Trimethoxyoctadecylsilane

Auto flammability

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)

Additional information

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