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Registration Dossier
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EC number: 439-270-3 | CAS number: 260408-02-4
Boiling point
Administrative data
- Endpoint:
- boiling point
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- the study does not need to be conducted because the substance is a solid which decomposes before boiling
Cross-reference
- Reason / purpose for cross-reference:
- data waiving: supporting information
Reference
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2 February 2001
- Reliability:
- 1 (reliable without restriction)
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Version / remarks:
- 1992
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Version / remarks:
- 1995
- GLP compliance:
- yes
- Type of method:
- differential scanning calorimetry
- Key result
- Melting / freezing pt.:
- > 97 - < 98 °C
- Decomposition:
- yes
- Decomp. temp.:
- > 200 °C
- Conclusions:
- The melting temperature of the substance was determined to be 97°C.
- Executive summary:
Differential Scanning Calorimetry was performed (EC A.1 and OECD 102). DSC showed a small endothermic effect at < 70°C, a large endothermic melting effect between about 73-123°C and a small endothermic effect starting at about 200°C. The melting temperature (extrapolated onset temperature of the meling peak) was determined in triplicate obtaining a mean value of 97°C. Reaction and/or decomposition of the substance occurs from 200°C upwards.
Experiment 1
A small endothermic peak between 41 and 68°C. A large endothermic peak between 85 and 122°C (maximum at 107°C and extrapolated onset temperature at 97°C); this effect is assumed to be caused by melting of the test substance. At > 200°C a small endothermic effect was observed. After the experiment the sample appeared to have been molten and had a yellow colour. Mass loss: 2%. DSC curve: see illustration.
Experiment 2
A small endothermic peak between 40 and 65°C. No changes in appearance and weight.
Experiment 3
Two endothermic peaks: a small one between 40 and 65°C and a large one between 84 and 113°C. Extrapolated onset temperature of the large peak:98°C. After the experiment the sample had molten; the molten sample was colourless. No significant change in weight.
Experiment 4
Run 1: small endothermic effect between 39 and 65°C.
Run 2: large endothermic peak between 73 and 122°C; extrapolated onset temperature: 97°C. Above about 244°C a small endothermic effect was observed. After the experiment the sample appeared to have been molten and had a yellow-brown colour. Mass loss: 0.5%.
Data source
Materials and methods
Results and discussion
Applicant's summary and conclusion
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