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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Diss Factsheets

Environmental fate & pathways

Adsorption / desorption

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Administrative data

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Description of key information

Koc values were determined using an accepted calculation method (program KOCWIN v2.00 included in US EPA EPI Suite 4.11). Calculation is based on the Molecular Connectivity Index (MCI) methodology.

Key value for chemical safety assessment

Koc at 20 °C:
117 517

Additional information

Measured (log) Koc values are not available for the the substance. As substitute, values were calculated for the two constituents of the technical product - di- and tri-isopropyl-1,1'-biphenyl - using the program KOCWIN v2.00 included in the estimation tool US EPA EPI Suite vers. 4.11.

For diisopropyl-1,1'-biphenyl, a log Koc of 5.0701 (Koc 117,517) was calculated (estimated from the Molecular Connectivity Index, MCI). With the same methodology, a log Koc of 5.7765 (Koc 597,723) was calculated for tris(1-methylethyl)-1,1'-biphenyl. To characterise the total of the technical product, log Kow of 5.0701 was selected as diisopropylbiphenyl accounts for ca. 80% of the substance.

[LogKoc: 5.0701]