Reaction mass of 2,6-Bis[(dimethylamino)methyl]-4-(1-{3-[(dimethylamino)methyl]-4-hydroxyphenyl}-1-methylethyl)phenol and 4-(1-{3,5-Bis[(dimethylamino)methyl]-4-hydroxyphenyl}-1-methylethyl)-2,6-bis[(dimethylamino)methyl]phenol

Explosiveness

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

explosive properties of explosives

Data waiving:

study scientifically not necessary / other information available

Justification for data waiving:

the study does not need to be conducted because there are no chemical groups present in the molecule which are associated with explosive properties

Reference 2

Endpoint:

explosive properties of explosives

Type of information:

experimental study

Adequacy of study:

supporting study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

guideline study with acceptable restrictions

Qualifier:

according to guideline

Guideline:

other: UN-MTC Part III, sub-section 20.3.3.3 'Thermal stability and exothermic decomposition energy'

Version / remarks:

Appendix 6, point 3 ‘Screening procedures for substances which may have explosive properties’ of
UN-MTC refers to the decomposition energy.

Principles of method if other than guideline:

The Differential Thermal Analysis (DTA) measurement was carried out as stipulated in UN-MTC (Part III, sub-section 20.3.3.3 Thermal stability and exothermic decomposition energy).

GLP compliance:

no

Other quality assurance:

ISO/IEC 17025 (General requirements for the competence of testing and calibration laboratories)

Parameter:

other: DTA

Remarks on result:

other: heat release about 175 kJ/kg

The exothermic decomposition enthalpy was calculated by integration of the exothermal peak. At a heating rate of 3 K/min, an exothermic reaction started at about 315 °C with a heat release of about 175 kJ/kg, which was not completed until 500 °C. Please refer to the field "Illustration (picture/graph)".

Interpretation of results:

GHS criteria not met

Conclusions:

HPP 12879-1 has no explosive properties.

Executive summary:

The Differential Thermal Analysis (DTA) measurement was carried out as stipulated in UN-MTC (Part III, sub-section 20.3.3.3 Thermal stability and exothermic decomposition energy).

A small amount of the test item (22.6 mg) was weighed into a crucible made of glass that was sealed afterwards. The temperature difference between sample and reference (Al2O3) was measured as a function of temperature and was recorded electronically.

At a heating rate of 3 K/min, an exothermic reaction started at about 315 °C with a heat release of about 175 kJ/kg, which was not completed until 500 °C. Based on this thermal behaviour it is expected that the substance is not explosive.

Therefore, it can be concluded by expert judgement that ‘HPP 12879-1 (Katalysator BM 4)' has no explosive properties. Testing according to UN-MTC test procedure is not necessary.

Description of key information

HPP 12879 -1 has no explosive properties.

Key value for chemical safety assessment

Explosiveness:

non explosive

Additional information

There are no chemical groups associated with explosive properties present in the molecule. Further more based on the thermal behaviour (heat release about 175 J/g) it is expected that the substance is not explosive.

Justification for classification or non-classification

The available data on explosive properties of the test substance do not meet the criteria for classification according to Regulation (EC) 1272/2008, and are therefore conclusive but not sufficient for classification.