Registration Dossier
Registration Dossier
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EC number: 273-381-6 | CAS number: 68958-92-9
Boiling point
Administrative data
Link to relevant study record(s)
- Endpoint:
- boiling point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 103 (Boiling Point)
- Version / remarks:
- July 1995
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.2 (Boiling Temperature)
- Version / remarks:
- May 2008 (Commission Regulation (EC) No 440/2008)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- differential scanning calorimetry
- Key result
- Decomposition:
- yes
- Decomp. temp.:
- > 200 °C
- Conclusions:
- No boiling point was determined. Reaction and/or decomposition of the test item was observed at > 200°C.
Reference
Preliminary Test
The TGA curve of the test item is shown in Figure 1 in the attached document "S-930 - Melting and Boiling Temperature.pdf". Starting at 210°C, the weight of the sample decreased significantly. At 230°C, the sample weight had decreased by 25%. At 549°C (end of the experiment), 50% weight loss of the test item was observed. After the experiment, black residue was observed on the lid of the sample container and a black residue remained in the sample container (original colour: dark brown). The change of the colour indicated reaction and/or decomposition of the test item.
Main Study
The DSC curve obtained during cooling is shown in Figure 2 (see attached document "S-930 - Melting and Boiling Temperature.pdf"). During cooling a glass transition was observed between -80°C and -50°C). During heating a glass transition was observed between -75°C and -25°C. The inflection point of the glass transition was -62.935°C. An exothermic peak was observed starting at 200°C. After the experiment, a black residue remained in the sample container. The exothermic effect was due to reaction and/or decomposition of the test item.
Description of key information
No boiling point was determined (OECD 103, EU A.2)
Key value for chemical safety assessment
Additional information
No boiling point was determined. Reaction and/or decomposition of the test item was observed at > 200°C.
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