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EC number: 201-052-9
CAS number: 77-73-6
The 96 hour LC50 is 15.7 mg/L. The estimated
LC50 value from TLM QSAR is 6.712 mg/L.
The experimental value was used for the
chemical safety assessment.
An Environmental Agency Japan test following
OECD guideline 203, using semi-static conditions without analytical
confirmation of exposure concentrations showed the 96-hour LC50 to be
4.3 mg/L. This study was unavailable for review but was included in the
OECD SIDS for DCPD.
Bentley et al (1976) tested the toxicity of
dicyclopentadiene to four species of fish. The range of LC50 values
reported within the paper was between 15.7 -31.1 mg/L. The study
followed a method similar to standard guidelines but did not include
analytical confirmation of the exposure concentrations.
A QSAR result has also been included as part
of the weight of evidence, which used the ECOSAR program to derive a
96-hour LC50 of 9.8 mg/L and Target Lipid modelling to derive an
estimated LL50 for this substance is 6.712 mg/L.
The lowest of the measured results which are
considered to be reliable has been conservatively selected as the key
value for this endpoint.
The 96-hour LC50 for freshwater fish is 15.7
mg/L (Bentley et al 1976).
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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