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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 pressure of 134200 Pa at 20 °C (62330 Pa at 0 °C) and subsequently by a high evaporation rate from water to air as indicated by a Henry'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.

One study investigating the effect of chloroethane to terrestrial plants is available. The test investigated the effect of the substance on emergence and growth of the plant species Avena sativa and Lepidum sativum. The plants were exposed to the gas at concentrations of 10 and 100 ppmv in a closed chamber. The test was terminated after 14 days. Avena sativa was not affected by the substance. Whereas the growth of Lepidum sativum was reduced by 20% compared to control. The EC50(14d) for both plant species > 100 ppmv.