Registration Dossier
Registration Dossier
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The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
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EC number: 202-851-5 | CAS number: 100-42-5
Endpoint summary
Administrative data
Description of key information
Additional information
Once in the environment, a number of processes can affect the distribution and fate of styrene. The dominant processes are photooxidation, volatilisation and biotransformation. The majority of styrene released into the environment is expected to reach the atmosphere due to its high potential for volatilisation. Styrene is rapidly degraded in the atmosphere by reaction with hydroxyl radicals and tropospheric ozone. Volatilisation from soil and water is rapid and styrene is readily biodegradable. Some adsorption to soils and sediments may occur. Styrene has a moderate mobility in soil. The physical removal of airborne styrene by processes such as wet and dry deposition is thought to be relatively minor, and long-range transport of styrene is considered insignificant, based on its short atmospheric half-life.
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