Fatty acids, C18 unsat, reaction products with triethylenetetramin, tetraethylenepentamine and pentaethylenehexamine

Endpoint summary

Key value for chemical safety assessment

Skin sensitisation

Endpoint conclusion

Endpoint conclusion:

adverse effect observed (sensitising)

Additional information:

Fatty acids C16-18, C18 unsat reaction products with tetraethylenepentamine was found to be sensitising to skin in a GPMT test. These results are valid also for tall oil + TEPA, as Fatty acids C16-18, C18 unsat and Tall oil are only marginally differing in chain lengths distributions, and it is considered that both their reaction products with TEPA are principally the same when evaluating for sensitisation.

The following information is available on sensitising properties of AAI substances: 

TO + DETA	Sensitising: 40% positive reaction in GPMT, i.d. induction 0.1%
TO + DETA	Sensitising: LLNA: EC3: 0.3%.
C16-18, C18 unsat + TEPA	Sensitising: 100% positive reaction in GPMT, i.d. induction 0.1%
TO + Poly(Amide)	Sensitising: 100% positive reaction in GPMT, i.d. induction 0.2%

Based on the available data, all substances in the AAI group should be considered sensitising to skin.

Classification according to CLP (ATP 2) skin sensitiser: Cat.1A (LLNA: EC 3 ≤ 2%; GPMT ≥ 30% positive at ≤ 0.1% i.d. induction or ≥ 60% positive at >0.1% i.d. induction)

Migrated from Short description of key information:

Fatty acids C16-18, C18 unsat reaction products with tetraethylenepentamine  was found to be sensitising to skin in a GPMT test.

Respiratory sensitisation

Endpoint conclusion

Additional information:

There is no information on respiratory sensitisation, but Fatty acids C16-18, C18 unsat reaction products with tetraethylenepentamine was sensitisng to skin.

The likelihood for exposure via inhalation and thus becoming sensitised to AAI, is very low, based on the high boiling point (> 300 °C) and very low vapour pressure (0.00017 mPa at 25°C for DETA based AAI).

Migrated from Short description of key information:

No data.

Justification for classification or non-classification

Various studies with different AAI indicate that these substances can cause dermal sensitisation. Fatty acids C16-18, C18 unsat reaction products with tetraethylenepentamine was sensitisng to skin in a GPMT and should be classified as dermal sensitiser Cat.1A for CLP (Criteria ATP 2, Commission Regulation 286/2011 of 10 March 2011).

The actual risk of sensitisation is probably low, as AAI are corrosive to skin and consequently exposure will be low due to necessary protetive measures to limit dermal exposure.

Also the likelihood for exposure via inhalation and thus becoming sensitised to AAI, is very low, based on the high boiling point (> 300 °C) and very low vapour pressure (0.00017 mPa at 25°C for DETA based AAI).