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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:

16 January - 09 April 2018

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Justification for type of information:

The study was conducted according to an internationally recognised method, and under GLP. The substance is considered to be adequately characterised. Therefore full validation applies.

Qualifier:

according to guideline

Guideline:

EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))

Version / remarks:

2008

Deviations:

no

Principles of method if other than guideline:

not applicable

GLP compliance:

yes (incl. QA statement)

Remarks:

inspected on 20 and 21 June 2017 / signed on 04 September 2017

Key result

Auto-ignition temperature:

375 °C

Atm. press.:

>= 999.7 - <= 1 021.7 hPa

Preliminary test

The lowest auto-ignition temperature of the test item was determined to be 403 °C in the preliminary test.

Main test

The following table show the results of the main tests.

Main test series	Auto-ignition temperature/°C	Portions	Time lag / s	Barometric pressure / hPa
1^stmain test (5 K)	393	10	100	1013.3 – 1021.7
1^stmain test (2 K)	386	7	70	999.7 – 1010.0
2^ndmain test (2 K)	381	7	50	1014.3 – 1018.2
3^rdmain test (2 K)	377	7	60	999.9

The lowest auto-ignition temperature of the test item was determined to be 377 °C in the main test.

The auto-ignition temperatures were above 300 °C and the three lowest results of the tests with 2 K steps were within a range of 20 K. Therefore, the results were considered as valid.

Due to safety reasons and according to the guidelines the lowest measured temperature at which an ignition was observed was rounded to the next lower number divisible by 5, giving a value of 375 °C.

Conclusions:

The auto-ignition temperature of the test item was 375 °C.

Executive summary:

The study was performed in order to determine the auto-ignition temperature of test item according to EU A.15 guideline. The lowest auto-ignition temperature of the test item was determined to be 377 °Cin the main test.

The auto-ignition temperatures were above 300 °C and the three lowest results of the tests with 2 K steps were within a range of 20 K. Therefore, the results were considered as valid.

Due to safety reasons and according to the guidelines the lowest measured temperature at which an ignition was observed was rounded to the next lower number divisible by 5, giving a value of 375 °C.

Description of key information

The auto-ignition temperature of the test item according to the auto-ignition test conditions in the sense of the European Commission Regulation (EC) No. 440/2008, Method A.15. was 375 °C.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:

375 °C

Additional information

A GLP fully reliable experimental study, conducted according to a recognized EU method, is available. Therefore, it is considered as a key study. The result is retained as key data.

 

This parameter is not relevant for classification, however the information is useful regarding process safety and potential additional fire hazard