Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 218-760-9 | CAS number: 2226-96-2
Flammability
Administrative data
Link to relevant study record(s)
Description of key information
In a flammability (solid) pretest, it was impossible to ignite the test item durably. Thus, the main test is not required and the test item is considered to be non flammable. The test item was not classified as flammable, flammable in contact with water or pyrophoric.
Key value for chemical safety assessment
- Flammability:
- non flammable
Additional information
Flammability (GLP-Report 2012 -0078 -DGS)
The Flammability of the test item 4-Hydroxy TEMPO was determined according to Regulation (EC) No 440/2008, method A.10, Flammability (Solids). The test item was formed to an unbroken powder strip of 250 mm in length on a ceran plate. Ignition of the solid powder train was attempted (for a maximum of 2 minutes) with the flame of a teclu-burner. The test item melted and showed a temporary inflammation. The vapours only ignited in the vicinity of the ignition source. After removing the source of ignition, the flame extinguished immediately. There was no enduring inflammation attainable within two minutes of heating the pile with the gas burner. Furthermore no propagation of flames or smouldering was observed within the testing period of four minutes. As it was impossible to ignite the test item durably, the main test was not required. Thus, the test item is considered to be non flammable.
Flammability in contact with water
In accordance with column 2 Annex VII Regulation (EC) No 1907/2006 (REACH), the test on flammability in contact with water does not need to be conducted as the substance shows no reaction with water. As the substance is soluble in water without reaction occurring it is not conceivable that the substance is flammable on contact with water.
Pyrophoric abilities
In accordance with column 2 of Annex VII Regulation (EC) No 1907/2006 (REACH), the test on pyrophoric abilities does not need to be conducted as the substance in not flammable and shows no reaction with the air. The substance is flaked, stored and handled in aerobic conditions, therefore from experience the substance cannot be considered pyrophoric.
Justification for classification or non-classification
Based on the study results, the molecular structure and experience in handling and use, the substance was not classified and labelled as flammable, flammable in contact with water or pyrophoric according to Directive 67/548/EEC (DSD) or Regulation (EC) No 1272/2008 (CLP).
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.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
