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Physical & Chemical properties

Melting point / freezing point

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Description of key information

The test material was determined to have a melting point of 131 °C (404 K).

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
131 °C

Additional information

Three studies are provided to address this endpoint, one key and two supporting.

 

In the key study, the melting point of the test material was investigated in a study which was performed under GLP conditions and in accordance with the standardised guidelines OECD 102, EU Method A.1 and US EPA OPPTS 830.7200. The study has been awarded a reliability score of 1 in accordance with the criteria set forth by Klimisch et al. (1997).

The melting point of the test material was investigated using Differential Scanning Calorimetry (DSC). The result was calculated as the mean from three readings, obtained from separate experiments.

Under the conditions of the study, the melting point of the test material was determined to be 131 °C (404 K) at an atmospheric pressure of 1012 ± 1 hPa.

Both of the supporting studies were awarded a reliability score of 4 in accordance with the criteria set forth by Klimisch et al. (1997).

 

In first supporting study, the melting point of the test material was quoted in a paper which discusses the physical properties of alkylated phenols. No details relating to how the data was obtained are included in the reference.

Under the conditions of this study the test material was determined to have a melting point of 131 °C.

 

In the second supporting study the melting point of the test material was estimated using the MPBPWIN model v1.43 (EPI Suite v4.11). The MPBPWIN model estimates the melting point by two different methods. The first is an adaptation of the Joback group contribution method for melting point (Joback, 1982; Reid et al.; 1987) and the second is a simple Gold and Ogle method suggested by Lyman (1985). Sufficient information on the model training set is available to evaluate the applicability of the model to this substance and the molecular weight of the test material is within the training set range; however estimated melting points from MPBPWIN can only be recommended for screening purposes.

The melting point was calculated to be 104.33 °C (Weighted MP).