Dimethyl(octyl)amine

Auto flammability

Link to relevant study record(s)

Reference

Endpoint:

auto-flammability

Type of information:

experimental study

Adequacy of study:

key study

Study period:

26 November 2015 - 16 March 2016

Reliability:

1 (reliable without restriction)

Qualifier:

according to guideline

Guideline:

EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))

Deviations:

no

Qualifier:

according to guideline

Guideline:

other: DIN 51794 (2003)

Deviations:

not specified

Qualifier:

according to guideline

Guideline:

other: DIN EN 14522 (2005)

Deviations:

not specified

GLP compliance:

yes (incl. QA statement)

Auto-ignition temperature:

205 °C

Atm. press.:

1 017.9 hPa

Remarks on result:

other: Pretest

Auto-ignition temperature:

197 °C

Atm. press.:

1 020.7 hPa

Remarks on result:

other: Main test series 1 Lowest temperature of an ignition

Auto-ignition temperature:

195 °C

Atm. press.:

1 020.7 hPa

Remarks on result:

other: Main test series 1 Highest temperature without an ignition

Auto-ignition temperature:

199 °C

Atm. press.:

1 023.7 hPa

Remarks on result:

other: Main test series 2 Lowest temperature of an ignition

Auto-ignition temperature:

197 °C

Atm. press.:

1 023.7 hPa

Remarks on result:

other: Main test series 2 Highest temperature without an ignition

Auto-ignition temperature:

200 °C

Atm. press.:

1 024.3 hPa

Remarks on result:

other: Main test series 3 Lowest temperature of an ignition

Auto-ignition temperature:

199 °C

Atm. press.:

1 024.3 hPa

Remarks on result:

other: Main test series 3 Highest temperature without an ignition

Results

1.1                       Preliminary Test

An approximate value of the ignition temperature of the test item was first determined by a preliminary test.Table 1gives the result of the preliminary test. An ignition is denoted as “+” and no ignition is denoted as “-“. 5 drops were put into the Erlenmeyer flask at each temperature.

Table1: Results of the preliminary test

	Preliminary Test
Temperature / °C	216	201	206
Ignition / +/-	+	-	+
Atmospheric pressure / hPa:	1017.9 hPa

In the preliminary test, the lowest temperature at which an ignition occurred was 205 °C.

1.2                       Main Test

The results of the main test are given in the following Tables 2 and 3. An ignition is denoted as “+” and no ignition is denoted as “-“.

Table2:    Determination of the first and second main test series

1^stMain test series			2^ndMain test series
Temperature / °C	Droplets	Ignition	Temperature / °C	Droplets	Ignition
205	5	-	199	10	+
204	10	+	196	10	-
201	10	+	197	9	-
198	10	+	196	8	-
192	10	-	196	7	-
197	10	+	197	6	-
195	10	-	197	5	-
194	9	-	197	4	-
194	8	-	197	3	-
195	7	-	197	2	-
195	6	-	197	1	-
194	5	-
194	4	-
194	3	-
194	2	-
194	1	-
Atmospheric pressure: 1020.7 hPa			Atmospheric pressure: 1023.7 hPa

Table3:    Determination of the third main test series

3^rdMain test series
Temperature / °C	Droplets	Ignition
199	10	-
200	10	+
198	10	-
198	9	-
197	8	-
198	7	-
197	6	-
199	5	-
198	4	-
198	3	-
197	2	-
198	1	-
Atmospheric pressure: 1024.3 hPa

The lowest temperatures at which an ignition occurred in the main test are given in Table 4.

Table4:    Lowest temperatures at which an ignition occurred

Main test series	Lowest temperatures of an ignition	Highest temperatures without an ignition	Atmospheric Pressure
1	197 °C	195 °C	1020.7 hPa
2	199 °C	197 °C	1023.7 hPa
3	200 °C	199 °C	1024.3 hPa

Based on results of the main test series, the lowest auto-ignition temperature was 197 °C.

Regulation EC No. 440/2008 and DIN 51794: The auto-ignition temperature rounded down to the nearest multiple of 5 °C was determined as 195 °C

DIN EN 14522: The auto-ignition temperature reduced by 1.5 % and rounded to the nearest integer temperature was determined as 193 °C

Conclusions:

The test item N,N-Dimethyloctan-1-amine has an auto-ignition temperature of 195 °C according to the Regulation EC No. 440/2008 Method A.15. Auto-Ignition Temperature (Liquids and Gases) and DIN 51794 (2003).

According to DIN EN 13463-1 the test item has to be assigned to temperature class T4. T4 Temperature class (Maximum surface temperature/minumum auto ignition temperature [°C])= 135

Executive summary:

Report: Hernandez, C.(2016): N,N-Dimethyloctan-1-amine Determination of physico-chemical properties Auto-Ignition Temperature (Liquids and Gases) (EC A.15.)

Source: consilab Gesellschaft für Anlagensicherheit mbH, Industriepark Höchst, G830/G840, 65926 Frankfurt am Main, Germany;

unpublished Report: CSL-15 -1314.03; Eurofins Study-No. S15 -05596

Guidelines: EC A.15, DIN 51794 (2003) and DIN EN 14522 (2005)

Deviations: no

GLP: yes (incl. certificate)

Materials and Methods: The test determines the lowest temperature at which a gas/air- or vapour/air-mixture of flammable test item ignites in contact with a hot surface.

Study period: 26 November 2015 - 16 March 2016

Results: The test item N,N-Dimethyloctan-1-amine has an auto-ignition temperature of 195 °C according to the Regulation EC No. 440/2008 Method A.15.Auto-Ignition Temperature (Liquids and Gases) and DIN 51794 (2003): Determination of Ignition Temperature.

It is noted here that according to ECHA guidance – Guidance on information requirements and chemical safety assessment; chapter R.7A: Endpoint specific guidance, May 2008 – the auto-ignition temperature for liquids is not used directly for classification and labeling according to Regulation (EC) 1272/2008. However, it can be used in the chemical safety assessment in considering risks associated with processing the substance.

According to DIN EN 13463-1 the test item has to be assigned to temperature class T4 (see the following Table 5).

Table 5:    Temperature classes

Temperature class	Maximum surface temperature / minimum auto ignition temperature [°C]
T1	450
T2	300
T3	200
T4	135
T5	100
T6	85

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:

195 °C