Essential oil of Matricaria recutita (Asteraceae) obtained from flower tops by steam distillation of European origin

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 January 26, 2018 to February 06, 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

Qualifier:

according to guideline

Guideline:

DIN 51794 (Testing of mineral oil hydrocarbons - Determination of ignition temperature)

Version / remarks:

2003

Deviations:

no

Principles of method if other than guideline:

Not applicable

GLP compliance:

yes (incl. QA statement)

Remarks:

GLP compliance programme (inspected on 20-21 June 2017 / signed on 4 September 2017)

Key result

Auto-ignition temperature:

250 °C

Atm. press.:

>= 1 023 - <= 1 024 hPa

Result

Table 4.12/1: Auto ignition temperature – results

Main test series	Auto-ignition temperature / °C	Portions	Time lag / s	Barometric pressure / hPa
1^stmain test (5 K)	252	8	50	1023.0 – 1024.0
1^stmain test (2 K)	254	10	50	995.6 – 1008.4
2^ndmain test (2 K)	253	10	50	998.5
3^rdmain test (2 K)	254	9	45	1009.6 – 1014.1

The lowest auto-ignition temperature of the test item was determined to be 252 °Cin the main test.

Validity

The auto-ignition temperatures were below 300 °C and the three lowest results of the tests with 2 K steps were within a range of 10 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 250 °C.

Conclusions:

This parameter/method is not relevant for classification, however the information is useful regarding potential additional fire hazard. No particular hazard is anticipated in normal conditions of storage.

Executive summary:

The study was conducted under GLP according to standard DIN 51794:2003 (listed in EU A.15 guideline).

The auto ignition temperature was determined in three independent determinations. The lowest value of the auto ignition temperature is 252 °C. This value was determined using 8 drops of test substance. The test substance showed auto ignition after 50 seconds.

Due to safety reasons and according to the guidelines the auto ignition temperature (result of determination) is the lowest value from the lowest valuesof the experiments, rounded down to a whole multiple of 5 °C.

Therefore, the auto-ignition temperature of the test item is stated as 250°C between 1013.0 - 1024hPa.

Description of key information

The test item has been determined to have an auto-ignition temperature of 250°C under the test conditions (1023 -1024hPa).

No particular hazard is anticipated in normal conditions of storage.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:

250 °C

Additional information

A GLP fully reliable experimental study, conducted according to a recognized EU/DIN 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.