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Auto flammability

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Reference
Endpoint:
auto-ignition temperature (liquids)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2011-11-23 to 2011-11-25
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))
Version / remarks:
May 31, 2008
Deviations:
no
Qualifier:
according to
Guideline:
DIN 51794 (Testing of mineral oil hydrocarbons - Determination of ignition temperature)
Version / remarks:
May 2003
Deviations:
no
Qualifier:
according to
Guideline:
IEC 60079-4 (Electrical apparatus for explosive gas atmospheres. Part 4: Method of test for ignition temperature)
Version / remarks:
1975
Deviations:
no
GLP compliance:
yes
Key result
Auto-ignition temperature:
380 °C
Atm. press.:
1 024.1 - 1 030.7 hPa

Preliminary study result:

Estimated auto ignition temperature was 410°C.

Main study result:

The result of the main study are shown in Table 2. Ignition of the test substance within 5 minutes after introduction was observed with each sample volume and with each test a minimum auto-ignition temperature was obtained. The maximum deviation between the three values was < 20°C.

The lowest temperature at which ignition of the test substance occurred was 380°C. This temperature was a multiple of 5°C and therefore given as the auto-ignition temperature of the test substance.

Table 2: Main study: auto-ignition temperature of the test substance

Test

Volume [µl]

Auto ignition temperature [°C]

Ignition delay [s]

Colour of flame

Minimum auto ignition temperature [°C]

1

70

230

400

410

380

390

6

9

8

Orange/blue

Orange/blue

Orange/blue

380

2

120

170

350

389

382

386

6

8

11

Orange/blue

Orange/blue

Orange/blue

382

3

90

270

380

398

381

389

6

11

9

Orange/blue

Orange/blue

Orange/blue

381

Conclusion

Commercially available auto-ignition temperature apparatus was used for the determination of the degree of auto-ignitability of 3-(trimethoxysilyl)propiononitrile.

The test substance is auto-ignitable with an auto-ignition temperature at 1024.1 – 1030.7 hPa of 380°C

Conclusions:
A minimum auto-ignition temperature of 380°C at 1024.1 – 1030.7 hPa was determined for the substance in accordance with an appropriate test method and in compliance with GLP. The result is considered to be reliable.

Description of key information

Auto-ignition temperature: 380°C at 1024.1 to 1030.7hPa (DIN 51794)

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
380 °C

Additional information

An auto-ignition temperature value of 380°C at 1024.1 to 1030.7 hPa was determined for the substance using a relevant test method and in compliance with GLP. The result is considered to be reliable.