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Boiling point

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Endpoint:
boiling point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
15 March 2012-19 June 2012
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Reason / purpose:
reference to same study
Qualifier:
according to
Guideline:
EU Method A.2 (Boiling Temperature)
Version / remarks:
(2008)
Deviations:
no
Qualifier:
according to
Guideline:
OECD Guideline 103 (Boiling point/boiling range)
Version / remarks:
(1995)
Deviations:
no
Qualifier:
according to
Guideline:
EPA OPPTS 830.7220 (Boiling Point / Boiling Range)
Version / remarks:
(1996)
Deviations:
no
GLP compliance:
yes
Type of method:
differential scanning calorimetry
Key result
Decomposition:
yes
Decomp. temp.:
> 150 °C
Remarks on result:
not determinable
Remarks:
Decomp. temp in K: >423 K

See endpoint 4.2 (melting temperature). Boiling of the test substance was not observed below the temperature at which decomposition started.

Conclusions:
The substance has no boiling temperature. It decomposes at > 150°C.
Executive summary:

In a differential scanning calorimetry study, the substance has no boiling temperature. It decomposes at > 150°C. The study was performed in accordance with EC A.2, OECD 103 and EPA OPPTS 830.7220 guidelines and according to the principles of GLP.

Endpoint:
boiling point
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions
Remarks:
Conducted with the hydrolysis product MPKO.
Qualifier:
according to
Guideline:
OECD Guideline 103 (Boiling point/boiling range)
Deviations:
not specified
Qualifier:
according to
Guideline:
EU Method A.2 (Boiling Temperature)
Deviations:
not specified
GLP compliance:
yes (incl. certificate)
Type of method:
differential scanning calorimetry
Key result
Boiling pt.:
ca. 172 °C
Atm. press.:
ca. 101.7 kPa
Conclusions:
The boiling point of MPKO is 172°C at an atmospheric pressure of ca. 101.7 kPa.
Executive summary:

The boiling temperature of the substance was determined using a Q100 difference scanning calorimeter. The boiling point of MPKO is 172°C at an atmospheric pressure of ca. 101.7 kPa.

Description of key information

No boiling of OS2600 was observed below  the decomposition temperature of 150°C. The boiling point of MPKO, the main hydrolysis product of OS2600 was determined to be 172°C.

Key value for chemical safety assessment

Boiling point at 101 325 Pa:
172 °C

Additional information

Key study: The boiling point test was performed on OS-1600 in accordance with OECD Guideline 103 and EU Method A.2. In a differential scanning calorimetry study, the substance has no boiling temperature. It decomposes at > 150°C.

Supporting study: The boiling temperature of the analogue substance MPKO was determined using a Q100 difference scanning calorimeter. The boiling point was 172°C at an atmospheric pressure of ca. 101.7 kPa.