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Diss Factsheets

Physical & Chemical properties

Auto flammability

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Endpoint:
auto-ignition temperature (liquids)
Type of information:
read-across based on grouping of substances (category approach)
Adequacy of study:
key study
Justification for type of information:
For details on endpoint-specific justification, please see read-across justification document (category approach) in the linked category of dimethylalkylamines.
Key result
Auto-ignition temperature:
235 °C
Atm. press.:
1 006 hPa
Remarks on result:
other: RA from C12-14-DMA

Auto-flammability (Determination of the Temperature of Self-ignition of Volatile Liquids and Gases)

Preliminary test:The lowest auto-ignition temperature was determined to be 236 °C.

Main test: The following table shows the results of the three principal tests: Temperatures, where auto-ignition (+) was detected and where not (-). The amount of test item tested at each measurement is indicated as numbers of drops.

  

1. principal test

T / °C

drops

+ / -

237

5

+

252

5

-

232

10

-

232

1

-

232

8

-

232

2

-

232

7

-

232

3

-

232

6

-

232

4

-

232

9

-

232

11

-

barometric pressure: 1006.2 hPa

2. principal test

3. principal test

T / °C

drops

+ / -

T / °C

 

drops

+ / -

 

237

5

+

237

5

+

232

5

-

232

5

-

232

10

-

232

10

-

232

1

-

232

1

-

232

8

-

232

8

-

232

2

-

232

2

-

232

7

-

232

7

-

232

3

-

232

3

-

232

6

-

232

6

-

232

4

-

232

4

-

232

9

-

232

9

-

232

11

-

232

11

-

barometric pressure: 1006.2 hPa

barometric pressure: 1007.0 hPa

The auto-ignition temperature of the test item is 235°C.

Executive summary:

The study used as source investigated the auto-ignition temperature of C12-14-DMA. The study results of the source substance were considered applicable to the target substance. Justification and applicability of the read-across approach (category approach) is outlined in the read-across report in the linked category of dimethylalkylamines.

Endpoint:
auto-ignition temperature (liquids)
Type of information:
read-across based on grouping of substances (category approach)
Adequacy of study:
key study
Justification for type of information:
For details on endpoint-specific justification, please see read-across justification document (category approach) in the linked category of dimethylalkylamines.
Key result
Auto-ignition temperature:
255 °C
Atm. press.:
1 008 hPa
Remarks on result:
other: Read-across from C18-DMA

Auto-flammability (Determination of the Temperature of Self-ignition of Volatile Liquids and Gases)

Preliminary test: The lowest auto-ignition temperature was determined to be 273 °C.

Main test: The following table shows the results of the three principal tests. Temperatures, where auto-ignition (+) was detected and where not (-). The amount of test item tested at each measurement is indicated as numbers of drops.

  

1. principal test

1. principal test (cont.)

T / °C

drops

+ / -

T / °C

 

drops

+ / -

 

273

5

+

258

6

-

268

5

+

258

4

-

263

5

-

258

9

-

263

10

+

258

5

-

253

10

-

258

11

-

253

1

-

258

1

-

258

10

-

258

8

-

258

1

-

258

12

-

258

8

-

---

---

---

258

2

-

---

---

---

258

7

-

---

---

---

258

3

-

---

---

---

barometric pressure: 1009.6 hPa

barometric pressure: 1009.6 hPa

2. principal test

3. principal test

T / °C

drops

+ / -

T / °C

 

drops

+ / -

 

263

10

-

263

10

+

263

10

+

258

10

+

258

10

-

253

10

-

258

1

-

253

1

-

258

8

-

253

8

-

258

2

-

253

2

-

258

7

-

253

7

-

258

3

-

253

3

-

258

6

-

253

6

-

258

4

-

253

4

-

258

9

-

253

9

-

258

5

-

253

5

-

barometric pressure: 1003.8 hPa

barometric pressure: 1010.5 hPa

The auto-ignition temperature of the test item is 255°C.

Executive summary:

The study used as source investigated the auto-ignition temperature of C18-DMA. The study results of the source substance were considered applicable to the target substance. Justification and applicability of the read-across approach (category approach) is outlined in the read-across report in the linked category of dimethylalkylamines.

Endpoint:
auto-ignition temperature (liquids)
Type of information:
read-across based on grouping of substances (category approach)
Adequacy of study:
key study
Justification for type of information:
For details on endpoint-specific justification, please see read-across justification document (category approach) in the linked category of dimethylalkylamines.
Key result
Auto-ignition temperature:
250 °C
Atm. press.:
1 007 hPa
Remarks on result:
other: RA from C16-DMA (Siemens 2011)

Auto-flammability (Determination of the Temperature of Self-ignition of Volatile Liquids and Gases)

Preliminary test: The lowest auto-ignition temperature was determined to be 258 °C.

