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Environmental fate & pathways

Biodegradation in soil

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Administrative data

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Description of key information

o-Cresol degraded with half-live times of 1.6 d for the sandy loam (basic soil) and 5.1 d for the sandy silt loam (acidic soil).

Key value for chemical safety assessment

Half-life in soil:
5.1 d
at the temperature of:
20 °C

Additional information

The degradation behaviour of o-cresol was investigated in two different soils. The first soil (acidic) was a sandy loam with an organic carbon content of 0.94%. The second soil (basic) was a sandy silt loam with an organic carbon content of 3.25%. The loadings of the soils (250 to 500 mg/kg) and the degradation were monitored by an HPLC method. Maintained in the dark at 20°C, the test compound degraded with a half-life time of 1.6 days (basic soil) and 5.1 days (acidic soil). The latter result yields a degradation rate constant of 13.59% per day (first order kinetics)