reaction mass of [(1R*,5S*)-3,3,5-trimethylcyclohexyl] acetate and [(1S*,5S*)-3,3,5-trimethylcyclohexyl] acetate

Auto flammability

Link to relevant study record(s)

Reference

Endpoint:

auto-flammability

Type of information:

experimental study

Adequacy of study:

key study

Study period:

27-Oct-2014 to 29-Oct-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 51794 (2003): Determination of Ignition Temperature

GLP compliance:

no

Key result

Auto-ignition temperature:

355 °C

Atm. press.:

1 006.7 hPa

Remarks on result:

other:

Results

Preliminary test

An approximate value of the ignition temperature of the test item was first determined in a preliminary test. Results are given in the table below. An “ignition” is indicated by + and “no ignition” by -. Five drops were added into the Erlenmeyer flask at each temperature.

 

Results of the preliminary test

Temperature / °C	Ignition + / -
182	-
235	-
258	-
299	-
308	-
322	-
324	-
354	-
380	+

Atmospheric pressure: 1008.3 – 1013.6 hPa

 

In the preliminary test, the lowest temperature at which an ignition occurred was 380 °C.

 

Main test

The results of the three test series are given in the following tables. An “ignition” is indicated by + and “no ignition” by -.

 

Results of first main test series

1st main test series			1st main test series (cont.)
Temperature / °C	Droplets	Ignition	Temperature / °C	Droplets	Ignition
380	5	+	364	7	-
378	5	+	363	6	-
376	5	+	363	4	+
374	5	+	360	4	-
371	5	+	361	5	-
366	5	+	362	6	-
360	5	-	360	7	-
363	5	-	361	8	-
363	10	-	360	9	-
364	3	-	361	10	-
364	9	-	361	3	-
363	8	-	362	2	-
/	/	/	361^1)	1	-
Atmospheric pressure = 1005.3 hPa			Atmospheric pressure = 1006.0 hPa ^1)Atmospheric pressure = 1006.3 hPa

 

Results of second and third main test series

2nd main test series			3rd main test series
Temperature / °C	Droplets	Ignition	Temperature / °C	Droplets	Ignition
365	5	+	365	5	+
362	4	-	363	5	-
362	5	-	363	4	+
363	6	-	360	5	+
362	7	+	358	5	-
359	7	-	357	4	-
359	8	-	358	7	-
359	9	-	357	10	-
359	10	-	357	9	-
360	6	-	358	8	-
358	5	-	358	6	-
359	4	-	357	3	-
359	3	-	357	2	-
360	2	-	357	1	-
360	1	-	/	/	/
Atmospheric pressure = 1006.4 hPa			Atmospheric pressure = 1006.7 hPa

 

The lowest temperatures at which an ignition occurred in the main test are given in the following table.

 

Results of third test series

Main test series	Lowest temperatures of an ignition	Highest temperatures without an ignition	Atmospheric Pressure
1	363 °C	362 °C	1005.3 – 1006.3 hPa
2	362 °C	360 °C	1006.4 hPa
3	360 °C	358 °C	1006.7 hPa

Atmospheric pressure = 1006.1 hPa

 

According to observations in the three test series the auto-ignition temperature rounded down with an accuracy of 5 °C was determined to be 355 °C.

 

Final results

The test item has an auto-ignition temperature of 355 °C according to Regulation EC No. 440/2008 Method A.15 Auto-Ignition Temperature (Liquids and Gases) and DIN 51794 (2003): Determination of Ignition Temperature.

Conclusions:

An auto-ignition temperature value of 355 °C (at 1006.7 hPa) was determined for the test substance according to E.U. Method A.15.

Description of key information

Auto-ignition temperature: 355 °C at 1006.7 hPa (EU Method A.15)