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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