Registration Dossier
Registration Dossier
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EC number: 216-036-7 | CAS number: 1478-61-1
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:
- 09 August 2017 - 21 November 2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Remarks:
- Study was conducted in accordance with international guidelines and in accordance with GLP. All guideline validity criteria were met.
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.2 (Boiling Temperature)
- Version / remarks:
- Regulation (EC) 440/2008 of 30 May 2008
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 103 (Boiling Point)
- Version / remarks:
- 27 July 1995
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- photocell detection
- Key result
- Decomposition:
- yes
- Decomp. temp.:
- >= 350 °C
- Remarks on result:
- other: Preliminary test result.
- Remarks:
- Decomposition was concluded following a colour change of the test item.
- Conclusions:
- The test item does not have a measurable boiling point when subject to atmospheric pressure, decomposition occurs at ≥ 350 °C, prior to the onset of boiling.
- Executive summary:
EU Method A.2. – The boiling point of the test item was determined using photocell detection. The procedure employed was designed to be compatible with Method A.2. Boiling Temperature of Commission Regulation (EC) No 440/2008 of 30 May 2008.
Two determinations were carried out. Aliquots of test item (5 – 10 mm) were placed in capillary tubes fused at one end and subjected to a thermal program from 10 K above ambient to 673 K. Heating was at a constant rate of 5 K/min. During heating the test item and the temperature were monitored by the appliance so that the approximate boiling point could be determined.
During the study, the test item began to change its colour from purple-grey to brownish at approximately 350°C. It was concluded that this change was consistent with decomposition of the test item. No boiling point was therefore determined.
Reference
Description of key information
Boiling Point: Not determined (decomposition at ≥ 350 °C); EU Method A.2.; C Bär (2017)
Key value for chemical safety assessment
- Temperature of decomposition (state purity):
- 350 °C
Additional information
EU Method A.2. – The boiling point of the test item was determined using photocell detection. The procedure employed was designed to be compatible with Method A.2. Boiling Temperature of Commission Regulation (EC) No 440/2008 of 30 May 2008.
Two determinations were carried out. Aliquots of test item (5 – 10 mm) were placed in capillary tubes fused at one end and subjected to a thermal program from 10 K above ambient to 673 K. Heating was at a constant rate of 5 K/min. During heating the test item and the temperature were monitored by the appliance so that the approximate boiling point could be determined.
During the study, the test item began to change its colour from purple-grey to brownish at approximately 350°C. It was concluded that this change was consistent with decomposition of the test item. No boiling point was therefore determined.
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