4-[4-(3,4-Difluorophenyl)-cyclohexyl]-cyclohexanone

Auto flammability

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

relative self-ignition temperature (solids)

Data waiving:

study scientifically not necessary / other information available

Justification for data waiving:

the study does not need to be conducted because the substance is a solid having a melting point <= 160°C

Reference 2

Endpoint:

auto-ignition temperature (liquids)

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2017-10-18 to 2017-11-020

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

GLP compliance:

no

Key result

Auto-ignition temperature:

425 °C

Atm. press.:

1 013.25 hPa

Preliminary test

The lowest auto-ignition temperature of the test item was determined to be 573 °C in the preliminary test.

Main test

Auto-ignition temperature (summary)

Main test series	Auto-ignition temperature / °C	Time lag / s
1st main test (5 K)	433	8
1st main test (2 K)	429	8
2nd main test (2 K)	426	9
3rd main test (2 K)	427	7

The lowest auto-ignition temperature of the test item was determined to be 426 °C in the main test. 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 425 °C.

Conclusions:

The auto-ignition temperature of the test item was determined to be 425 °C.

Executive summary:

A study was conducted according to Regulation (EC) No 440/2008 Part A A.15 to determine the auto-ignition temperature of the test substance. In a preliminary test the approximately auto-ignition temperature were determined. For the main test three test series were conducted. The temperature determined in the preliminary test was used as starting point for the main test. The temperature was decreased by 5 K until no ignition was observed. The test was repeated with slighter temperature steps to determine the auto-ignition temperature more accurate. According to criteria as laid down in DIN 51794 the auto ignition temperature is the lowest value out of three experiments rounded down to a whole multiple of 5 °C. Therefore the auto-ignition temperature was stated to be 425 °C.

Description of key information

relative self-ignition temperature (solids)

study scientifically not necessary

auto-ignition temperature (liquids)

The auto-ignition temperature of the test item was determined to be 425 °C.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:

425 °C

Additional information

relative self-ignition temperature (solids)

In accordance with column 2 adaptation statement of Annex VII Regulation (EC) No 1907/2006 (REACH), the determination of the self-ignition temperature (as required in section 7.12 of Annex VII) was waived as the substance is a solid with a melting point below 160 °C.

auto-ignition temperature (liquids)

A study was conducted according to Regulation (EC) No 440/2008 Part A A.15 to determine the auto-ignition temperature of the test substance. In a preliminary test the approximately auto-ignition temperature were determined. For the main test three test series were conducted. The temperature determined in the preliminary test was used as starting point for the main test. The temperature was decreased by 5 K until no ignition was observed. The test was repeated with slighter temperature steps to determine the auto-ignition temperature more accurate. According to criteria as laid down in DIN 51794 the auto ignition temperature is the lowest value out of three experiments rounded down to a whole multiple of 5 °C. Therefore the auto-ignition temperature was stated to be 425 °C.