O-isobutyl ethylthiocarbamate

Toxicity to other aquatic organisms

Additional information

Expert Judgement  Thionocarbamate  are used in the mining industry as flotation agents as a  fine collector for minerals such as copper sulfate, lead, zinc, molybdenum and nickel. The  thionocarbamate is the best collector for copper sulfate. The amount of Thionocarbamate  used is very small relative to the quantity of ore treated, being approximately 2 to 50 g/tonne of ore.  The flotation process is fully automated. The process takes place in open tanks . However, the concentration of O-isobutyl ethylthiocarbamate (IBETC)  in the flotation tank is low and, therefore, the release of Carbon monoxide; cardon dioxide; oxides of nitrogen; oxides of sulphur (includes sulphur di and tri oxides)  would be expected to be low. Air monitoring data, although limited and of poor quality, indicate that the atmospheric levels of cardon dioxide; oxides are below 10 ppm in the flotation areas. The risk to workers during the flotation process is considered to be low.  Due to the absence of chemical groups or other structural alerts this substance is not considered to exhibit an high hazard potential.  The results suggest for O-isobutyl ethylthiocarbamate (IBETC)  that direct and indirect exposure of  other aquatic organisms is unlikely. Therefore testing for Toxicity to other aquatic organisms does not need to be performed.