Registration Dossier

Environmental fate & pathways

Phototransformation in water

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Description of key information

The phothlytic breakdown of 2-mercaptobenzothiazole occurs rapidly with a half-life under one hour. The calculated half-life was 27.4 minutes for synthetic humic water and 31.1 minutes for pure water. 2 -Mercaptobenzothiazole was classified as "photolabile". The test was conducted according to the guideline EPA OTS 795.70 (Monsanto, 1989).

Key value for chemical safety assessment

Additional information

SMBT is an organic salt of strong base NaOH and weak acid of MBT and it is solely marketed as aqueous solution. The presence of MBT determines the hazard profile of SMBT aqueous solution; and hence the environmental fate and behavior of MBT is used as read-across approach to support the risk assessment of SMBT.