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EC number: 274-936-5 | CAS number: 70851-50-2
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:
- 15 Jul to 23 Jul 2014
- 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))
- Qualifier:
- according to guideline
- Guideline:
- other: DIN 14522, Method S
- GLP compliance:
- no
- Auto-ignition temperature:
- 237 °C
- Atm. press.:
- ca. 960 hPa
- Remarks on result:
- other:
- Conclusions:
- An auto-ignition temperature of 237°C was determined in a reliable study conducted according to an appropriate test protocol.
Reference
Results
Preliminary test
No. |
Test temperature [°C] |
Number of sample drops |
Result concerning ignition [negative (-) / positive (+)] |
Atmospheric pressure [hPa] |
1 |
215.1 |
5 |
- |
963.1 |
2 |
243.4 |
5 |
- |
|
3 |
265.2 |
5 |
- |
|
4 |
287.7 |
5 |
- |
|
5 |
291.0 |
5 |
+ |
Lowest test temperature = 291.0°C
Test Series 1
No. |
Test temperature [°C] |
Number of sample drops |
Result concerning ignition [negative (-) / positive (+)] |
Atmospheric pressure [hPa] |
1 |
286.0 |
5 |
- |
970.0 |
2 |
286.0 |
1 |
- |
|
3 |
286.0 |
9 |
- |
|
4 |
286.0 |
13 |
+ |
|
5 |
281.0 |
13 |
+ |
|
6 |
276.0 |
13 |
+ |
|
7 |
271.0 |
13 |
+ |
|
8 |
266.0 |
13 |
+ |
|
9 |
261.0 |
13 |
+ |
970.0 |
10 |
256.0 |
13 |
+ |
|
11 |
251.0 |
13 |
+ |
|
12 |
246.0 |
13 |
+ |
|
13 |
241.0 |
13 |
- |
969.4 |
14 |
241.0 |
9 |
- |
|
15 |
241.0 |
5 |
- |
|
16 |
241.0 |
1 |
- |
|
17 |
241.0 |
17 |
- |
|
18 |
244.0 |
13 |
+ |
|
19 |
242.0 |
13 |
- |
|
20 |
242.0 |
9 |
- |
|
21 |
242.0 |
5 |
- |
|
22 |
242.0 |
1 |
- |
|
23 |
242.0 |
17 |
- |
Lowest test temperature = 244 °C
Test Series 2
No. |
Test temperature [°C] |
Number of sample drops |
Result concerning ignition [negative (-) / positive (+)] |
Atmospheric pressure [hPa] |
1 |
291.0 |
13 |
+ |
959.7 |
2 |
286.0 |
13 |
+ |
|
3 |
281.0 |
10 |
+ |
|
4 |
276.0 |
10 |
+ |
|
5 |
271.0 |
10 |
+ |
|
6 |
266.0 |
10 |
+ |
|
7 |
261.0 |
10 |
+ |
|
8 |
256.0 |
10 |
+ |
|
9 |
251.0 |
10 |
+ |
|
10 |
246.0 |
10 |
+ |
|
11 |
241.0 |
10 |
- |
|
12 |
241.0 |
6 |
- |
|
13 |
241.0 |
2 |
- |
|
14 |
241.0 |
14 |
- |
|
15 |
241.0 |
18 |
+ |
|
16 |
236.0 |
18 |
- |
960.8 |
17 |
236.0 |
14 |
- |
|
18 |
236.0 |
10 |
- |
|
19 |
236.0 |
6 |
- |
|
20 |
236.0 |
2 |
- |
|
21 |
239.0 |
18 |
- |
|
22 |
239.0 |
14 |
- |
|
23 |
239.0 |
10 |
- |
|
24 |
239.0 |
6 |
- |
|
25 |
239.0 |
2 |
- |
Lowest test temperature = 241 °C
Test Series 3
No. |
Test temperature [°C] |
Number of sample drops |
Result concerning ignition [negative (-) / positive (+)] |
Atmospheric pressure [hPa] |
1 |
246.0 |
18 |
- |
964.3 |
2 |
246.0 |
14 |
- |
|
3 |
246.0 |
10 |
+ |
|
4 |
241.0 |
10 |
- |
|
5 |
241.0 |
6 |
- |
|
6 |
241.0 |
2 |
- |
|
7 |
241.0 |
14 |
- |
|
8 |
241.0 |
18 |
- |
|
9 |
244.0 |
10 |
- |
|
10 |
244.0 |
6 |
- |
|
11 |
244.0 |
2 |
- |
|
12 |
244.0 |
14 |
- |
|
13 |
244.0 |
18 |
- |
--
Lowest test temperature = 246°C
Summary
Parameter |
Value |
Lowest value of test series 1: |
244°C |
Lowest value of test series 2: |
241°C |
Lowest value of test series 3: |
246°C |
Lowest value of all test series |
241°C |
Absolute deviation of the lowest value (1.5%) |
3.6°C |
Auto-ignition temperature: 237°C
Remarks
According to DIN EN 14522 the lowest value of all test series (241°C) was reduced by the deviation value based on the precision of the method (rel. 1.5% = 3.6°C). The resulting value was rounded to the next integral number (237°C).
Description of key information
Dimethoxymethyloctadecylsilane: 237°C
Key value for chemical safety assessment
- Autoflammability / Self-ignition temperature at 101 325 Pa:
- 237 °C
Additional information
An auto-ignition temperature of 237°C (1013 hPa) was determined according to EU Method A.15.
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