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Environmental fate & pathways

Biodegradation in soil

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Description of key information

The degradation rate for polysulfides in soil  is  estimated using the default value according to the TGD.

Key value for chemical safety assessment

Additional information

Half life in soil

Experimental data on the biodegradation in soil of polysulfides are not available. The degradation rate is therefore estimated using the default value according to the TGD, assuming that no degradation takes place in the bound phase.

The partitioning of polysulfides in soil was calculated using the default Koc for Non-hydrophobics. Based on this Koc a partitioning coefficients for sediment Kp soil = 0.7 L/kg was calculated (EUSES 2.1.1; Kolck 2010). The suggested half-life for a readily degradable substance with a Kpsoil in the range ≤100 l/kg is 30 days.