Fatty acids, tall-oil, compds. with diethanolamine

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:

From Sept. 20, 2011 to Sept. 27, 2011

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

Principles of method if other than guideline:

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 auto-ignition occurs. Auto-ignition 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 auto-ignition (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.

GLP compliance:

yes (incl. QA statement)

Key result

Auto-ignition temperature:

353 °C

Atm. press.:

101.9 kPa

Remarks on result:

other:

As determined by this method, the AIT 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 substance 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 auto-ignition temperatures will be achieved in larger vessels.

Conclusions:

Under the test conditions, the auto-ignition temperature of the test substance was determined to be 353°C at 101.9 kPa

Executive summary:

A study was performed to determine self ignition temperature of test substance according to EU Method A.15 in compliance with GLP. A small, metered sample of the test substance was inserted into a uniformly heated 500 mL glass flask containing air at a predetermined temperature. The contents of the flask were observed in a dark environment for 10 minutes following insertion of the sample, or until auto-ignition occurs. Under the test conditions, the auto-ignition temperature of the test substance was determined to be 353°C at 101.9 kPa

Description of key information

The auto-ignition temperature was determined according to EU Method A.15 (Younis, 2012)

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:

353 °C