... y feeding trials, no ill-effects were observed in dogs receiving 500 mg/kg daily (highest dose treated). Lowest relevant ... value because not hazardous to health at concentrations normally found in drinking water. Other Not mutagenic, not carcinogenic, not teratogenic, not ... annual and perennial grasses and broad-leaved weeds, pre-harvest, in cereals, peas, beans, oilseed rape, flax and mustard, at c ...