Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Abiotic degradation

Tungsten is a stable element and cannot degrade chemically. It can however, sometimes reversibly, participate in numerous chemical reactions that can proceed under a wide range of common environmental conditions. Thereby, different chemical compounds containing tungsten can be formed and also cease to exist, but the process of degradation is not a relevant fate pathway for such compounds (ATSDR, 2005). Although no data were available for tungsten trioxide, degradation is not relevant for this substance as an inorganic metal compound.

Biotic degradation

In accordance with column 2 of REACH Annex VII, a test for ready biodegradability does not need to be conducted, as the substance is inorganic. The process of biodegradation is not a relevant fate pathway for inorganic tungsten compounds such as this substance.

Additional information