ALDOLONE

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

other:

Justification for type of information:

JUSTIFICATION FOR DATA WAIVING
In accordance with section 1.2 of REACH Regulation (EC) No. 1907/2006 Annex XI further study of self-heating substances and mixtures does not need to be completed based on weight of available evidence and expert judgement.

The relative self-ignition temperature for solids, and/or in this case for low melting point solid - the resultant liquid was examined using DIN 51794 and/or ASTM 2155 national test guidelines for the test item which is equivalent to EU Method A.15. This involved aliquots of test material (tested as received) were placed into the flask and the flask observed for signs of ignition over a 300 second period. The test item was a yellow solid. Whilst heating the test item, to 402°C no relevant exothermic reaction self-heating of the sample was observed. The test item was determined not to have a relative self-ignition temperature below its melting temperature (35.3°C). Further there was no hazardous decomposition leading to self- or auto-ignition below 402°C.

Applicant assessment indicates that: the classification of self-heating substances and mixtures does not apply and that further testing in a method consistent with the UN Test N.4 test method for self-heating substances is not scientifically necessary. The EU Method A.15 test combined with further information on the substance, served as a suitable screening test for self-ignition properties and in accordance with REACH Regulation (EC) No. 1907/2006: Annex VII section 7.12 the test item clearly had a melting point < 160 °C and was entirely molten above 35.3°C. Substances which are entirely molten < 160 °C should not be considered for classification in this class since the melting process is endothermic and the substance-air surface is drastically reduced.

Therefore there is sufficient evidence to conclude on classification and labelling and to preclude further testing according to UN Transport of Dangerous Goods Manual of Tests and Criteria: Test N.4.

References:
1. UN Transport of Dangerous Goods Manual of Tests and Criteria, Seventh Edition (2019)
3. ECHA Guidance on Information Requirements and Chemical Safety Assessment (Chapter R.7a: Endpoint Specific Guidance, R.7.1.12, July 2017).
4. REACH Regulation (EC) 1907/2006, Annex XI, section 1
5. CLP Regulation (EC) 1272/2008, Annex I, section 2.11
6. ECHA Guidance on Application on the CLP Criteria, section 2.11 (v5.0, July 2017)

Reason / purpose for cross-reference:

data waiving: supporting information

Reason / purpose for cross-reference:

data waiving: supporting information

Reason / purpose for cross-reference:

data waiving: supporting information

Reason / purpose for cross-reference:

data waiving: supporting information

Reference 2

Endpoint:

auto-ignition temperature (liquids)

Type of information:

experimental study

Adequacy of study:

key study

Study period:

04-11-2010 to 04-11-2010

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

test procedure in accordance with national standard methods with acceptable restrictions

Remarks:

Method equivalent to guideline or national standards with acceptable deviations.

Qualifier:

equivalent or similar to guideline

Guideline:

EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))

Deviations:

no

Qualifier:

according to guideline

Guideline:

DIN 51794 (Testing of mineral oil hydrocarbons - Determination of ignition temperature)

Deviations:

no

Qualifier:

according to guideline

Guideline:

other: ASTM D2155 : Standard Test Method For Determination Of Fire Resistance Of Aircraft Hydraulic Fluids By Autoignition Temperature

Version / remarks:

version not specified, however expected to be comparable to ASTM D2155-12

Deviations:

not specified

GLP compliance:

no

Key result

Auto-ignition temperature:

402 °C

Atm. press.:

1 atm

Remarks on result:

other: 402 ± 5 °C; atmospheric pressure: 98.3 kPa

Conclusions:

The auto-ignition temperature was determined to be 402 ± 5 °C and atmospheric pressure was 98.3 kPa.

Executive summary:

The auto-ignition temperature was determined using a method eq. or similar to EU Method A.15 and according to DIN 51794. The auto-ignition temperature is the lowest temperature at which the test item will ignite when mixed with air under the conditions defined in the test method. The auto-ignition temperature was determined to be 402 ± 5 °C and atmospheric pressure was 98.3 kPa.

Description of key information

Relative self-ignition temperature for solids: no relative self-ignition below the melting temperature (35.3 °C) of the substance was observed

Supporting information:

Auto-ignition temperature: 402 ± 5 °C at 98.3 kPa (or 1 atmosphere), eq. or similar to EU Method A.15, 2010

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:

402 °C

Additional information

In accordance with section 1.2 of REACH Regulation (EC) No. 1907/2006 Annex XI further study of self-heating substances and mixtures does not need to be completed based on weight of available evidence and expert judgement.

The relative self-ignition temperature for solids, and/or in this case for low melting point solid - the resultant liquid was examined using DIN 51794 and/or ASTM 2155 national test guidelines for the test item which is equivalent to EU Method A.15. This involved aliquots of test material (tested as received) were placed into the flask and the flask observed for signs of ignition over a 300 second period. The test item was a yellow solid. Whilst heating the test item, to 402°C no relevant exothermic reaction self-heating of the sample was observed. The test item was determined not to have a relative self-ignition temperature below its melting temperature (35.3°C). Further there was no hazardous decomposition leading to self- or auto-ignition below 402°C.

Applicant assessment indicates that: the classification of self-heating substances and mixtures does not apply and that further testing in a method consistent with the UN Test N.4 test method for self-heating substances is not scientifically necessary. The EU Method A.15 test combined with further information on the substance, served as a suitable screening test for self-ignition properties and in accordance with REACH Regulation (EC) No. 1907/2006: Annex VII section 7.12 the test item clearly had a melting point < 160 °C and was entirely molten above 35.3°C. Substances which are entirely molten < 160 °C should not be considered for classification in this class since the melting process is endothermic and the substance-air surface is drastically reduced.

Therefore there is sufficient evidence to conclude on classification and labelling and to preclude further testing according to UN Transport of Dangerous Goods Manual of Tests and Criteria: Test N.4.

References:
1. UN Transport of Dangerous Goods Manual of Tests and Criteria, Seventh Edition (2019)
3. ECHA Guidance on Information Requirements and Chemical Safety Assessment (Chapter R.7a: Endpoint Specific Guidance, R.7.1.12, July 2017).
4. REACH Regulation (EC) 1907/2006, Annex XI, section 1
5. CLP Regulation (EC) 1272/2008, Annex I, section 2.11
6. ECHA Guidance on Application on the CLP Criteria, section 2.11 (v5.0, July 2017)

 

Supporting information: Key study : eq. or similar to EU Method A.15, 2010 : The auto-ignition temperature was determined using a method eq. or similar to EU Method A.15 and according to DIN 51794. The auto-ignition temperature is the lowest temperature at which the test item will ignite when mixed with air under the conditions defined in the test method. The auto-ignition temperature was determined to be 402 ± 5 °C and atmospheric pressure was 98.3 kPa.