Registration Dossier
Registration Dossier
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EC number: 430-280-3 | CAS number: 844491-96-9
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:
- From January 1998 to February 1998
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- other: DIN (51007)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- other: M 95/0035 method
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- differential scanning calorimetry
- Specific details on test material used for the study:
- Batch No.: 1086(86,88,92,96); Purity: 62g/100g; Appearance: dark brown powder, homogeneous
- Key result
- Decomposition:
- yes
- Decomp. temp.:
- 105 °C
- Remarks on result:
- not determinable
- Conclusions:
- Under the study conditions,a melting point of the test substance could not be observed up to 280°C (maximum temperature of the Kofler hot bar, preliminary test). Differential scanning calorimetry (DSC): A melting temperature could not be determined. The test substance decomposes in a closed crucible under its own vapour pressure (starting at about 105°C). Instead of endothermal peaks, as expected for melting, exothermal peaks were observed indicating decomposition.
- Executive summary:
A study was conducted to determine the melting point of the test substance according to M 95/0035 method, OECD 102 Guideline (Paris, 12 July 1995) and DIN (51007), in compliance with GLP. A sample of the test substance was analysed using differential scanning calorimetry (DSC). A melting temperature could not be determined. The test substance decomposes in a closed crucible under its own vapour pressure (starting at about 105°C). Instead of endothermal peaks, as expected for melting, exothermal peaks were observed indicating decomposition. Under the study conditions, a melting point of the test substance could not be observed up to 280°C (maximum temperature of the Kofler hot bar) (Grosenick, 1997).
Reference
Description of key information
The melting point was determined according to OECD Guideline 102, M Method 95/0035 and DIN Method 51007 (Grosenick, 1997).
Key value for chemical safety assessment
Additional information
A melting temperature could not be determined. The test substance decomposed in a closed crucible under its own vapour pressure (starting at about 105°C).
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