Benzene, mono-C10-13-alkyl derivs., distn. residues, sulfonated, barium salts

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:

December 6, 2017 - December 13, 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:

EU Regulation (EC) 440/2008

Deviations:

no

GLP compliance:

yes

Key result

Auto-ignition temperature:

392 °C

Atm. press.:

100.7 kPa

Interpretation of Results

Auto-ignation temparature is the lowest temperature at which the substance will produce hot flame ignition in air at atmospheric pressure without the aid of an external ignition source such as spark or flame. It is the lowest temperature to which a combustible mixture must be raised so that the rate of heat evolved by the exothermic oxidation reaction will exceed the rate at which heat is lost to the surroundings and cause ignition. Autoignition, by its very nature, is dependent on the chemical and physical properties of the material and the method and apparatus employed for its determination. The autoignition temperature by a given method does not necessarily represent the minimum temperature at which a given material will self ignite. The volume of the vessel used is particularly important since lower autoignition temperatures will be achieved in larger vessels.

Comments

As test sample was extremely viscous and could not be drawn up by a syringe, testing was carried out by adding sample onto a small piece of foil and this was then dropped into the flask.

No cool flames were observed. Ignition produced an orange flame.

Conclusions:

The autoignition temperature of the test material has been determined to be 392°C.

Executive summary:

Test Objective and Information

The test covers the determination of hot and cool flame autoignition temperatures of a liquid chemical in air at atmospheric pressure in a uniformly heated vessel. A small, metered sample of the product to be tested is inserted into a uniformly heated 500 ml glass flask containing air at a predetermined temperature. The contents of the flask are observed in a dark environment for 10 minutes following insertion of the sample, or until autoignition occurs. Autoignition is identified by the sudden appearance of a flame inside the flask and by a sharp rise in the temperature of the gas mixture. The lowest internal flask temperature at which the hot-flame ignition occurred for a series of prescribed sample volumes is taken to be the hot-flame autoignition (AIT) of the chemical in air at atmospheric pressure. Ignition delay times (ignition time lags) are measured in order to determine the ignition delay / ignition temperature relationship. The lowest temperature at which cool flames (CFT) are observed is also recorded. In all instances the ignition delay times are recorded.

The test is conducted in accordance with the procedure described in EU Regulation (EC) 440/2008, Annex Part A test A15.

Comments

As test sample was extremely viscous and could not be drawn up by a syringe, testing was carried

out by adding sample onto a small piece of foil and this was then dropped into the flask.

No cool flames were observed. Ignition produced an orange flame.

 

Result

Hot flame autoignition temperature (auto-ignition temperature,°C): 392

Including correction factor for barometric pressure (°C): 392

Time lag to autoignition (s): 18

Barometric pressure (kPa): 100.7

Sample quantity (g): 0.6

Relative Humidity (%): 44

 

The autoignition temperature of the test material has been determined to be 392°C.

Description of key information

Auto-Ignition Temperature has been determined to be 392°C, using a procedure designed to be compatible with Method A.15 Auto-Ignition Temperature (Liquids and Gases) of Commission Regulation (EC) No 440/2008 of 30 May 2008.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:

392 °C

Additional information

Test Objective and Information

The test covers the determination of hot and cool flame autoignition temperatures of a liquid chemical in air at atmospheric pressure in a uniformly heated vessel. A small, metered sample of the product to be tested is inserted into a uniformly heated 500 ml glass flask containing air at a predetermined temperature. The contents of the flask are observed in a dark environment for 10 minutes following insertion of the sample, or until autoignition occurs. Autoignition is identified by the sudden appearance of a flame inside the flask and by a sharp rise in the temperature of the gas mixture. The lowest internal flask temperature at which the hot-flame ignition occurred for a series of prescribed sample volumes is taken to be the hot-flame autoignition (AIT) of the chemical in air at atmospheric pressure. Ignition delay times (ignition time lags) are measured in order to determine the ignition delay / ignition temperature relationship. The lowest temperature at which cool flames (CFT) are observed is also recorded. In all instances the ignition delay times are recorded.

The test is conducted in accordance with the procedure described in EU Regulation (EC) 440/2008, Annex Part A test A15.

 

Comments

As test sample was extremely viscous and could not be drawn up by a syringe, testing was carried

out by adding sample onto a small piece of foil and this was then dropped into the flask.

No cool flames were observed. Ignition produced an orange flame. 

Result

The autoignition temperature of the test material has been determined to be 392°C.