Tagetes minuta, ext.

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:

31 January - 02 February 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. Test substance is 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 relevant

GLP compliance:

yes (incl. QA statement)

Remarks:

inspected on 13 and 14 October 2014 / signed on 08 April 2015

Key result

Auto-ignition temperature:

245 °C

Atm. press.:

>= 98 369 - <= 99 809 Pa

Pre-determination:

The ignition attempts of the pre-determination program are presented in the following table:

Selected T*	T Vessel	Drops used	Ignition?	Observations
°C	°C	#	yes/no
300	200.2	5	no	Smoke
300	222.5	5	no	Smoke
300	246.2	5	no	Smoke
300	268.2	5	yes	Flame and plop, Ignition after 16s

Main tests:

The requirements for repeatability of the DIN standard are stated as follows: Three lowest values of the main test have to lie within a range of 5 K (if auto ignition temperature is below 300 °C) .

The following lowest values were recorded:

Experiment	Value	Ignition delay	Drops used
First test series	247 °C	27 s	5
Second test series	245 °C	29 s	5
Third test series	247 °C	22 s	5

The lowest value of the auto ignition temperature is 245 °C. This value was determined using 5 drops test item. The test item showed auto ignition after 29 seconds.

The auto ignition temperature (result of determination) is the lowest value from the lowest values of the three experiments, rounded down to a whole multiple of 5 °C.

Therefore, the auto ignition temperature is stated as 245 °C.

Conclusions:

Auto-ignition temperature of test item was determined to be 245°C (lowest value of three independent determinations rounded down to a whole multiple of 5 °C).

Executive summary:

The study was conducted according to DIN 51794 and EU-Method A.15.

The auto ignition temperature was determined in three independent determinations. A lowest value of the main study of 245°C was found ( for 5 drops of test item, ignition delay 29 seconds).

Therefore, the auto-ignition temperature according to EU A.15 (rounded down to a whole multiple of 5 °C) of test item is stated as 245°C.

Description of key information

The auto-ignition temperature of test item was determined to be 245°C (lowest value of 3 determinations rounded down to a whole multiple of 5 °C).

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:

245 °C

Additional information

A fully reliable experimental study, conducted according to a recognized DIN/EU method and under GLP is available.

It is considered as a key study. The result is retained as key data for purpose of CSA.

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

No particular hazard is anticipated in normal conditions of storage.