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Reference
Endpoint:
auto-ignition temperature (liquids)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
From 21 May 2012 to 30 August 2012
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))
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Remarks:
2012-12-15
Key result
Auto-ignition temperature:
> 392 - < 400 °C
Atm. press.:
> 97.9 - < 98 kPa

Results of preliminary test:

Volume of test item injected in the oven 70 μL

Self-ignition temperature (°C) Self-ignition Maximal temperature of the air recorded in the center of the test flask after self-ignition (°C) Atmospheric pressure (kPa) Relative humidity (%)
Assay N° Observed Corrected Y / N Lag (s) Observed Corrected
1 98 98 No / / / 98.0 61
2 149 149 No / / / 98.0 60
3 197 197 No / / / 98.0 61
4 248 248 No / / / 98.0 62
5 299 299 No / / / 98.0 61
6 351 351 No / / / 97.9 64
7 449 449 Yes 40 450 450 97.9 62
8 433 433 Yes 43 434 434 97.9 62
9 420 420 Yes 47 421 421 97.9 64
10 412 412 Yes 48 413 413 97.9 65
11 402 402 Yes 48 403 403 97.9 65
12 386 386 No / / / 97.9 66

The self ignition temperature was between 386 and 402 °C (corrected temperatures).

Results of the main test:

Volume of test item injected in the oven 70 μL Only the self ignition runs for each assay are summarized in the following table:

Self-ignition temperature (°C) Self-ignition Maximal temperature of the air recorded in the center of the test flask after self-ignition (°C) Atmospheric pressure (kPa) Relative humidity (%)
Assay N° Observed Corrected Lag (s) Observed Corrected
1 396 396 45 398 398 98.0 67
2 396 396 44 397 397 97.9 65
3 397 397 41 398 398 97.9 60
4 395 395 51 396 396 97.9 60
5 395 395 68 396 396 97.9 60
Conclusions:
The mean self-ignition temperature of the test item was: 396 ± 4 °C (corrected temperature).
Executive summary:

The auto-ignition temperature of the substance (2-Hydroxy-3-sulphopropyl) dimethyl[3-[(1-oxododecyl) amino]propyl]ammonium hydroxide (EC 242-893-1) in aqueous solution was investigated in a GLP-compliant study (Grevin, 2012) performed in accordance with EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases)). The mean self-ignition temperature of the mixture was 396 ± 4 °C. The study was performed on a commercial product (aqueous solution) as the substance EC 242-893-1 is manufactured and used in a liquid form.

Description of key information

The auto-ignition temperature of the substance (2-Hydroxy-3-sulphopropyl) dimethyl[3-[(1-oxododecyl) amino]propyl]ammonium hydroxide (EC 242-893-1) in aqueous solution was investigated in a GLP-compliant study (Grevin, 2012) performed in accordance with EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases)). The mean self-ignition temperature of the mixture was 396 ± 4 °C. The study was performed on a commercial product (aqueous solution) as the substance EC 242-893-1 is manufactured and used in a liquid form.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
396 °C

Additional information

The auto-ignition temperature of the substance (2-Hydroxy-3-sulphopropyl) dimethyl[3-[(1-oxododecyl) amino]propyl]ammonium hydroxide (EC 242-893-1) in aqueous solution was investigated in a GLP-compliant study (Grevin, 2012) performed in accordance with standard methods, without deviations. The study is considered as reliable (Klimisch 1) and was selected as key study for the endpoint.

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