Registration Dossier
Registration Dossier
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EC number: 205-532-9 | CAS number: 142-29-0
Endpoint summary
Administrative data
Description of key information
Key value for chemical safety assessment
Additional information
The skin irriation study performed with cyclopentene (Smyth 1962) is regarded to be not sufficient for assessment (open application although the substance has a high fugacity, use of a 10 -grade scaling system which is not comparable to the Draize scores, less details on results). However the test substance caused irritating effects on the skin.
Cyclohexene, which is a structurally related substance, also caused irritating effects on the skin (BASF AG 1973) yielding to a classification with R38/GHS skin irritation Cat.2 (GHS Cat.2 is regarded to be warranted due to the scaling observed after 7 and 8 days)
In analogy, cyclopentene is classified with R38/GHS skin irritation Cat. 2
The eye irriation study performed with cyclopentene (Smyth 1962) is regarded to be not sufficient for assessment (use of a 10 -grade scaling system which is not comparable to the Draize scores, less details on results). However the test substance caused eye irritating effects.
Cyclohexene, which is a structurally related substance, also caused only slight eye irritating effects (BASF AG 1973) which do not warrant a classification.
In analogy, cyclopentene is regarded to have no distinct eye irritating properties.
Justification for classification or non-classification
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.
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