 |
31 |
2 |
235 |
235 |
N |
/ |
/ |
/ |
98.4 |
31 |
Assay No. 4
Injection No. |
Temperature (°C) |
Auto-ignition |
Lag (s) |
Maximal temperature of the air recorded in the center of the test flask after auto-ignition (°C) |
Atmospheric pressure (kPa) |
Relative humidity (%) |
||
Observed |
Corrected |
Observed |
Corrected |
|||||
1 |
235 |
235 |
N |
/ |
/ |
/ |
98.4 |
30 |
2 |
236 |
236 |
N |
/ |
/ |
/ |
98.4 |
26 |
3 |
237 |
237 |
Y |
25 |
254 |
254 |
98.4 |
27 |
Assay No. 5
Injection No. |
Temperature (°C) |
Auto-ignition |
Lag (s) |
Maximal temperature of the air recorded in the center of the test flask after auto-ignition (°C) |
Atmospheric pressure (kPa) |
Relative humidity (%) |
||
Observed |
Corrected |
Observed |
Corrected |
|||||
1 |
236 |
236 |
Y |
26 |
253 |
253 |
98.4 |
26 |
2 |
235 |
235 |
N |
/ |
/ |
/ |
98.4 |
25 |
Summary
Only the auto-ignition runs for each assay are summarised in the following table:
|
Auto-ignition temperature (°C) |
Auto-ignition Lag (s) |
Maximal temperature of the air recorded in the center of the test flask after ignition (°C) |
Atmospheric pressure (kPa) |
Relative humidity (%) |
||
Assay No. |
Observation |
Corrected |
Observed |
Corrected |
|||
1 |
236 |
236 |
34 |
250 |
250 |
97.7 |
35 |
2 |
236 |
236 |
23 |
252 |
252 |
97.7 |
34 |
3 |
236 |
236 |
31 |
252 |
252 |
98.4 |
31 |
4 |
237 |
237 |
25 |
254 |
254 |
98.4 |
27 |
5 |
236 |
236 |
26 |
253 |
253 |
98.4 |
25 |
Conclusion
The auto-ignition temperature of the test item was 236 °C ± 3 °C (corrected temperature).
Description of key information
Auto-ignition temperature: 236°C at 97.7 to 98.4 kPa (EU Method A.15)
Key value for chemical safety assessment
- Autoflammability / Self-ignition temperature at 101 325 Pa:
- 236 °C
Additional information
An auto-ignition temperature value of 236 ± 3°C at 97.7 to 98.4 kPa was determined using a relevant test method and in compliance with GLP. The result is considered to be reliable and has been selected as the key study.
In a supporting study, an auto-ignition temperature value of 243°C at 961.4 to 969.5 hPa was determined using a relevant test method and in compliance with ISO 9001:2008.
In a secondary source to which reliability could not be assigned, an auto-ignition temperature value of 400°C was reported for the substance.
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