Niobium doped titanium dioxide

Explosiveness

Link to relevant study record(s)

Reference

Endpoint:

explosive properties of explosives

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2018-08-24 to 2018-08-27

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.14 (Explosive properties)

Deviations:

no

Qualifier:

according to guideline

Guideline:

other: OECD 1 13 Screening test for thermal stability and stability in air

Deviations:

no

GLP compliance:

no

Key result

Parameter:

other: thermal stability

Remarks on result:

other: No exothermal effects observed up to 500 °C in DSC measurements.

Thermal stability

Two DSC-measurements in closed glass crucibles with the test item showed no endothermal or exothermal effects up to the final temperature (500 °C).

The results of the measurement are summarized in Table 1.

Table 1: Thermal stability (DSC measurements)

ldent-No.	Weight / mg	Final temperature / °C	Temperature range / °C	Type of effect	Energy / J/g
38164	11.38	500	---	---	---
38165	16.02	500	---	---	---

 

Explosive properties

The test item consisted mainly of inorganic compounds. However as no exothermal effect was observed in the DSC measurements and TiO₂ is not classified as explosive (according to Gestis Stoffdatenbank accessed on September 24, 2018) no main test on explosive properties had to be performed.

Interpretation of results:

GHS criteria not met

Conclusions:

The test item is not considered to have explosive properties in the sense of the European Commission Regulation (EC) No. 440/2008 (reference 4.14-2).

Executive summary:

A test on explosive properties according to Regulation (EC) No 440/2008 Method A.14 was performed to determine the explosive properties of the test item. As preliminary test, differential scanning calorimetry was used to determine the thermal stability of the sample. No endothermal or exothermal effect occurred up to 500 °C. Furthermore, the inorganic test item mainly consists of TiO₂, which is not known for explosive properties. Based on these findings, no main test on explosive properties was performed. The test item is not considered to have explosive properties in the sense of the European Commission Regulation (EC) No. 440/2008.

Description of key information

The test item is not considered to have explosive properties in the sense of the European Commission Regulation (EC) No. 440/2008 (reference 4.14-1 and 4.14-2).

Key value for chemical safety assessment

Explosiveness:

non explosive

Additional information

In accordance with column 2 of REACH Annex VII, the explosiveness study does not need to be conducted as there are no chemical groups associated with explosive properties in the molecule (reference 4.14-1).

Additionally, a test on explosive properties according to Regulation (EC) No 440/2008 Method A.14 was performed to determine the explosive properties of the test item. As preliminary test, differential scanning calorimetry was used to determine the thermal stability of the sample. No endothermal or exothermal effect occurred up to 500 °C. Furthermore, the inorganic test item mainly consists of TiO₂, which is not known for explosive properties. Based on these findings, no main test on explosive properties was performed. The test item is not considered to have explosive properties in the sense of the European Commission Regulation (EC) No. 440/2008. (reference 4.14-2).

Justification for classification or non-classification

Classification, Labelling, and Packaging Regulation (EC) No 1272/2008

Based on the structure of the molecule and taking into account the provisions laid down in Regulation (EC) No 1272/2008 (CLP), as amended for the twelfth time in Regulation (EU) 2019/521, the test item does not have to be classified with respect to explosiveness.