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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

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Physical & Chemical properties

Partition coefficient

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Description of key information

The partition coefficient log Pow ≥ 6.0 at temperature 30 °C, pH = 2.5.

Key value for chemical safety assessment

Additional information

The octanol-water partition coefficient of the substance fatty acids, hydrogenated tallow, distn. residues (CAS No. 70084 -84 -5) was determined according to EU Method A.8 and OECD Guideline 117 (HPLC Method). The result obtained was log Pow from 0.814 to > 6.5, however using area normalization, 93.7% gave a log Pow of greater than or equal to 6.0. QSAR data for main single constituents of the substance (EPISUITE KOWWIN v1.68; Rekker method according to D'Amboise and Hanai, 1982) are in the range between 6.96 (KOWWIN, palmitic acid C16) and 8.23 (Rekker, stearic acid C18) and thus they are supporting.