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Physical & Chemical properties

Melting point / freezing point

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Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
thermal analysis
Key result
Decomposition:
yes
Decomp. temp.:
>= 250 °C
Remarks on result:
other: No melting temperature. Reaction and/or decomposition of the test substance starting at 250 ºC (523K) was observed

No melting of OS 1600 was observed below 250 ºC the temperature at which reaction and/or decomposition started . The test substance has no melting temperature.

Conclusions:
No melting of OS 1600 was observed below 250 ºC the temperature at which reaction and/or decomposition started . The test substance has no melting temperature.
Executive summary:

The melting point test was performed in accordance with OECD Guideline 102 and EU method A.1. No melting of OS 1600 was observed below 250 ºC the temperature at which reaction and/or decomposition started . The test substance has no melting temperature.

Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study
Remarks:
Conducted with the main hydrolysis product= MPKO.
Qualifier:
according to
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
not specified
Qualifier:
according to
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Deviations:
not specified
GLP compliance:
yes (incl. certificate)
Type of method:
thermal analysis
Key result
Melting / freezing pt.:
ca. -45 °C
Atm. press.:
ca. 101.7 kPa
Conclusions:
The melting point of MPKO is -45°C at an atmospheric pressure of ca. 101.7 kPa.
Executive summary:

The melting temperature of the substance was determined using a Q100 difference scanning calorimeter. The melting point of MPKO is -45°C at an atmospheric pressure of ca. 101.7 kPa.

Description of key information

No melting of OS 1600 was observed below 250 °C, the temperature at which reaction and/or decomposition started . The test substance has no melting temperature. The melting point of MPKO, the main hydrolysis product of OS1600 was determined to be -45°C.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
-45 °C

Additional information

Key study: The melting point test was performed on OS-1600 in accordance with OECD Guideline 102 and EU method A.1. No melting of OS 1600 was observed below 250 ºC the temperature at which reaction and/or decomposition started . The test substance has no melting temperature.

Supporting study: The melting temperature of the analogue substance MPKO was determined using a Q100 difference scanning calorimeter. The melting point was -45°C at an atmospheric pressure of ca. 101.7 kPa.