Registration Dossier
Registration Dossier
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EC number: 242-472-2 | CAS number: 18643-08-8
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:
- 11 Jun to 25 Jun 2015
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Justification for type of information:
- At standard conditions (20 °C) the test substance is solid. The melting temperature is 25.7°C, therefore determination of the auto-ignition temperature is considered valid.
- 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:
- 241 °C
- Atm. press.:
- 968 hPa
- Conclusions:
- An auto-ignition temperature of 241°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 |
274.4 |
5 |
- |
968 |
2 |
303.1 |
5 |
- |
|
3 |
323.7 |
5 |
- |
|
4 |
346.4 |
5 |
- |
|
5 |
349.7 |
5 |
+ |
Lowest test temperature = 349.7°C
Test Series 1
Lowest test temperature = 245°C
Atmospheric pressure = 968 hPa
Test Series 2
Lowest test temperature = 245 °C
Atmospheric pressure = 966 hPa
Test Series 3
Lowest test temperature = 246°C
Atmospheric pressure = 970 hPa
Summary
Parameter |
Value |
Lowest value of test series 1 |
245°C |
Lowest value of test series 2 |
245°C |
Lowest value of test series 3 |
246°C |
Absolute value of all test series |
245°C |
Absolute deviation of the lowest value (1.5%) |
3.7°C |
Auto-ignition temperature: 241°C
Remarks
According to DIN EN 14522 the lowest value of all test series (245°C) was reduced by the deviation value based on the precision of the method (rel. 1.5% = 3.7°C). The resulting value was rounded to the next integral number (241°C).
At standard conditions (20 °C) the test substance is solid. The melting temperature is 25.7°C (see Wacker Final Report N-0002134136-P). Therefore the solid test substance is first heated to 65 °C and then applied as liquid for the auto-ignition test.
Description of key information
Chlorodimethyloctadecylsilane: 241°C (EU Method A.15)
Key value for chemical safety assessment
- Autoflammability / Self-ignition temperature at 101 325 Pa:
- 241 °C
Additional information
An auto-ignition temperature of 241°C (1013 hPa) was determined according to EU Method A.15.
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