Registration Dossier
Registration Dossier
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EC number: 228-589-1 | CAS number: 6300-50-1
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:
- 03/02/2016 and 11/03/2016
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- GLP compliance:
- no
- Other quality assurance:
- other: ISO9001-2008
- Remarks:
- TECNIO network
- Type of method:
- differential scanning calorimetry
- Key result
- Decomposition:
- yes
- Decomp. temp.:
- 282 °C
- Conclusions:
- The substance decomposes at 282ºC without melting
- Executive summary:
A first DSC has been done and the sample has shown a first wide endothermic phenomenon starting at 49ºC with an associated heat of 120.8 J/g and a second endothermic phenomenon starting at 195ºC with an associated heat of 26.8 J/g. Next, an exothermic phenomenon is observed starting at 282ºC with an associated heat of 481 J/g and another exothemic phenomenon is observed starting at 472ºC with an associated heat higher than 1116.9 J/g.
In view of these results, the same sample has been analysed by DSC-HP (in inert atmosphere, nitrogen) and has showed an exothermic phenomenon starting at 278ºC with a peak at 289ºC and an associated heat of 477 J/g which could be attributed to the thermal decomposition of the substance.
Reference
| Differential Scanning Calorimetry (DSC) | High-Pressure Diferential Scanning Calorimetry (DSC-HP) | |
| Equipment | Mettler Toledo DSC-822e | Mettler Toledo DSC-822e |
| Crucible | Aluminium crucible with a capacity of 40 microL | gold plated high pressure crucible with a capacity of 30 microL (hermetically sealed until 150 bar) |
| Gas | dry air at 50mL/min | dry nitrogen at 50 mL/min |
| Method | Heating from 30ºC to 600ºC at a rate of 10ºC/min | Heating from 30ºC to 400ºC at a rate of 10ºC/min |
Description of key information
The determination has been done using DSC and DSC-HP (inert atmosphere with nitrogen) techniques.
The substance decomposes at 282ºC without melting.
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 300 °C
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.
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