Registration Dossier
Registration Dossier
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EC number: 249-636-2 | CAS number: 29450-45-1
Boiling point
Administrative data
- Endpoint:
- boiling point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 27.07.2007 - 10.10.2007
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 007
- Report date:
- 2007
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.2 (Boiling Temperature)
- Version / remarks:
- According to Siwoloboff method
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- method according to Siwoloboff
Test material
- Reference substance name:
- 2-ethylhexyl (4-chloro-2-methylphenoxy)acetate
- EC Number:
- 249-636-2
- EC Name:
- 2-ethylhexyl (4-chloro-2-methylphenoxy)acetate
- Cas Number:
- 29450-45-1
- Molecular formula:
- C17H25ClO3
- IUPAC Name:
- 2-ethylhexyl (4-chloro-2-methylphenoxy)acetate
- Reference substance name:
- (4-chloro-2-methylphenoxy)acetic acid
- EC Number:
- 202-360-6
- EC Name:
- (4-chloro-2-methylphenoxy)acetic acid
- Cas Number:
- 94-74-6
- Molecular formula:
- C9H9ClO3
- IUPAC Name:
- (4-chloro-2-methylphenoxy)acetic acid
- Test material form:
- liquid
Constituent 1
impurity 1
Results and discussion
Boiling point
- Key result
- Atm. press.:
- 99.7 kPa
- Decomposition:
- yes
- Decomp. temp.:
- >= 214.5 °C
- Remarks on result:
- other:
- Remarks:
- Decomposition starts at the temperature >= 214.5 oC
Applicant's summary and conclusion
- Executive summary:
The measurements were performed under atmospheric pressure of 99.7 kPa.
It was not possible to determine MCPA-2EH boiling point because of decomposition of test material (one could observe a release of gaseous decompositions products) and an appearance of the volatile impurities. The used Siwoloboff method is suitable for pure and transparent chemical substances. The measurement was performed in the temperature range (start and end): 210oC – 350oC. Together with temperature increase the test item in outer capillary grows dark (from about 215 ± 0.5oC) and there was no possibility to observe a rapid and continuous air bubble movement from a capillary. At the temperature of 270 ± 0.8oC, MCPA-2EH sample was already black and one cloud not notice a capillary and an air bubble in an inner tube. From above it is evident that MCPA-2EH decomposes below a boiling point under atmospheric pressure.
A volatile impurities content (water for example) causes that the determined boiling temperature can be near the boiling temperature of a volatile component.
Decomposition starts at the temperature 215 ± 0.5oC.
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