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Physical & Chemical properties

Partition coefficient

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Administrative data

Link to relevant study record(s)

Description of key information

Isomer 1 (alpha.R,1R,6S)- = 5.79, isomer 2 [1a(S*),6b]  (9Cl) = 5.59
The substance has potential for bioaccumulation; the data is relevant for classification in aquatic chronic toxicity hazard class according to Regulation (EC) No.1272/2008 (CLP) criteria (log Kow>4).

Key value for chemical safety assessment

Log Kow (Log Pow):
5.79
at the temperature of:
25 °C

Additional information

Two fully reliable experimental studies, conducted according to a recognized OECD/EC method and under GLP, are available. The slow-stirring method, considered of higher quality than the HPLC, was chosen as key study. The higher value (worst-case) is retained as key data.

The supporting HPLC study shows no difference between the isomers, that elute in a single peak.

Despite the substance was considered as surface-active (please refer to point 4.10), in the tests conditions, no surface-active behaviour is supposed to affect the validity of the two studies.