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Ecotoxicological information

Toxicity to soil microorganisms

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Key value for chemical safety assessment

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Chloroethane is a gaseous substance and thus will mainly distribute to the air if released to the environment. There is no intended release of the substance to soil during its lifecycle. An exposure of the terrestrial compartment is therefore not anticipated.

Due to its gaseous nature chloroethane is characterised by a high vapour pressureof 134200 Pa at 20 °C (62330 Pa at 0 °C) and subsequently by a high evaporation rate from water to air as indicated by aHenry's Law constant of 1124.70 Pa m³/mol calculated for the substance. If the substance is released to the waste water it will rapidly evaporate from the water phase in conventional sewage treatment plants during the primary treatment. The substance will not adsorp to suspended matter or activated sludge as indicated by the low log Pow (1.34) and the correlated log Koc value (<3) . An exposure of soil via sewage sludge application can be excluded.

Thus, an exposure of the terrestrial compartment is not likely due to the physico-chemical properties of the substance and the expected environmental fate.

Furthermore no adverse effects were observed in a study on the toxicity of chloroethane to aquatic microorganisms.