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Flammability

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Endpoint:
flammable solids
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2018-11-29 - 2018-11-30 (experimental phase)
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
UN Manual of Tests and Criteria: Test N.1 (Test method for readily combustible solids)
Version / remarks:
UN Recommendations on the TRANSPORT OF DANGEROUS GOODS:
Manual of Tests and Criteria, Rev. 6 (2015) and UN-Model Regulations, Rev. 20 (2017)
Deviations:
no
Qualifier:
according to guideline
Guideline:
other: VDI 2263, sheet 1
Version / remarks:
1990
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Key result
Test procedure:
burning rate test: preliminary screening test
Remarks on result:
substance does not ignite and propagate combustion either by burning with flame or smouldering along 200 mm of the powder train within the 2 minutes test period

Preliminary Test

The test item did not ignite at room temperature using a flame as ignition source being applied for at least 2 minutes. The test item melted.

Main Test

In the preliminary test the test item could not be ignited by a flame within 2 minutes. Thus, the performance of the main test was not necessary.

Interpretation of results:
not classified based on GHS criteria
Conclusions:
the test item is not a flammable solid
Executive summary:

The test item 2-Hydroxy-1-[4-(4-(2-hydroxy-2-methylpropionyl)phenoxy)phenyl]-2-methylpropan-1-one could not be ignited applying a flame as ignition source for at least 2 minutes. The test item is classified as follows:

UN Transport Regulation:The product has not to be classified as 'readily combustible solid' in class 4.1 according to the UN Transport Regulation.

GHS (CLP Regulation EC 1272/2008: Annex 1: 2.7): The product has not to be classified as 'flammable solid' according to GHS / CLP Regulation EC 1272/2008 Annex 1: 2.7.

Endpoint:
self-heating substances / mixtures
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2018-11-29 - 2018-12-03 (experimental phase)
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
UN Manual of Tests and Criteria: Test N.4 (Test method for self-heating substances)
Version / remarks:
UN Recommendations on the TRANSPORT OF DANGEROUS GOODS:
Manual of Tests and Criteria, Rev. 6 (2015) and UN-Model Regulations, Rev. 20 (2017)
Deviations:
no
Qualifier:
according to guideline
Guideline:
other: VDI 2263 Sheet 1 Grewer Oven
Version / remarks:
1990
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Result:
negative outcome (no effect observed)

In the investigation of self-ignition in the Grewer oven, the pure test item showed an endothermic effect in the temperature range of 100 - 120°C. No exothermic effects were observed until the maximum test temperature of 415 °C. After the measurement, the basket was empty.

For the test item in mixture with Kieselguhr an endothermic effect was observed in the temperature range of 100 – 120 °C. Additionally, an exothermic effect was detected at a temperature of approx. 370 °C, which led to a maximum temperature of approx. 500 °C.

Results of the Grewer oven experiment:

- pure test item:no self-heating at at mospheric pressure in the Grewer Oven; cf. figures 1, 2)

- test item in mixture with Kieselguhr (1:1): approx. 370°C onset self-ignition (max. temperature: 500°C; cf. figures 1, 2)

Interpretation of results:
not classified based on GHS criteria
Conclusions:
no self-heating at atmospheric pressure
Executive summary:

The substance 2-Hydroxy-1-[4-(4-(2-hydroxy-2-methylpropionyl)phenoxy)phenyl]-2-methylpropan-1-one indicated no self-heating at atmospheric pressure in the Grewer Oven. Therefore, it is classified as follows:

- UN Transport Regulation:The test item does not have to be classified as 'self-heating substance' in Class 4 Division 4.2 according to the UN Transport Regulation.

- GHS / CLP Regulation EC 1272/2008 Annex 1: 2.11:The test item does not have to be classified as 'self-heating substance' according to GHS/CLP RegulationEC 1272/2008 Annex 1: 2.11.

Description of key information

- the test item is not a flammable solid (UN Test N.1; GLP)

- no self-heating at atmospheric pressure (UN Test N.4; GLP)

Key value for chemical safety assessment

Flammability:
not classified

Additional information

It was tested whether the substance 2-Hydroxy-1-[4-(4-(2-hydroxy-2-methylpropionyl)phenoxy)phenyl]-2-methylpropan-1-one should be classified as a flammable solid or self-heating substance with respect to the UN Transport Regulation.

A reliability score of 1 was assigned for both UN Tests, in accordance with the criteria for assigning data quality in line with the principles described by Klimisch (1997).

Justification for classification or non-classification

According to CLP Regulation EC 1272/2008, the substance has not to be classified as flammable solid and self-heating substance.

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