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Diss Factsheets

Physical & Chemical properties

Boiling point

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
boiling point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
From July 14, 2017 to November 13, 2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
EU Method A.2 (Boiling Temperature)
Deviations:
not specified
Qualifier:
according to guideline
Guideline:
OECD Guideline 103 (Boiling Point)
Deviations:
not specified
GLP compliance:
yes
Type of method:
differential scanning calorimetry
Key result
Boiling pt.:
ca. 206.4 - ca. 211.9 °C
Atm. press.:
ca. 101.3 kPa
Decomposition:
no
Key result
Boiling pt.:
ca. 262.6 - ca. 297.2 °C
Atm. press.:
ca. 101.3 kPa
Decomposition:
no

Result   

Mass Used : 5.73 mg (test F), 2.40 mg (test G), 2.40 mg (test H), 2.38 mg (test I)

Mass (post test) : 0.77 mg (test F), 0.94 mg (test G), 0.56 mg (test H), 0.87 mg (test I)

 

1st Endotherm

2nd Endotherm

 

Run 1 (D)

Endotherm onset temperature (°C)

206.37

267.19

 

Run 2 (E)

Endotherm onset temperature (°C)

211.79

293.21

 

Run 3 (H)

Endotherm onset temperature (°C)

210.83

262.62

 

Run 4 (I)

Endotherm onset temperature (°C)

211.90

297.23

Boiling Range 1: 206.4 - 211.9°C

Boiling Range 2: 262.6 – 297.2°C

 

Comment

The product is known to be of Unknown or Variable Composition, Complex Reaction Products and Biological Materials (UVCB Substance), consequently the presence of multiple boiling or melting point events in a DSC trace is not unexpected.

Conclusions:
Under the study conditions, the overall boiling point range of the test substance was identified to be quiet broad 206.4 to 297.2°C at 101.3 kPa, due to boiling of different chemical components at different temperatures
Executive summary:

A study was conducted to determine the boiling point of the test substance using the Differential Scanning Calorimetry (DSC) method, according to EU Method A.2 and OECD Guideline 103, in compliance with GLP. Two boiling point ranges were determined for the test substance, i.e., first range as: 206.4 to 211.9°C and the second range as: 262.6 to 297.2°C at 101.3 kPa. Identification of multiple melting/boiling point ranges were not considered unexpected by the study authors, given the UVCB nature of the test substance. Therefore, under the study conditions, the overall boiling point range of the test substance was identified to be quiet broad 206.4 to 297.2°C at 101.3 kPa, due to boiling of different chemical components at different temperatures. (Chilworth, 2017).

Description of key information

The boiling point of the test substance was determined using the Differential Scanning Calorimetry (DSC) method according to EU Method A2 and OECD Guideline 103 (Chilworth, 2017).

Key value for chemical safety assessment

Boiling point at 101 325 Pa:
297.2 °C

Additional information

Two boiling point ranges were determined, given the UVCB nature: first range: 206.4 - 211.9°C; second range: 262.6 – 297.2°C at 101.3 kPa (due to boiling of different chemical components at different temperatures).