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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 416-530-4 | CAS number: 178949-82-1
Melting point / freezing point
Administrative data
Link to relevant study record(s)
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 1993-06-03 to 1993-06-03
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- thermal analysis
- Key result
- Decomposition:
- yes
- Decomp. temp.:
- > 311 °C
- Conclusions:
- In a GLP study conducted according to EU Method A1 (Differential thermal analysis), trisodium EDDS decomposes above 311°C.
- Executive summary:
In a GLP study conducted according to EU Method A1, the effect of heating trisodium EDDS under controlled conditions was examined by differential scanning calorimetry. The test material decomposed at 311°C, therefore no melting point could be measured.
Reference
Description of key information
In a GLP study conducted according to EU Method A1 (Differential thermal analysis), trisodium EDDS decomposes above 311°C
Key value for chemical safety assessment
Additional information
In a GLP study conducted according to EU Method A1, the effect of heating trisodium EDDS under controlled conditions was examined by differential scanning calorimetry. The test material decomposed at 311oC, therefore no melting point could be measured (van Helvoirt, 1993a).
In addition, in a GLP study conducted according to EU Method A.1, EDDS acid decomposes at approximately 195.2°C (Gair et al. 2002). [Data on EDDS free acid is considered relevant to use for understanding the potential vapour pressure of trisodium EDDS, and is acceptable for using as read-across information.]
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.
