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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 618-797-4 | CAS number: 91893-72-0
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:
- 2018-06-27 to 2018-08-02
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Version / remarks:
- 1995
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Version / remarks:
- 2008
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7200 (Melting Point / Melting Range)
- Version / remarks:
- 1998
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- differential scanning calorimetry
- Remarks:
- and capillary method
- Key result
- Atm. press.:
- 1 013 hPa
- Decomposition:
- yes
- Decomp. temp.:
- > 250 °C
- Sublimation:
- no
- Conclusions:
- The test item TA-1 has no melting point up to its decomposition starting at approx. 250 °C as determined by differential scanning calorimetry and capillary method according to Regulation EC No. 440/2008 Method A.1. and OECD Test Guideline 102 (1995).
Reference
The test item shows three endothermic effects in the temperature ranges of 250 °C - 280 °C, 320 °C - 360 °C and 380 °C - 450 °C in the DSC runs.
Due to the fact that none of the observed endothermic effects can be clearly associated with a melting of the test item further measurements were carried out with the capillary method.
Capillary Method
For verification of the results the test item was additionally tested three times according to the capillary method. In the three tests, the test item started to liquefy and changed its colour to brown at a temperature of approx. 340 °C. At a temperature of 350 °C, the test item was completely liquid and turned black. At a temperature of 360 °C, the test item started to climb in the capillary. At a temperature of 400 °C the test was ended.
The measurement carried out with the capillary method showed that none of the endothermic effects observed in the DSC measurements can be assigned to a melting point of the test item. Due to this result, the test item has no point.
Description of key information
The test item TA-1 has no melting point up to its decomposition starting at approx. 250 °C as determined by differential scanning calorimetry and capillary method according to Regulation EC No. 440/2008 Method A.1. and OECD Test Guideline 102 (1995).
Key value for chemical safety assessment
Additional 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.
