Absolute of Cistus ladaniferus (Cistaceae) obtained from labdanum concrete by ethanol extraction

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:

14 March 2018

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

guideline study with acceptable restrictions

Justification for type of information:

The study was be conducted according to an internationally recognised method, and under GLP. The substance is considered to be adequately characterised. However, no main test was conducted due to heavy reactions observed during the pre-test. Therefore no auto-ignition temperature was determined during the test and validation applies with restrictions.

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:

inspected on 15 and 16 November 2017 / signed on 15 May 2018

Remarks on result:

not determinable

Remarks:

No main test conducted due to heavy reactions observed during the pre-test above 440°C.

Table 4.12/1 : Ignition attempts pre-test

Selected T	T Vessel	Drops used	Ignition?	Observations
°C	°C		yes/no
300	200,1	5	no	smoke
300	220	5	no	smoke
300	241,1	5	no	smoke
300	261,3	5	no	smoke
300	283,6	5	no	smoke
300	305,9	5	no	smoke
300	333,8	5	no	smoke
300	358,4	5	no	smoke
300	377,7	5	no	smoke
500	401,5	5	no	smoke
500	420,3	5	no	smoke
500	441,7	5	no	smoke
500	461,8	5	no	Many smoke, flame and upper part of aperture start to burn.* Ignition after 83s

*During the cleaning process after the ignition trial at 441.7 of the Pre-test a very big flame with a loud bang was observed. The upper part of the aperture started to burn. This also happened after the first detected ignition at 461 °C. Therefore, the test was stopped.

No main test was conducted.

Atmospheric pressure during the pre-test was 99447 Pa.

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).

Due to heavy reactions, observed during the Pre-test, the determination of the auto ignition temperature of the test item according to EU A.15 was stopped for safety reasons. Indeed, during the cleaning process after the ignition trial at 441.7 of the Pre-test a very big flame with a loud bang was observed. The upper part of the aperture started to burn. This also happened after the first detected ignition at 461 °C.

Finally  the auto-ignition temperature of the substance was not determined because no main test was conducted due to heavy reactions observed during the pre-test above 440°C.

However, considering the elevated temperature at which the reactions were observed, it is considered that no particular hazard is anticipated in normal conditions of storage.

Description of key information

Considering the substance as a liquid, the auto-ignition temperature (for liquids) of the test item was conducted.

Even if no auto-ignition temperature was determined, pre-test results showed that no particular hazard is anticipated in normal conditions of storage.

Additional information

A reliable experimental study, conducted according to a recognized EU/DIN method and under GLP, is available. Therefore, it is considered as a key study.

 

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