Registration Dossier
Registration Dossier
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EC number: 234-603-7 | CAS number: 12014-93-6
Flammability
Administrative data
Link to relevant study record(s)
Description of key information
The flammability of dicerium trisulphide have been determined in a GLP-compliant study performed according to a recognized guideline (EU Method A.10). The substance is concluded to be not highly flammable.
From handling , the substance is
concluded not to have pyrophoric properties nor to be flammable in
contact with water; which is confirmed by the absence of structural
alert. Furthermore, a flammability test in contact with water (according
to EU Method A.12 and UN test N.5) was performed on a mixture contaning
87% dicerium trisulphide and other consituents known to be not flammable
in contact with water. This mixture is classified as non flammable in
contact with water.
Key value for chemical safety assessment
- Flammability:
- not classified
Additional information
Justification for classification or non-classification
Flammability:
From a flammability test (EU Method A.10), the substance is concluded to be not highly flammable. A.10 test results are generally used to determine the classification under DSD system, while UN N.1 test results are generally used to determine the classification under CLP system. The main difference between both tests is the presence (UN N.1) or absence (A.10) of a wetted zone. Under CLP, this wetted zone is intended to select the right classification categories for flammable solids. However, if the solid is not flammable, the wetted zone is not used. Therefore, as dicerium trisulphide is not flammable, having or not a wetted zone has no importance and A.10 test results can be used to conclude on classification under both DSD and CLP systems.
Pyrophoricity:
In the daily use and handling of dicerium trisulphide during which continuous exposure to air can occur, no spontaneous ignition is observed. The absence of structural alerts furthermore confirms that it is highly unlikely that the substance has pyrophoric properties.
Flammability in contact with water:
Under conditions where dicerium trisulphide is in contact with water (ex. aquatic ecotoxicity tests), no ignition and/or liberation of flammable gases is observed.
The absence of structural alerts furthermore confirms that it is highly unlikely that the substance is flammable in contact with water.
In addition, a flammability test in contact with water was performed on a mixture containing 87% dicerium trisulphide and others constituents known to be not flammable in contact with water. This test concluded that no classification is needed for the mixture.
Based on this pool of evidence, dicerium trisulphide is thus concluded to be non flammable in contact with water.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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