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Partition coefficient

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Description of key information

Partition coefficient data was not available for any of the streams within this Category. However as the category consists of mainly C4 hydrocarbons, data were read across from hydrocarbon C4 substances (CAS numbers 107-01-7: log Pow 2.31 to 2.33, 106-98-9: log Pow 2.40). All information came from a peer reviewed handbook (Hansch, 1995). The log partition coefficient range for this Category was determined as 2.31 - 2.4.

The mean of the log Pow values for the category is 2.35 at 20°C and this has been used to complete the 'key value for chemical safety assessment'.

Key value for chemical safety assessment

Log Kow (Log Pow):
at the temperature of:
20 °C

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