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Physical & Chemical properties

Boiling point

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Administrative data

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Reference
Endpoint:
boiling point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
14 September 2017 to 16 May 2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 103 (Boiling Point)
Version / remarks:
27 July 1995
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Other quality assurance:
ISO/IEC 17025 (General requirements for the competence of testing and calibration laboratories)
Type of method:
differential scanning calorimetry
Specific details on test material used for the study:
Name: Bernel Ester DCM
Other names: bis(1-methylheptyl) maleate
Physical state: Clear liquid
CAS number: 85566-63-8
EC number 287-673-6
Molecular weight: 340.5 g/mol
Purity: 92.78%
Arrival date: 4 September 2017
Storage conditions: Room temperature (15 to 30°C)
Key result
Atm. press.:
101 hPa
Decomposition:
yes
Decomp. temp.:
ca. 186 °C

Melting/Freezing and Boiling Point

No endotherm relating to a melting temperature was observed, the melting point was therefore < -60°C. An exotherm followed by an endotherm was observed and a dark brown residue remained at the end of the test. This would suggest decomposition followed by boiling. The onset temperatures were 186°C for the exotherm and 320°C for the endotherm in test 1 and 193°C for the exotherm and to 320°C for the endotherm for test 2 This gave mean onset values of 189 and 320°C.

 

The DSC thermograms are shown in Figure 10 and Figure 11 (attached).

Conclusions:
An exotherm followed by an endotherm was observed and a dark brown residue remained at the end of the test. This would suggest decomposition followed by boiling. The onset temperatures were 186°C for the exotherm and 320°C for the endotherm in test 1 and 193°C for the exotherm and to 320°C for the endotherm for test 2 This gave mean onset values of 189 and 320°C.
Executive summary:

In this guideline (OECD 103) study, conducted with GLP certification, on test substnce (EC 287-673-6) An exotherm followed by an endotherm was observed and a dark brown residue remained at the end of the test. This would suggest decomposition followed by boiling. The onset temperatures were 186°C for the exotherm and 320°C for the endotherm in test 1 and 193°C for the exotherm and to 320°C for the endotherm for test 2 This gave mean onset values of 189 and 320°C.

Description of key information

Study conducted to recognised testing guidelines and with GLP certification.

Key value for chemical safety assessment

Boiling point at 101 325 Pa:
186 °C

Additional information