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EC number: 201-052-9 | CAS number: 77-73-6
The melting point of high purity DCPD is 32.2°C. The melting point of commercial DCPD is <20°C, with melting points of <0°C at <85% purity, rising to 10°C at >90% purity and >30°C at 100% purity.
The Pocket Guide presents key information and data from the US Department of Health and Human Services and as such is a reliable governmental source of information and is considered a suitable key study source for this endpoint (NIOSH 2005). This is supported by a melting/ freezing point of between 32 and 34°C from WHO ICSC (2005). No information on the primary source of the data or the methods used is available. However, this information is taken from a reliable peer reviewed database and so can be considered reliable and suitable for use.
Information on the melting/ freezing points of commercial DCPD has been taken from company specific pro-forma. For the data from DOW (2016), there is no information on the GLP status or the methods used. The melting point of commercial (94%) DCPD from proprietary data from Shell (2016) was non-GLP but conducted according to guideline ASTM D1493. The results are considered suitable for use as supporting studies for this endpoint as they are taken from company specific datasheets.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
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