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Partition coefficient

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Description of key information

Major components ranging between 2.74 and 4.83 (literature and QSAR).
Potential concern for classification in aquatic chronic toxicity hazard class (log Kow > 4).

Key value for chemical safety assessment

Additional information

No study was conducted on the oil itself.

In a Weight of Evidence approach, literature provided data for five of the six major components:

- cineole log Kow ca 2.74,

- limonene log Kow ca 4.57,

- alpha-pinene, log Kow ca 4.83,

- para-cymene, log Kow ca 4.10,

- terpinolene, log Kow ca 4.47.

For sabinene, no literature data was available, so the dataset was completed with a valid QSAR estimation: log Kow ca 4.64.

As no CSA is required for the tonnage band of concern, no key value was retained (nor calculated weighted value nor worst-case). However, for Classification purpose, the worst case is considered (log Kow > 4).