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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

In a key skin sensitisation test following no specific guideline, but similar to OECD guideline 429, N-ethylmorpholine was found to be not sensitising (Holsapple MP, Wiescinsky CM, 1997).

Key value for chemical safety assessment

Skin sensitisation

Endpoint conclusion
Endpoint conclusion:
no adverse effect observed (not sensitising)
Additional information:

The skin sensitisation potential of N-ethylmorpholine was investigated based on principles of the OECD guideline 429 (LLNA) approach with female Balb/c mice. Five animals were tested by dose group in four separate trials including 1 vehicle control group and 3 positive control groups. Solutions with 30% vol/vol test substance in acetone/olive oil (4:1) were applied to the ear once daily for three consecutive days. The test item elicited an SI value <3 and is considered to be not skin sensitising.


Short description of key information:
In a key skin sensitisation test following no specific guideline, but similar to OECD guideline 429, N-ethylmorpholine was found to be not sensitising (Holsapple MP, Wiescinsky CM, 1997).

Justification for selection of skin sensitisation endpoint:
Only one reliable study available

Respiratory sensitisation

Endpoint conclusion
Endpoint conclusion:
no study available

Justification for classification or non-classification

Based on the available data and according to the criteria of the CLP Regulation (EC) 1272/2008, NEM should not be classified for Skin Sensitisation.