Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

The test substance is gas under all environmental conditions. It has a high vapour pressure (513291 Pa) and Henry's Law constant (518.6 Pa m3/mol), and low Log Kow (0.07) and Koc (7.8 L/kg). Consequently, environmental releases will result in virtually all of the substance compartmentalising in the atmosphere. The relatively high apparent water solubility of the substance which is based on its measurement in a closed system suggests that atmospheric deposition to land and water could occur, however due to its high volatility and Henry’s Law constant and low sorption to soil this would likely result in rapid redistribution from both soil and water to air. The substance is stable to hydrolysis and does not biodegrade, but undergoes rapid atmospheric oxidation (atmospheric lifetime = 5.1 days) (Good, et al., 1998) and therefore it will not persist in the environment and does not contribute to ozone depletion or global warming.