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EC number: 800-309-8 | CAS number: 231297-75-9
Auto flammability
Administrative data
Link to relevant study record(s)
- Endpoint:
- auto-flammability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2012-10-23 - 2012-10-25
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: GLP Guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- The Department of Health of the Government of the United Kingdom
- Key result
- Auto-ignition temperature:
- ca. 360 °C
- Atm. press.:
- ca. 99.6 ca. kPa
- Remarks on result:
- other: Due to instrument failure, atm pressure was not recorded but is estimated.
- Remarks:
- Atm press estimated as average of high and low over 12 mo period
- Conclusions:
- The study report describes a valid guideline study conducted under certificated GLP compliance. The auto-ignition temperature was determined as 360 +/- 5 °C (not corrected to standard pressure).
- Executive summary:
The auto-ignition temperature of magnesium sulfonate target substance (CAS 231297-75-9) was determined using a Carbolite flask heater and a procedure compatible to EU Method A.15 (Tremain, 2012). The test flask was heated in a flask heater. Aliquots of test item (tested as received) were injected into the flask using a syringe and the flask observed for signs of ignition over a 300 second period. This procedure was repeated, varying the sample size, as necessary, until the lowest temperature at which ignition, if any, occurred within 300 seconds of insertion, was determined. The room temperature during the experiment was 21 °C.
Due to a failure in the instrument used to record the atmospheric pressure, the atmospheric pressure was not recorded. A review of historical atmospheric pressure data over a twelve month period shows the atmospheric pressure as 95.79 to 103.93 kPa at Harlan Laboratories Ltd, Shardlow, UK. As result, an auto-ignition temperature of 360 +/- 5 °C is reported for the test substance.
Reference
Due to a failure in the instrument used to record the atmospheric pressure, the atmospheric pressure was not recorded. A review of historical atmospheric pressure data over a twelve month period shows the atmospheric pressure as 95.79 to 103.93 kPa at Harlan Laboratories Ltd, Shardlow, UK.
The room temperature was 21 °C.
Table 1. Results of the auto-ignition temperature determination
Test Temperature (°C) |
Test Volume (µL) |
Ignition Delay (s) |
Observations |
200 |
70 |
> 300 |
No ignition. Grey fumes were emitted. |
250 |
70 |
> 300 |
No ignition. Grey fumes were emitted. |
300 |
70 |
> 300 |
No ignition. Grey fumes were emitted. |
350 |
70 |
> 300 |
No ignition. Grey fumes were emitted. |
400 |
70 |
5 |
An orange/blue flame. Grey fumes were emitted. |
380 |
70 |
7 |
An orange/blue flame. Grey fumes were emitted. |
370 |
70 |
15 |
An orange/blue flame. Grey fumes were emitted. |
360 |
70 |
> 300 |
No ignition. Grey fumes were emitted. |
366 |
70 |
> 300 |
No ignition. Grey fumes were emitted. |
368 |
70 |
> 300 |
No ignition. Grey fumes were emitted. |
368 |
200 |
> 300 |
No ignition. Grey fumes were emitted. |
368 |
400 |
5 |
An orange/blue flame. Grey fumes were emitted. |
358 |
400 |
> 300 |
No ignition. Grey fumes were emitted. |
362 |
400 |
1 |
An orange/blue flame. Grey fumes were emitted. |
360 |
400 |
8 |
An orange/blue flame. Grey fumes were emitted. |
358 |
400 |
> 300 |
No ignition. Grey fumes were emitted. |
358 |
600 |
> 300 |
No ignition. Grey fumes were emitted. |
358 |
800 |
> 300 |
No ignition. Grey fumes were emitted. |
358 |
1000 |
> 300 |
No ignition. Grey fumes were emitted. |
358 |
1200 |
> 300 |
No ignition. Grey fumes were emitted. |
358 |
1400 |
> 300 |
No ignition. Grey fumes were emitted. |
Description of key information
EU Method A.15_Auto-ignition temperature: 360 +/- 5 °C
Key value for chemical safety assessment
- Autoflammability / Self-ignition temperature at 101 325 Pa:
- 360 °C
Additional information
The key value was determined using the flask heater according to EU Method A.15 (Tremain, 2012).
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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