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Auto flammability

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Reference
Endpoint:
auto-flammability
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Qualifier:
according to
Guideline:
EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))
Deviations:
not specified
Qualifier:
according to
Guideline:
other: DIN 51 794
Deviations:
not specified
GLP compliance:
yes
Specific details on test material used for the study:
- Name of test material (as cited in study report): n-Nonanal (nonyl aldehyde, pelargonaldehyde)
- Physical state: Colourless liquid
- Lot/batch No.: 20091103145756
- Expiration date of the lot/batch: > 6 months at room temeprature after receipt at AQuara (26th November 2009).
- Storage condition of test material: Cool; at room temperature between 0 and 49 °C, dry; handle under N2.
- Other:
Auto-ignition temperature:
195 °C
Atm. press.:
1 016 hPa

Result

Test No.

Temperature °C

Injected volume (drops)

Time-lag (s) until ignition

Test 1

215

5/10

-/8

210

10

16

205

10/15

-/28

200

15

40

195

15/20

-/-

198

20

49

196

20

-

Test 2

210

5/10

-/17

205

10/15

-/20

200

15/20

-/39

195

20

66

190

20

-

193

20

-

Test 3

210

5/10

-/24

205

10/15

-/28

200

15/20

-/-

203

20

34

201

20

40

199

20

57

197

20

-

The measured lowest ignition temperatures of the main test are < 300 °C anddo not differ by more than 10 °C, thus the test is satisfactory. the autoignition temperature is defined as the lowest temperature of all single results of the main test, but rounded down to multiples of 5 °C.

 

Test 1

Test 2

Test3

Lowest ignition temperatures (°C).

198

195

199

Autoignition temperature (°C)

195

Conclusions:
The test substance was assessed for autoflammability acording to EU test method A5 and DIN 51 794. The autoignition temperature was 195 °C at 1016 hPa.

Description of key information

Autoignition temperature: 195 to  200 °C based on 2 studies, both EU method A15, DIN 51794.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
195 °C

Additional information

Two studies are available in which the auto-ignition temperature has been determined according to EU method A15 and DIN 51794.

In the first study (2011 -288), no ignition was observed at a temperature of 199 °C. The lowest temperature giving a positive effect was 204 °C. According to the guidelines the lowest temperature was rounded off to the nearest multiple of 5 °C. Therefore the auto-ignition temperature of the test item was considered to be 200 ± 10 °C. The +/- 10 °C refers to the reproducibility of the method as specified by the guideline. In the second study (T10354), the autoignition temperature was determined to be 195 °C. This lower temperature has been used for the puposes of the CSA.