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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

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
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Peer-reviewed article published in established scientific journal.
Qualifier:
equivalent or similar to guideline
Guideline:
EU Method A.2 (Boiling Temperature)
Deviations:
not specified
Principles of method if other than guideline:
determination of isobaric vapor-liquid equilibrium
GLP compliance:
not specified
Type of method:
other: equilibrium still
Key result
Boiling pt.:
>= 54 - <= 56 °C
Atm. press.:
101.3 kPa
Decomposition:
no

The boiling point ranges from 54 to 64 °C, depending on the composition of the binary system. The boiling point of the mixture with a methanol ratio of 10-30 wt%, which corresponds to a mole fraction of 0.2 to 0.5, ranges from about 54 and 56 °C. The boiling point for the mixture can be lower than the boiling point of the pure components on their own. The boiling point of 54 °C is the azeotropic point for the binary system. Evidence indicates that this may occur somewhere between 0.2 to 0.4 methanol mole fraction.

Conclusions:
The mixture is an azeotrope with a boiling point range from 54 to 56 °C.
Executive summary:

The boiling point ranges from 54 to 64 °C, depending on the composition of the binary system. The boiling point of the mixture with a methanol ratio of 10-30 wt%, which corresponds to a mole fraction of 0.2 to 0.5, ranges from about 54 and 56 °C. The boiling point for the mixture can be lower than the boiling point of the pure components on their own. The boiling point of 54 °C is the azeotropic point for the binary system. Evidence indicates that this may occur somewhere between 0.2 to 0.4 methanol mole fraction.

Description of key information

The mixture is an azeotrope with a boiling point range from 54 to 56 °C.

Key value for chemical safety assessment

Boiling point at 101 325 Pa:
54 °C

Additional information

The boiling point ranges from 54 to 64 °C, depending on the composition of the binary system. The boiling point of the mixture with a methanol ratio of 10-30 wt%, which corresponds to a mole fraction of 0.2 to 0.5, ranges from about 54 and 56 °C. The boiling point for the mixture can be lower than the boiling point of the pure components on their own. The boiling point of 54 °C is the azeotropic point for the binary system. Evidence indicates that this may occur somewhere between 0.2 to 0.4 methanol mole fraction.