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Administrative data

Endpoint:
relative self-ignition temperature (solids)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
November 2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2018
Report date:
2019

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
EU Method A.16 (Relative Self-Ignition Temperature for Solids)
GLP compliance:
yes (incl. QA statement)

Test material

Constituent 1
Chemical structure
Reference substance name:
2-[2,4-bis(tert-pentyl)phenoxy]-N-(3,5-dichloro-4-ethyl-2-hydroxyphenyl)butyramide
EC Number:
300-634-0
EC Name:
2-[2,4-bis(tert-pentyl)phenoxy]-N-(3,5-dichloro-4-ethyl-2-hydroxyphenyl)butyramide
Cas Number:
93951-12-3
Molecular formula:
C28H39Cl2NO3
IUPAC Name:
2-[2,4-bis(tert-pentyl)phenoxy]-N-(3,5-dichloro-4-ethyl-2-hydroxyphenyl)butyramide
Test material form:
solid
Details on test material:
Batch 44029
colour : White to off-white
retest date : 01/06/2019
Specific details on test material used for the study:
Controlled room temperature (15-25oC, ≤70% relative humidity), protected from light and humidity (store in a tightly closed container)

Results and discussion

Relative self-ignition temperature (solids)
Key result
Remarks on result:
no self-ignition observed up to the melting point

Any other information on results incl. tables

Experimental method

The stainless steel wire mesh cube was filled with the test item and tapped gently. More of the substance was added until the cube was completely full. The cube was then suspended in the centre of the oven at room temperature. One thermocouple was placed at the centre of the cube and the other between the cube and the oven wall to determine the temperature difference of the sample and the oven.

The temperature difference of the oven and sample were continuously recorded while the temperature of the oven was increased at a rate of 0.5°C/min.

The self-ignition temperature as obtained by this method, is the minimum ambient temperature at which a certain volume of a test item will ignite under defined conditions (expressed in °C at which the sample temperature reaches 400°C).

The experiment was repeated three times.

The test was carried out at about 98.0 – 98.2 kPa atmospheric pressure.

Applicant's summary and conclusion

Conclusions:
The 80ACQ was not auto-flammable under the conditions of the test.
Executive summary:

The purpose of this test was to provide preliminary information on the auto-flammability of solid substances at elevated temperatures. A specific amount of the test substance was placed in an oven, in a wire-mesh cube at room temperature; the temperature difference/time curve of the sample of test item was recorded while the temperature of the oven was increased from about 30°C to a maximum of about 400°C once and about 200°C two times (due to the observed melting of the test item) at a rate of 0.5°C/min. The self-ignition temperature as obtained by this method, is the minimum ambient temperature at which a certain volume of a test item is ignited under defined conditions.

Three repeated tests were performed. The relative self-ignition temperature of the test item: no defined ignition was observed up to the melting point.

The 80ACQ was not auto-flammable under the conditions of the test.