Registration Dossier
Registration Dossier
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EC number: 227-376-0 | CAS number: 5810-88-8
Boiling point
Administrative data
- Endpoint:
- boiling point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 7 Dec 2016 - 3 Feb 2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 017
- Report date:
- 2017
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.2 (Boiling Temperature)
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 103 (Boiling Point)
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- The Department of Health of the Government of the United Kingdom
- Type of method:
- differential scanning calorimetry
Test material
- Reference substance name:
- O,O-bis(2-ethylhexyl) hydrogen dithiophosphate
- EC Number:
- 227-376-0
- EC Name:
- O,O-bis(2-ethylhexyl) hydrogen dithiophosphate
- Cas Number:
- 5810-88-8
- Molecular formula:
- C16H35O2PS2
- IUPAC Name:
- O,O-bis(2-ethylhexyl) sulfanylphosphonothioate
Constituent 1
Results and discussion
Boiling point
- Atm. press.:
- ca. 1 017 hPa
- Decomposition:
- yes
- Decomp. temp.:
- >= 226 °C
Any other information on results incl. tables
Results
Table 2 – Thermographic Data
Thermal event |
Interpretation |
Temperature – Determination 1 |
Temperature – Determination 2 |
||
Exotherm: onset temperature |
Start of decomposition |
227.3 °C |
500.45 K |
226.6 °C |
499.75 K |
Sharp endotherm: onset temperature |
Volatilization |
258.06 °C |
531.21 K |
257.04 °C |
530.19 K |
Atmospheric pressure: Determination 1 and 2, 101.7 kPa
Overall result: Decomposition from approximately 226 °C (499 K)
Discussion
As decomposition was observed in determinations 1 and 2, determinations
3 and 4 were performed as an evaluation of oxidative or thermal
decomposition.
Similar thermographic profiles were obtained using air (determinations 1 and 2) and nitrogen (determinations 3 and 4) atmospheres. This indicated that the decomposition was probably thermal and not oxidative.
The test item was deemed to decompose from approximately 226 °C (499 K), therefore no boiling point could be determined.
The sharp endotherm was considered to be the volatilization of organic fragments derived from the decomposition of the test item.
Conclusion:
The test item decomposed from approximately 226 °C (499 K) under both
air and nitrogen atmospheres. As the test item decomposed the boiling
point could not be determined.
Applicant's summary and conclusion
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