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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Ecotoxicological information

Endpoint summary

Administrative data

Description of key information

Additional information

Studies investigating the short-term toxicity of zinc bis dimethyldithiocarbamate (CAS No. 137-30-4) are available for all terrestrial trophic levels and long-term toxicity results are available for vertebrates and invertebrates.  

Results from the short-term toxicity studies on terrestrial organisms revealed acute toxic effects toward earthworms with an LC50 (14 d) of 140 mg a.i./kg dw soil. Furthermore, effects to bird species were observed after acute oral and dietary exposure (LD50 = 97 mg a.i./kg bw and LC50 = 5156 ppm a.i., respectively). The substance showed no effects on survival of honeybees after 48 hours exposure via oral and contact routes (LD50 (48 h) > 100 µg/bee). The substance does not cause adverse effects to plants growth or condition up to the highest concentration tested (9 kg/ha, recalculated to 9.192 mg a.i./kg soil dw) as Tier 1 studies with Ziram WG 76 showed. Furthermore, no short-term toxic effects were caused by the substance to soil microorganisms up to the highest tested concentration of 40.5 mg test item/kg soil dw (LC50 (28 d) > 40.5 mg test item/kg soil dw). 

Chronic tests showed no effects on the earthworm Eisenia fetida (NOEC (55 d) ≥ 10.1 mg a.i./kg soil dw, OECD 222) or effects on mortality and reproduction of Folsomia candida and Hypoaspis aculeifer (NOEC17.1 mg a.i./kg soil dw, OECD 232 and 226).The soil microflora activity resulted into an LC50 (28 d) > 40.5 mg test item/kg soil dw (nominal) and the birds reproduction study revealed a NOEC (20 wk) of 500 mg a.i./kg diet. Chronic toxicity is not expected in terrestrial organisms exposed to zinc bis dimethyldithiocarbamate due to its rapid biodegradation in the soil compartment with half-lives of < 2 days (aerobic) and 14 days (anaerobic).