iodine supplement for thyroid_formamide use

3. Domestic and foreign laws and regulations
The U.S. Environmental Protection Agency (U.S. EPA) recommends that the value of dichloroethyl ether in lake water and rivers should be limited to less than 0.03 ppm to prevent health hazards caused by drinking or eating contaminated water sources. Any release of more than 10 pounds of dichloroethyl ether into the environment must be notified.