Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

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.

Diss Factsheets

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

Acetylene is expected to partition to the air from water, reducing the potential for exposure. Volatilisation for surface waters will predictably be rapid: calculation based on Henry's Law constant indicates that the volatisation half life will be <6 days in a water body up to10 metres deep (PEDERSEN et al 1995) and similar calculations using the EPISuite v.4.0 model predicts (USEPA 2009) half-lives of 32 minutes and 49 hours in rivers and lakes respectively (1m depth, wind velocity 5 and 0.5 m/sec respectively). If released into surface waters, volatilisation will therefore ensure rapid removal of acetylene into the atmospheric compartment.