RIFM fragrance ingredient safety assessment, 2-ethyl-5-methoxybicyclo[2.2.1]heptane, CAS registry number 122795-41-9

A. M. Api, D. Belsito, D. Botelho, M. Bruze, G. A. Burton, J. Buschmann, M. L. Dagli, M. Date, W. Dekant, C. Deodhar, M. Francis, Allison Fryer, L. Jones, K. Joshi, S. La Cava, A. Lapczynski, D. C. Liebler, D. O'Brien, A. Patel, T. M. PenningG. Ritacco, J. Romine, N. Sadekar, D. Salvito, T. W. Schultz, I. G. Sipes, G. Sullivan, Y. Thakkar, Y. Tokura, S. Tsang

Research output: Contribution to journalShort survey

Abstract

4H-4a,9-Methanoazuleno[5,6-d]-1,3-dioxole, octahydro-2,2,5,8,8,9a-hexamethyl-, (4aR,5R,7aS,9R) (CAS # 211299-54-6) was evaluated for genotoxicity, repeated dose toxicity, reproductive toxicity, local respiratory toxicity, phototoxicity/photoallergenicity, skin sensitization, and environmental safety. Data from 4H-4a,9-methanoazuleno[5,6-d]-1,3-dioxole, octahydro-2,2,5,8,8,9a-hexamethyl-, (4aR,5R,7aS,9R) show that it is not genotoxic, and that there are no safety concerns for skin sensitization under the current, declared levels of use. Data from 4H-4a,9-methanoazuleno[5,6-d]-1,3-dioxole, octahydro-2,2,5,8,8,9a-hexamethyl-, (4aR,5R,7aS,9R) provide a calculated MOE >100 for the repeated dose toxicity endpoint. The reproductive and local respiratory toxicity endpoints were evaluated using the TTC for a Cramer Class III material, and the exposure to 4H-4a,9-methanoazuleno[5,6-d]-1,3-dioxole, octahydro-2,2,5,8,8,9a-hexamethyl-, (4aR,5R,7aS,9R) is below the TTC (0.0015 mg/kg/day and 0.47 mg/day, respectively). The phototoxicity/photoallergenicity endpoints were evaluated based on UV spectra; 4H-4a,9-methanoazuleno[5,6-d]-1,3-dioxole, octahydro-2,2,5,8,8,9a-hexamethyl-, (4aR,5R,7aS,9R) is not expected to be phototoxic/photoallergenic. For the environmental endpoints, 4H-4a,9-methanoazuleno[5,6-d]-1,3-dioxole, octahydro-2,2,5,8,8,9a-hexamethyl-, (4aR,5R,7aS,9R) is not PBT as per the IFRA Environmental Standards, and its risk quotients (i.e., PEC/PNEC) for the aquatic environment based on its current volume of use in Europe and North America are <1.

Original languageEnglish (US)
Pages (from-to)S90-S99
JournalFood and Chemical Toxicology
Volume127
DOIs
StatePublished - May 15 2019

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ASJC Scopus subject areas

  • Food Science
  • Toxicology

Cite this

Api, A. M., Belsito, D., Botelho, D., Bruze, M., Burton, G. A., Buschmann, J., Dagli, M. L., Date, M., Dekant, W., Deodhar, C., Francis, M., Fryer, A., Jones, L., Joshi, K., La Cava, S., Lapczynski, A., Liebler, D. C., O'Brien, D., Patel, A., ... Tsang, S. (2019). RIFM fragrance ingredient safety assessment, 2-ethyl-5-methoxybicyclo[2.2.1]heptane, CAS registry number 122795-41-9. Food and Chemical Toxicology, 127, S90-S99. https://doi.org/10.1016/j.fct.2019.01.031