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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Photolysis and hydrolysis are expected to contribute significantly to the overall degradation of zinc bis dimethyldithiocarbamate (CAS No. 137-30-4) in environmental systems, as experimental data showed.

The hydrolysis half-life of the substance in sterile water was 10.4 min at pH 5, 17.67 h at pH 7 and 6.31 d at pH 9 (25°C in the dark). At pH 5 and 9 the major degradation product was carbon disulfide (CS2) while at pH 9 dimethyldithiocarbamic acid (DDC) was mainly observed.

Photodegradation in water was examined at pH 9 (25°C, continuous light cycle). The photolytic half-life of the substance was approx.. 8.7 h at pH 9. Dimethyldithiocarbamic acid (DDC) was the main intermediate transformation product, which was subsequently transformed to N,N-dimethylthioformamide and N,N-dimethylformamide. No CS2 was observed by this transformation pathway.

When applied to soil samples, the substance was found to undergo an accelerated degradation when exposed to light (half-life of 8-8.9 h in irradiated samples vs. 16.2 – 20.5 h in dark controls). Transformation products were observed in both the irradiated samples and the dark controls. The major degradation products measured were thiram, dimethyldithiocarbamic acid (DCC), N,N-dimethylformamide, CO2 and carbon disulfide.