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Melting point / freezing point

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Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2009-09-15
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Test procedure in accordance with national standard methods (ASTM) without GLP.
Qualifier:
according to guideline
Guideline:
other: ASTM-D97
Deviations:
no
GLP compliance:
no
Type of method:
pour point
Melting / freezing pt.:
-45 °C
Atm. press.:
ca. 1 atm
Decomposition:
no
Sublimation:
no

Measurement

Pour Point: -45°C / -45°C (repeat determination)

Conclusions:
Average pour point: -45 °C at atmospheric pressure.
Executive summary:

The pour point of Hexan-1-ol was assessed according to ASTM-D97. The pour point was detected to be - 45 °C at atmospheric pressure.

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:
other: This result was derived from a peer-reviewed handbook (CRC Handbook).
Principles of method if other than guideline:
No information available regarding guideline or methodology. The value is rounded to the nearest 0.1ºC.
GLP compliance:
not specified
Melting / freezing pt.:
-44.6 °C
Atm. press.:
other: see Remarks
Remarks on result:
other: The atmospheric pressure at which this result was determined is not stated but it is consistent with expected properties at standard pressure.
Melting / freezing pt.:
-46.7 °C
Atm. press.:
other: see Remarks
Remarks on result:
other: The atmospheric pressure at which this result was determined is not stated but it is consistent with expected properties at standard pressure. This value was taken from an earlier edition of the Handbook (1990)
Conclusions:
A melting point value of -44.6ºC was reported in a handbook or collection of reliable data which has been subject to peer-review and in which the original data sources are traceable. The result is considered to be reliable.
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
other: This information was obtained from the public IUCLID 2000 CD-ROM. Further review of the original source to reassign the reliability would not alter the overall conclusions concerning this endpoint.
Principles of method if other than guideline:
Method: other: not specified
GLP compliance:
not specified
Melting / freezing pt.:
-51.6 °C
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
other: Data sourced from secondary literature which has not been peer reviewed
Melting / freezing pt.:
-51 - -44 °C

Description of key information

The pour point of hexan-1-ol is -45°C at 1013 hPa. 

Key value for chemical safety assessment

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

Additional information

A measured pour point value of -45°C at 1013 hPa was determined in accordance with ASTM-D97 test method.The result is considered to be reliable.

It is supported by a melting point value of -44.6°C taken from a reliable handbook, and various consistent results from other reference sources.

Discussion of trends in the Category of C6-24 linear and essentially-linear aliphatic alcohols:

As the chain length increases, melting point increases. This is because molecular weight is higher and intermolecular forces in the substance are all higher.