Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

Biodegradation in water (screening):

Key study:

In an OECD TG 301B study, conducted to GLP, methylene bis(dibutyldithiocarbamate) attained 21% degradation after 28 days and therefore cannot be considered to be readily biodegradable (Safepharm Laboratories Limited, 2004).

Biodegradation in water and sediment:

Based on the use pattern of methylene bis(dibutyldithiocarbamate), intentional releases into the sediment compartment are not expected.  In accordance with Column 2 of Annex IX of the Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH) legislation, if direct and indirect exposure of sediment is unlikely, a biodegradation in water and sediment study does not need to be conducted, therefore the endpoint is being waived. According to the screening study, methylene bis(dibutyldithiocarbamate) is not considered readily biodegradable (Safepharm, 2004).

Biodegradation in soil:

Based on the use pattern of methylene bis(dibutyldithiocarbamate), intentional releases into the soil compartment are not expected.  In accordance with Column 2 of Annex IX of the Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH) legislation, if direct and indirect exposure of sediment is unlikely, a biodegradation in soil study does not need to be conducted, therefore the endpoint is being waived.

According to the screening study, methylene bis(dibutyldithiocarbamate) is not considered readily biodegradable (Safepharm, 2004).