Teflubenzuron

Flammability

Description of key information

The substance has not to be classified as flammable gas, flammable liquid, flammable solid, flammable in contact with water, flammable aerosol, pyrophoric solid, pyrophoric liquid or self-heating substance.

Key value for chemical safety assessment

Flammability:

not classified

Additional information

Flammable gases

The test item is a solid at ambient conditions. This hazard class is only applicable for gases. Thus, the substance was not considered for classification as flammable gas.

 

Flammable liquid

The test item is a solid at ambient conditions. This hazard class is only applicable for liquids. Thus, the substance was not considered for classification as flammable liquid.

 

Flammable solids

BASF (2001)

An experimental study to investigate the flammability of the test item was conducted according to Guideline 92/69/EEC, Method A.10. The substance in its commercial form was made into a pile. An attempt is then made to ignite the sample under defined conditions and the burning time is measured. The test substance did not burn under the test conditions. The test substance is not considered highly flammable.

BATTELLE (2003)

An experimental study to investigate the flammability of the test item was conducted according to Guideline 92/69/EEC, Method A.10. In the preliminary test the test item was filled into a mould to form a 250 mm long powder train. Thirty seconds were sufficient to ignite one end of the powder train. The flame propagated along 25 mm in 30 sec. No more propagation of the flame was observed. Therefore, the test item was not considered as highly flammable and no further testing was required.

Based on a weight of evidence approach the test item has not to be considered as flammable solid.

 

Pyrophoric liquids

The test item is a solid at ambient conditions. This hazard class is only applicable for liquids. Thus, the substance was not considered for classification as flammable liquid.

 

Pyrophoric solids

In accordance with section 2.10.4 Annex I of Regulation (EC) No 1272/2008 and ECHA guidance on the application of CLP Criteria section 2.10.4.1 the classification procedure for pyrophoric solids needs not to be applied when experience in manufacture or handling shows that the solid does not ignite spontaneously on coming into contact with air at normal temperatures (i.e. the solid is known to be stable at room temperature for prolonged periods of time (days)). Based on the experience in handling and use the substance is not known to ignite spontaneously when coming into contact with air at normal temperatures. Thus, no study was conducted and the substance was not considered for classification as pyrophoric solid.

 

Self-heating substances and mixtures

An experimental study was conducted according to VDI 2263, Part 1, Chapter 1.4.1 using the grewer oven test. The test item was filled in a small wire basket of a volume of 10 cm³ and this wire-basket was placed in the Grewer Oven. The oven was heated up with a heating rate of 1 K/min. No self-heating was observed under the test conditions until melting of the test item.

 

Substances which, in contact with water, emit flammable gases

In accordance with column 2 of REACH Annex VI and with Regulation (EC) No 1272/2008 Annex I section 2.12.4 and ECHA guidance on the application of CLP Criteria section 2.12.4.2 the classification procedure for this hazard class needs not to be applied. Based on the experience in handling and use the substance does not react with water and in addition the test substance is not pyrophoric. Thus, no study was conducted and the substance was not considered for classification.

 

Flammable Aerosols

Section 2.4.2 of Guidance on the application on the CLP Criteria state as follows: “Aerosols, this means aerosol dispensers, are any non-refillable receptacles made of metal, glass or plastics and containing a gas compressed, liquefied or dissolved under pressure, with or without a liquid, paste or powder, and fitted with a release device allowing the contents to be ejected as solid or liquid particles in suspension in a gas, as a foam, paste or powder or in a liquid state or in a gaseous state." Thus, as the substance does not meet the definition for aerosol, the test for aerosols was waived. Consequently the substance has not to be considered for classification for this hazard class.

 

In conclusion, the substance have not to be considered as flammable gas, flammable liquid, flammable solid, flammable in contact with water, flammable aerosol, pyrophoric solid, pyrophoric liquid or self-heating substance.

Justification for classification or non-classification

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

In accordance with Annex I Section 2.2, Section 2.3, Section 2.7, Section 2.9, Section 2.10 Section 2.11, Section 2.12 of Regulation (EC) No 1272/2008, as amended for the fifteenth time in Regulation (EU) 2020/1182, and UN GHS Rev 8 (2019) the test item has not to be classified as, readily combustible solid in class 4 Division 4.1, flammable liquid, self-heating substance in Class 4 Division 4.2, substances which in contact with water emit flammable gases in Class 4 Division 4.3, pyrophoric liquid, pyrophoric solid in class 4 Division 4.2, flammable gases in class 2 or as aerosol in class 2.