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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
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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