Ethanol, 2,2'-iminobis-, N-(C16-18 and C18-unsatd. alkyl) derivs.

Endpoint summary

Key value for chemical safety assessment

Skin sensitisation

Endpoint conclusion

Endpoint conclusion:

no adverse effect observed (not sensitising)

Additional information:

There is no skin sensitisation data available for 2,2’-(C16-18 (even numbered, C18 unsaturated) alkyl imino) diethanol CAS No 1218787-32-6. There is however data available for read across from another member of the primary fatty amine ethoxylates family , (Z)-2,2’-(Octadec-9-enylimino)bisethanol CAS 13127-82-7. These two substances have similar carbon chain distributions and are both corrosive to the skin, this makes it difficult to perform animal test for skin sensitisation. As this study is available it is not scientifically justified on animal welfare grounds to perform a study on this test substance

The potential of the test item CECAJEL 210 (batch No. 9194) (Z)-2,2’-(Octadec-9-enylimino)bisethanol CAS 13127-82-7 to induce delayed contact hypersensitivity was evaluated in guinea pigs according to the maximization method of Magnusson and Kligman and to OECD (No. 406, 17th July 1992) and EC (96/54/EEC, B.6, 30th July 1996) guidelines. The study was conducted in compliance with the principles of Good Laboratory Practice Regulations.

Based on preliminary testing, where only a dose of 0.1% of the test substance was well tollerated with acceptable effects at the injection site, this concentration was used for the intradermal induction the test item at the concentration of 0.1% in corn oil (treated group) or vehicle alone (control group), the test item at the concentration of 0.1% in a mixture FCA/0.9% NaCl (50/50, w/w) (treated group) or vehicle at the concentration of 50% (w/v) in a mixture FCA/0.9% NaCl (50/50, v/v) (control group) were administered.

Then on day 8 the topical induction was the animals of the treated group received the test item at the concentration of 10% (w/w) in ethanol/water (80/20) to the same test site, which was then covered by an occlusive dressing for 48 hours.

As the doses used were selected based on the criteria in the OECD guideline the study is considered to be valid.

No systemic clinical signs and no deaths were noted during the study. No relevant cutaneous reactions were observed after the challenge application.

Under the experimental conditions and according to the maximization method of Magnusson and Kligman, the test substance CECAJEL 210 (batch No. 9194) (Z)-2,2’-(Octadec-9-enylimino)bisethanol CAS 13127-82-7, does not induce delayed contact hypersensitivity in guinea pigs.

Migrated from Short description of key information:

There is no skin sensitisation data available for 2,2’-(C16-18 (even numbered, C18 unsaturated) alkyl imino) diethanol CAS No 1218787-32-6.  There is however data available for read across from another member of the primary fatty amine ethoxylates family , (Z)-2,2’-(Octadec-9-enylimino)bisethanol CAS 13127-82-7.

The potential of the test item CECAJEL 210 (batch No. 9194) (Z)-2,2’-(Octadec-9-enylimino)bisethanol CAS 13127-82-7 to induce delayed contact hypersensitivity was evaluated in guinea pigs according to the maximization method of Magnusson and Kligman and to OECD (No. 406, 17th July 1992) and EC (96/54/EEC, B.6, 30th July 1996) guidelines to GLP.  CECAJEL 210 (batch No. 9194) (Z)-2,2’-(Octadec-9-enylimino)bisethanol CAS 13127-82-7, did not induce delayed contact hypersensitivity in guinea pigs.

Respiratory sensitisation

Endpoint conclusion

Endpoint conclusion:

no adverse effect observed (not sensitising)

Additional information:

There are no guidelines for an animal test for respiratory sensitisation, however in general respiratory sensitisers and also skin sensitisers. The lack of any indication of skin sensitisation in the OECD 406 GLP compliant study on CECAJEL 210 (batch No. 9194) (Z)-2,2’-(Octadec-9-enylimino)bisethanol CAS 13127-82-7, indicates that it is unlikely to be a respiratory sensitiser. This data is also considered applicable by read across to the chemicals similar 2,2’-(C16-18 (even numbered, C18 unsaturated) alkyl imino) diethanol CAS No 1218787-32-6.

Migrated from Short description of key information:

There are no guidelines for an animal test for respiratory sensitisation, however in general respiratory sensitisers are also skin sensitisers.  The lack of any indication of skin sensitisation in the OECD 406 GLP compliant study on CECAJEL 210 (batch No. 9194) (Z)-2,2’-(Octadec-9-enylimino)bisethanol CAS 13127-82-7, indicates that it is unlikely to be a respiratory sensitiser.   This data is also considered applicable by read across to the chemicals similar 2,2’-(C16-18 (even numbered, C18 unsaturated) alkyl imino) diethanol CAS No 1218787-32-6.

Justification for classification or non-classification

There is no skin sensitisation data available for 2,2’-(C16-18 (even numbered, C18 unsaturated) alkyl imino) diethanol CAS No 1218787-32-6. There is however data available for read across from another member of the primary fatty amine ethoxylates family , (Z)-2,2’-(Octadec-9-enylimino)bisethanol CAS 13127-82-7. These two substances have similar carbon chain distributions and are both corrosive to the skin, this makes it difficult to perform animal test for skin sensitisation. As this study is available it is not scientifically justified on animal welfare grounds to perform a study on this test substance. 

CECAJEL 210 ((Z)-2,2’-(Octadec-9 -enylimino)bisethanol CAS 13127 -82 -7) was not found to be a skin sensitiser when tested in the OECD 406 study, this indicates that it is unlikely to posses any significant potential for respiratory sensitisation. The physical form of this substance a liquid with a low vapour pressure means inhalation exposure will be minimal. Based on this information it is not classified as a respiratory sensitiser