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EC number: 411-950-4 | CAS number: 96562-58-2 DHPPME; MAK-ME; MEHPOPS; R-MAQ-ME
Melting point / freezing point
Administrative data
Link to relevant study record(s)
Description of key information
Campbell et al. (1993): Under the conditions of the study, the melting point of the test material was determined to be in the range of 338.5 to 340.0 K.
Küssner (1991): Under the conditions of this study, the melting point was determined to be + 65.6 °C.
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 338.5 K
Additional information
Two studies are available to address this endpoint. Both are considered to be key as the data are equally reliable and the values obtained were in good agreement with each other. The studies were assigned a reliability score of 1 in accordance with the criteria for assessing data quality set forth by Klimisch et al. (1997).
Campbell et al. (1993)
The melting point of the test material was determined in accordance with the standardised guidelines OECD 102 and EU method A.1 under GLP conditions.
The heated metal block method was used with a Gallenkamp melting point apparatus with digital thermometer. The Gallenkamp melting point apparatus was calibrated using benzoic acid.
Under the conditions of the study, the melting point of the test material was determined to be in the range of 338.5 to 340.0 K.
Küssner (1991)
The melting point of the test material was investigated in accordance with the standardised guideline EU Method A.1 under GLP conditions using differential scanning colorimetry.
Samples of the test material were heated at rates of + 3.0 °C/min from + 30 to + 75 °C. The thermal effects of each of the resulting physical and chemical changes influence the amounts of heat energy expended, and were calculated from their variation with the temperature. From the behaviour of the test material when it melts, as a function of the temperature, the following information can be calculated: the melting point of the sample, the calculated melting point of the pure major constituents, the thermodynamic purity of the sample under examination and the latent heat of fusion of the sample under examination. In view of possible inhomogeneities in the sample material three independent determinations were carried out.
The melting point was determined to be + 65.6 °C, the latent heat of fusion was determined to be + 20.8 J/mol and the thermodynamic purity was determined to be 97.3 mol %.
Under the conditions of this study, the melting point was determined to be + 65.6 °C.
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