Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Administrative data

Description of key information

N-(n-octyl)-2-pyrrolidinone has been found to be corrosive to skin and severely irritating to eyes. It is classified as R34/H314.

Key value for chemical safety assessment

Skin irritation / corrosion

Endpoint conclusion
Endpoint conclusion:
adverse effect observed (corrosive)

Eye irritation

Endpoint conclusion
Endpoint conclusion:
adverse effect observed (irritating)

Additional information

The eye irritation study provided by ECHA in the migrated NONS file demonstrates that N-(n-octyl)-2 -pyrrolidinone is found to be irritating to eyes and should be classified with the R41 risk phrase or H318 hazard phrase.

Four skin irritation/corrosion studies have been provided by ECHA in the migrated NONS file. These all show that N-(n-octyl)-2 -pyrrolidinone is corrosive and should be classified with the R34 risk phrase or H314 hazard phrase.

N-(n-octyl)-2 -pyrrolidinone is classified as Skin Corr. 1b, or R34: Corrosive.

Effects on skin irritation/corrosion: corrosive

Effects on eye irritation: highly irritating

Justification for classification or non-classification

In the eye irritation study the maximum score for chemosis was 3.17, cornea opacity 1.33 and iris lesion 0.83. The damage to the eye persisted to the end of the test. Due to the irreversibility of the effects N-(n-octyl)-2-pyrrolidinone should be classified as R41 risk of serious damage to eyes or H318 causes serious eye damage (Eye Damage 1).

In the skin irritation studies N-(n-octyl)-2-pyrrolidinone was found to be corrosive and should be labelled R34 causes burns or H314 causes severe skin burns and eye damage.

Due to the labelling of R34/H314, R41/H318 is not necessary since this is implicit in the classification.