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Environmental fate & pathways

Biodegradation in water: screening tests

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Description of key information

Tetramethylthiuram disulfide is not readily biodegradable

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One study investigating the potential for ready biodegradability of tetramethylthiuram disulfide (CAS No. 137-26-8) was available. This test was conducted according to OECD Guideline 301 D (1992): “Ready biodegradability: Closed bottle test”, under GLP conditions. After 28 days, the test compound reached a biodegradation value of 30% (average of the biodegradation values (20 and 40%) corresponding to the 2 mg/L and 10.2 mg/L test concentrations respectively). Thus, as tetramethylthiuram disulfide biodegradation did not reach the pass level of 60%, it can be considered as not readily biodegradable. The results from the toxicity control showed inhibitory effects of thiram in the inoculated bacteria.