Methyl toluene-4-sulphonate

Auto flammability

Link to relevant study record(s)

Reference

Endpoint:

auto-ignition temperature (liquids)

Type of information:

experimental study

Adequacy of study:

key study

Study period:

12 July 2017

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))

Version / remarks:

Commission Regulation (EC) No 440/2008 of 30 May 2008 laying down test methods pursuant to Regulation (EC) No 1907/2006 of the European Parliament and of the Council on the Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH), Method A.15, Official Journal of the European Union L 142 of 31 May 2008

Deviations:

yes

Remarks:

see "any other information" for details

GLP compliance:

yes (incl. QA statement)

Specific details on test material used for the study:

No further details specified in the study report.

Key result

Auto-ignition temperature:

> 400 °C

Atm. press.:

97.6 kPa

Conclusions:

The measured auto-ignition temperature of the test item was: no auto-ignition of test item was observed up to 400°C. The test item is considered to be a non-flammable until 400°C.

Executive summary:

The auto-ignition temperature is the lowest temperature of the inner surface of an enclosure that results in ignition of a gas, vapour or liquid injected into the enclosure.

The objective of this study was to determine the auto-ignition temperature of the test item in air at atmospheric pressure. A small sample of the test item was inserted into an uniformly heated 500 ml glass flask containing air at a predetermined temperature. The lowest temperature at which hot-flame ignition occurs for a series of prescribed sample volumes was taken to be the hot-flame auto-ignition temperature of the chemical.

 

After the flask temperature has reached the desired temperature (at about 240 °C), the temperature controller was adjusted to maintain this temperature within the designated limits and the system was allowed to equilibrate.

 

Approximately 0.1 mL of the test item to be tested was injected into the flask.

 

If ignition was not observed in 9 minutes, the sample tested is considered to be non-flammable at the gas temperature and at the applied concentration in the flask. The flask was completely purged with the hot-air gun. The timer and recorder were reset. The test was repeated at a higher temperature, at about 300 °C. Ignition was not observed in 9 minutes. The test was repeated even at higher temperature, at about 400 °C. Ignition was not observed. The test was repeated using a larger sample (approximately 0.2 mL) at about 400 °C. The test was negative.

The test item did not ignite at 400 °C, no further tests were performed.

 

Temperature was measured in case of each experiment at the outside and inside of the flask. The temperature distribution was steady outside the flask.

The tests were carried out at 97.6 kPa atmospheric pressure.

 

The measured auto-ignition temperature of the test item was: no auto-ignition of test item was observed up to 400 °C. The test item is considered to be a non-flammable until 400 °C.

Description of key information

The test item is considered to be a non-flammable until 400 °C.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:

400 °C

Additional information

Temperature was measured in case of each experiment at the outside and inside of the flask. The temperature distribution was steady outside the flask.

The tests were carried out at 97.6 kPa atmospheric pressure.

 

The measured auto-ignition temperature of the test item was: no auto-ignition of test item was observed up to 400 °C. The test item is considered to be a non-flammable until 400 °C.