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Physical & Chemical properties

Auto flammability

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Link to relevant study record(s)

Reference
Endpoint:
auto-flammability
Type of information:
experimental study
Adequacy of study:
key study
Study period:
09 Jun to 28 Jul 2015
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 51794 (2003)
GLP compliance:
yes (incl. QA statement)
Remarks:
Gute Laborpraxis/Good Laboratory Practice GLP-Bescheiningung/Statement of GLP Compliance (gemäß/according to § 19b Abs. 1 Chemikaliengesetz)
Auto-ignition temperature:
255 °C
Atm. press.:
999 hPa
Remarks on result:
other:

Results

Preliminary test

test no.

sample volume

[µl]

barometric pressure [mbar]

T

[°C]

ignition delay

[s]

test result

1

150

1002

300

1

ignition

2

150

1002

280

9

ignition

3

150

1002

260

-

no ignition

4

150

1002

265

31

ignition

5

150

1002

263

-

no ignition

Result value from preliminary test series:  ignition: 265 °C, no ignition: 263 °C

 

First main test series

test no.

sample volume

[µl]

barometric pressure [mbar]

T

[°C]

ignition delay

[s]

test result

1

150

1007

265

31

ignition

2

150

1007

260

-

no ignition

3

300

1007

260

112

ignition

4

300

1007

255

-

no ignition

5

300

1007

257

-

no ignition

6

400

1007

257

-

no ignition

7

200

1007

257

-

no ignition

 

Results first main test series: ignition: 260 °C, no ignition: 257 °C

 

Second main test series

 test no.

sample volume

[µl]

barometric pressure [mbar]

T

[°C]

ignition delay

[s]

test result

1

300

1005

260

108

ignition

2

300

1005

255

104

ignition

3

300

1005

254

400

ignition

4

300

1005

252

-

no ignition

5

400

1005

252

-

no ignition

6

200

1005

252

-

no ignition

7

150

1005

252

-

no ignition

8

300

1005

252

-

no ignition

 

Results second main test:  ignition: 257 °C, no ignition: 252 °C

 

Retest

test no.

sample volume

[µl]

barometric pressure [mbar]

T

[°C]

ignition delay

[s]

test result

1

300

1005

260

99

ignition

2

300

1005

257

95

ignition

3

300

1005

255

-

no ignition

4

200

1005

255

-

no ignition

5

400

1005

255

-

no ignition

6

500

1005

255

-

no ignition

7

300

1005

255

-

no ignition

8

150

1005

255

-

no ignition

 

Results retest:  ignition: 257 °C, no ignition: 255 °C

 

Evaluation

lowest value from pretest:

265 °C

lowest value for first main test:

260 °C

lowest value for second main test:

254 °C

lowest value for retest:

257 °C

 

Lowest value of all main test/retest series: 254 °C.

Correction of the temperature according to the last DKD calibration (10/062014) of the temperature measurement chain (thermocouple + monitor) is already considered (value of -0.5 °C).

 

Concluding Result

 

The auto-ignition temperature is 250 °C (according to the assessment criteria and definition in the Council Regulation (EC) No 440/2008, test method A.15.

 

Conclusions:
An auto-ignition temperature of 255°C at 999 hPa was determined in a reliable study conducted according to an appropriate test protocol.

Description of key information

Trichloro(octadecyl)silane: 255°C at 999 hPa (measured)

Key value for chemical safety assessment

Additional information

An auto-ignition temperature of 255°C (999 hPa) was determined according to EU Method A.15.