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Diss Factsheets

Physical & Chemical properties

Melting point / freezing point

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Administrative data

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Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2009/05/27
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 E537-07
Deviations:
no
GLP compliance:
no
Type of method:
pour point
Melting / freezing pt.:
ca. 12.5 °C
Atm. press.:
ca. 1 atm
Decomposition:
no
Sublimation:
no
Remarks on result:
other: Extrapolated onset temperature

Calibration

calibration material:Indium RS309062

melting point (theory) in °C: 156.60

melting point (experimental) in °C: 156.51 / 156.61

Measurement (triple determination)

Onset temperature in °C: 4.0 / 4.8 / 4.4

Extrapolated onset temperature in °C: 11.5 / 13.4 / 12.5

Peak temperature in °C: 17.7 / 16.3 / 17.0

Conclusions:
Average melting point: 12.5 °C at atmospheric pressure.
Executive summary:

The melting point of Undecan-1-ol was assessed according to ASTM E537 -07. The melting point was 12.5 °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.:
19 °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.
Conclusions:
A melting point value of 19.0ºC is 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: Documentation insufficient for assessment.
Principles of method if other than guideline:
Method: other: no information reported
Melting / freezing pt.:
14.3 °C
Conclusions:
A melting point value of 14.3°C is reported in secondary literature. The original reference was not available for review and no further information is available. The reliability of this result is not assignable.
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 (company product literature). The original source of data is unreferenced and therefore untraceable.
Qualifier:
according to guideline
Guideline:
other: ASTM D97
GLP compliance:
not specified
Type of method:
pour point
Melting / freezing pt.:
11 °C
Atm. press.:
other: see Remarks
Remarks on result:
other: The exact atmospheric pressure at which this result was determined is not stated, but may be assumed to be within the normal range of standard pressure.
Conclusions:
A pour point value of 11ºC is reported in secondary literature (company product literature). The original reference was not available for review and no further information is available. The reliability of this result is not assignable.
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: Value taken from secondary literature.
Principles of method if other than guideline:
Experimental measurement (data is taken from a reliable handbook, information about the methodology is not available)
GLP compliance:
not specified
Melting / freezing pt.:
11 - 19 °C
Conclusions:
A melting point value of 11 - 19°C is reported in secondary literature. The original reference was not available for review and no further information is available. The reliability of this result is not assignable.

Description of key information

The melting point of undecan-1-ol is 12.5°C at 1 atm pressure.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
12.5 °C

Additional information

The melting point of 12.5°C was determined in accordance with the ASTM E537-07 test method. The result is considered reliable.

It is supported by a value of 19°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 chain length increases, melting point increases. This is because molecular weight is higher and intermolecular forces in the substance are all higher.