Registration Dossier
Registration Dossier
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EC number: 260-300-4 | CAS number: 56634-95-8
Boiling point
Administrative data
Link to relevant study record(s)
- Endpoint:
- boiling point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 6-13 Jan 1999
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 103 (Boiling Point)
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.2 (Boiling Temperature)
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7220 (Boiling Point / Boiling Range)
- GLP compliance:
- yes
- Type of method:
- differential scanning calorimetry
- Decomposition:
- yes
- Decomp. temp.:
- 187.7 °C
Reference
Results:
Preliminary tests in aluminum capsules (pierced lids) did not show any significant endothermic processes corresponding to the liquid-vapor transition phase. With non-pierced lids, the decomposition corresponding to an exothermic process began at about 185 °C before the boiling point was reached.
The decomposition temperature of the purified test material was also measured and it was 187.1 °C.
Description of key information
Decomposition at 187.7 °C starting at ca. 185 °C (OECD 103, EU A.2, EPA OPPTS 830.7220)
Key value for chemical safety assessment
Additional information
The substance (technical grade) under ambient pressure decomposes before boiling. The decomposition temperature was determined using DSC method. A similar behavior was observed for the purified substance, the decomposition temperature of 187.1 °C was determined.
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