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Description of key information

Key value for chemical safety assessment

Skin sensitisation

Endpoint conclusion
Endpoint conclusion:
adverse effect observed (sensitising)
Additional information:
The key study is a local lymph node assay performed with major constituent limonene which was read across to mandarin oil. The study was performed in CBA/Ca strain mice according to OECD guideline 429 and in compliance with GLP.

Mean DPM for 0, 10, 25, 50, 75 or 100% d-limonene were observed to be 2511, 3319, 8554, 9916, 22063 or 16259 dpm, respectively. Stimulation index for 10, 25, 50, 75 or 100% d-limonene were calculated to be 1.3, 3.4, 4.0, 8.8 or 6.5, respectively. The estimated concentration giving rise to a 3 fold increase in lymphocyte proliferation (EC3) was 22% v/v (5500 µg/cm2). No increase in visual levels of irritancy to the ear skin was observed during the study.

Under the test conditions, d-limonene is classified as ‘R43 May cause sensitisation by skin contact’, according to the criteria of Annex VI to the Directive 67/548/EEC and ‘Category 1’ according to the CLP Regulation (EC) N° (1272-2008).

Migrated from Short description of key information:
Read across based on d-limonene content: sensitising

Justification for classification or non-classification

Based on the skin sensitising properties of the major constituent of mandarin oil, d-limonene, mandarin oil has to be labelled as skin sensitiser in accordance with the criteria outlined in Annex VI of 67/548/EEC and Annex I of 1272/2008/EC (CLP/EU-GHS)