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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 233-439-3 | CAS number: 10169-02-5
Melting point / freezing point
Administrative data
Link to relevant study record(s)
Description of key information
Estimated value: 349.84 °C
Endothermic effetc: 127- 174 °C (onset at 137.7 °C; enthalpy - 4.2 J/g).
Decomposition: > 280 °C
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 349.84 °C
Additional information
Differential scanning calorimetry or DSC is a thermoanalytical technique in which the difference in the amount of heat required to increase the temperature of a sample and reference is measured as a function of temperature. Both the sample and reference are maintained at nearly the same temperature throughout the experiment. It can be used to measure a number of characteristic properties of a sample, in fact using this technique it is possible to observe fusion and crystallization events as well as glass transition temperatures Tg. DSC can also be used to study oxidation, decomposition as well as other chemical reactions. It was performed on the sample with SOP-STR 028 method.
From 25 -120 °C water/solvent is released, followed by an endothermic effect between 127- 174 °C (onset at 137.7 °C; enthalpy - 4.2 J/g).
Decomposition of the product starting from 280 °C.
An estimated value of 349.84 °C with MPBPVP 1.43 was used as key value for risk assessment, using the following smile (salified substance):
OS(=O)(=O[Na])c4cc(ccc4c3ccc(N=Nc1c2ccccc2ccc1O)cc3S(=O)(O)=O[Na])N=Nc5c6ccccc6ccc5O
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.