Main test: The following table shows the results of the three principal tests. Temperatures, where auto-ignition (+) was detected and where not (-). The amount of test item tested at each measurement is indicated as numbers of drops.

  

1. principal test

2. principal test

T / °C

drops

+ / -

T / °C

 

drops

+ / -

 

258

5

+

262

5

+

252

5

-

257

5

+

252

6

-

253

5

-

252

3

-

253

3

-

252

10

-

253

2

-

252

2

-

253

7

-

252

4

-

252

1

-

252

1

-

252

4

+

252

7

-

248

5

-

252

5

-

247

4

-

252

9

-

247

6

-

252

8

-

247

3

-

barometric pressure: 1008.4 hPa

barometric pressure: 1007.8 hPa

 

2. principal test (cont.)

3. principal test

T / °C

drops

+ / -

T / °C

 

drops

+ / -

 

247

8

-

257

5

+

247

9

-

251

4

-

247

1

-

251

6

-

247

2

-

252

2

-

247

10

-

252

10

-

247

7

-

252

3

-

247

4

-

252

5

-

247

6

-

252

1

-

247

5

-

252

7

-

247

3

-

252

9

-

247

8

-

252

8

-

247

1

-

252

4

-

barometric pressure: 1007.4 hPa

barometric pressure: 1005.8 hPa

The auto-ignition temperature of the test item is 250°C.
Executive summary:

The study used as source investigated the auto-ignition temperature of C16-DMA. The study results of the source substance were considered applicable to the target substance. Justification and applicability of the read-across approach (category approach) is outlined in the read-across report in the linked category of dimethylalkylamines.

Endpoint:
auto-ignition temperature (liquids)
Type of information:
read-across based on grouping of substances (category approach)
Adequacy of study:
key study
Justification for type of information:
For details on endpoint-specific justification, please see read-across justification document (category approach) in the linked category of dimethylalkylamines.
Key result
Auto-ignition temperature:
255 °C
Atm. press.:
>= 992.4 - <= 994.3 hPa
Remarks on result:
other: RA from C16-DMA (NOTOX, 2010)

Main study - auto-ignition temperature of the test susbtance

The estimated auto-ignition temperature in the preliminary test was 270°C.

Test   Volume (µl)  Auto-ignition temp (ºC)  Ignition delay (s)  Colour of the flame  Minimum auto-ignition temp(ºC)
1  70  262 25 orange/blue  257
  140 257 40 orange/blue   
  200 258 27 orange/blue   
 2 50 262 25 orange/blue   261
100 261 16 orange/blue 
  150 262 19 orange/blue   
 3 125 260 15 orange/blue   255
250 255 25 orange/blue 
  300 258 18  orange/blue   

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 < 10°C. According to the guidelines, no further testing was required.

The lowest temperature at which ignition of the test substance occurred was 255°C, which is also the auto-ignition temperature if rounded down to the nearest 5°C.
Executive summary:

The study used as source investigated the auto-ignition temperature of C16-DMA. The study results of the source substance were considered applicable to the target substance. Justification and applicability of the read-across approach (category approach) is outlined in the read-across report in the linked category of dimethylalkylamines.

Description of key information

By read-across from C12-14-DMA, C16-DMA and C18-DMA (category approach, nearest neighbours), an auto-ignition temperature for C12-18-DMA of 235 °C at atmospheric pressure was derived.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
235 °C

Additional information

The auto-ignition temperature of C12-18-DMA was derived from the following source data (category approach, nearest neighbours) by read-across:


An auto-ignition temperature of the test item C18-DMA of 255 °C (at 1008 hPa) was determined according to EU method A.15 (Siemens, 2011).
An auto-ignition temperature of the test item C16-DMA of 255 °C (at 993 hPa) was determined according to EU method A.15, DIN method 51794 and IEC standard 79-4 (NOTOX, 2010).
An auto-ignition temperature of the test item C16-DMA of 250 °C (at 1007 hPa) was determined according to EU method A.15 (Siemens, 2011).
An auto-ignition temperature of the test item C12-14-DMA of 235 °C (at 1006 hPa) was determined according to EU method A.15 (Siemens, 2011).


The lowest temperature obtained from these four available studies was chosen as the key value for chemical safety assessment.


The study results of the source substances were considered applicable to the target substance. Justification and applicability of the read-across approach (category approach) is outlined in the read-across report in the linked category of dimethylalkylamines.