Registration Dossier
Registration Dossier
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EC number: 222-883-3 | CAS number: 3648-18-8
Melting point / freezing point
Administrative data
Link to relevant study record(s)
Description of key information
Hansen (2011a), OECD 102, EU Method A.1, the freezing point of the test material was determined to be 9.5 °C at 1018.2 hPa.
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 9.5 °C
Additional information
In the key study (Hansen 2011a), the freezing point of the test material was determined according to standardised guidelines OECD 102 and EU Method A.1. During the study, the test material was placed in closed test tubes and observed for crystallization over a range of temperatures controlled by a tempered bath. The test material was studied with and without the addition of seed crystals. Under the conditions of the test, the freezing point was determined to be 9.5 °C with and without the addition of seed crystals. A reliability score of 1 was assigned, in accordance with the criteria for assigning data quality in line with the principles described by Klimisch (1997).
Six additional sources have been provided as supporting information:
Chemical Book (2012) Guide Chem (2012) and Look Chem (2012), all list the product specification of the registered substance. No information relating to the method of generating the data or the original source were provided accordingly, a reliability score of 4 was assigned, in line with the principles for data quality as described by Klimisch (1997). In each source, the substance was reported to melt between 17 and 18 °C.
Minsker (1971) is a literature source which reported the melting point of the test material to be 20 °C. Arkema (2007) is a material safety data sheets available on the registered substance, which reports the melting/freezing point to be 65 °F (18 °C) and the pour point to be 35 °F (1.7 °C). The reported temperatures were presented as short abstracts with little or no information regarding the methodology adopted. Each was assigned a reliability score of 4, in accordance with the criteria for assigning data quality in line with the principles described by Klimisch (1997).
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