Registration Dossier
Registration Dossier
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Reaction mass of 3,4,5-trichlorophthalic acid, strontium salt and 3,4,6-trichlorophthalic acid, strontium salt and 3,4-dichlorophthalic acid, strontium salt and 3,5-dichlorophthalic acid, strontium salt and 3,6-dichlorophthalic acid, strontium salt and 3-chlorophthalic acid, strontium salt and 4,5-dichlorophthalic acid, strontium salt and 4-chlorophthalic acid, strontium salt
EC number: 925-568-5 | CAS number: -
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:
- 2019-10-18 to 2019-10-24
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- guideline study with acceptable restrictions
- Qualifier:
- according to guideline
- Guideline:
- other: ASTM E 537-76
- GLP compliance:
- no
- Type of method:
- differential scanning calorimetry
- Key result
- Decomposition:
- yes
- Decomp. temp.:
- > 400 °C
- Remarks on result:
- other: No melting point was observed before decomposition starts >400 °C.
- Conclusions:
- No melting point was measured for the test item before the decomposition at > 400 °C starts.
- Executive summary:
The melting point of the test item has been determined by DSC measurements according to test method ASTM E 537 -76. No melting point was measured for the test item before the decomposition at > 400 °C starts.
Reference
The substance shows first a small endothermic signal between 173 °C and 202 °C which corresponds to a mass loss of 0.9 weight% in the TGA (Thermogravimetric Analysis).
This signal has not been considered as a melting point but indicates the release of unknown volatile compounds, although the test item has been previously dried.
Above 400 °C a highly exothermic decomposition reaction has been measured that is not finished at the end of the scan at 500 °C. The energy content that could be measured is already 3107 J/g, indicating most likely a REDOX reaction of the test item with the aluminum crucible. The overall loss of mass due to the decomposition of the substance is 42 weight% within the scan and 53 weight% after the end of the measurement. No melting point was measured before the decomposition starts at > 400°C.
Description of key information
The melting point of the test item has been determined by DSC measurements according to test method ASTM E 537 -76. No melting point was measured for the test item before decomposition at > 400 °C starts.
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.
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