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Physical & Chemical properties

Melting point / freezing point

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Reference
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2018.10.31 - 2018.12.05
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Version / remarks:
27 July 1995
Deviations:
no
GLP compliance:
no
Other quality assurance:
ISO/IEC 17025 (General requirements for the competence of testing and calibration laboratories)
Type of method:
method to determine freezing temperature
Remarks:
; differential scanning calorimeter (DSC)
Key result
Melting / freezing pt.:
>= 2.5 - <= 3.5 °C
Atm. press.:
101.3 kPa
Decomposition:
no
Sublimation:
no
Key result
Melting / freezing pt.:
>= 275.5 - <= 276.5 K
Atm. press.:
101.3 kPa
Decomposition:
no
Sublimation:
no
Conclusions:
The freezing point of 2,3-butanediol ((2R,3R)-rich) was (3 ± 0.5) ℃ {(276 ± 0.5) K} at 101.3 kPa.
Executive summary:

The freezing point of the sample was measured by Freezing point apparatus. The freezing point was (3 ± 0.5)℃ {(276 ± 0.5) K} at 101.3 kPa. The freezing point of 2,3-butanediol ((2R,3R)-rich) was not determined at 101.3 kPa by

DSC.

Description of key information

The freezing point of 2,3-butanediol ((2R,3R)-rich) was (3 ± 0.5) ℃ {(276 ± 0.5) K} at 101.3 kPa.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
3 °C

Additional information