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Adsorption / desorption

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Description of key information

The predicted log Koc of representative constituents of this category with KOCWIN range from 0.6 to 2.79. It is not feasible to perform simulation tests on complex, volatile UVCB. 

Key value for chemical safety assessment

Additional information

Log additional adsorption / desorption values of 1,3-butadiene for sediment, suspended matter and soil of 2.58, 5.16 and 1.03 L/kg respectively are reported in the EU RAR (2002).

The log Koc of representative constituents of this category has been predicted using the EPISUITE v4.11 KOCWIN (2017) program, which uses methodology described by Sahljic et al., (1995) and Meylan et al. (1995). The predicted log Koc for this category is 0.6 to 2.79.

Constituent Name

CAS No.

log Koc (Kow)

log Koc (MCI)

Benzene

000071-43-2

1.85

2.16

But-1-ene

000106-98-9

2.08

1.6

But-2-ene, cis-

000590-18-1

2

1.6

But-2-ene, trans-

000624-64-6

2

1.6

Buta-1,3-diene

000106-99-0

1.73

1.6

Butane

000106-97-8

2.51

1.6

Carbon Monoxide

000630-08-0

1.54

0.6

Ethane 000074-84-0 1.57 1.12
Ethene  [aka Ethylene] 000074-85-1 0.98 0.98
Methane 000074-82-8 0.946 0.6
Pentane 000109-66-0 2.79 2.04
Prop-1-ene 000115-07-1 1.54 1.34
Prop-1-ene, 2-methyl- 000115-11-7 2.03 1.5
Propane 000074-98-6 2.05 1.34
Propane, 2-methyl- 000075-28-5 2.39 1.5

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