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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 203-615-4 | CAS number: 108-78-1
Stability: thermal, sunlight, metals
Administrative data
Link to relevant study record(s)
Description of key information
Melamine is stable until ca. 280 °C. Combustible vapours develop at >280 °C.
Additional information
Combustible vapours develop at >280 °C.
Hazardous decomposition products are possible:
> 300 °C: liberation of NH3
> 600 °C: liberation of HCN
No exothermic reactions in the Grewer oven until 275 °C.
No exothermic reaction by the Geigy-Kühner method at 280 °C at an induction time of 8 h. Exothermic reaction at 290 °C at a temperature rise of 2 °C and at 330 °C at a temperature rise of 5 °C.
No exothermic reaction by the Dewar container method at 250 °C at an induction time of 80 h.
Justification for classification or non-classification
Self-reacting properties:
A justification for not to perform tests is based on the criterion
according to the CLP Regulation:
"Substances ... should be considered for classification ... unless:
There are no chemical groups present in the molecule associated with
explosive or selfreactive properties; examples of such groups are given
in Tables A6.1 and A6.2 in the UN RTDG, Manual of Tests and Criteria,
Appendix 6."
Melamine has no such chemical group listed in the UN Manual of Tests and Criteria. Therefore the performance of the test is not required.
A second justification for not to perform tests is based on the criterion according to the ECHA Guidance on the Application of the CLP Criteria:
"According CLP, substances and mixtures should be considered for classification in this hazard class, unless: ... Their heat of decomposition is less than 300 J/g".
Thermochemistry properties of melamine, reported by Ullmann 2006 and BASF 1974, do not indicate self-reactive properties of melamine.
A third justification for not to perform tests is based on the practical experience with storage and shipping of melamine that do not indicate a danger of self-reaction. See also Section 4.23.
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.
