Density 1.431 Sensitivity Data May be very irritating to skin, eyes, mucous membranes. Other sources of release include loss during manufacturing, formulation, packaging or disposal of this herbicide. If released to soil, endothall is expected to rapidly biodegrade under aerobic conditions. The half-life of endothall in soil is reported to be 4 to 9 days. Chemical hydrolysis and volatilization are not expected to be significant.
Glutamic acid is a major biotransformation product of endothall under aerobic conditions.
Endothall is not expected to oxidize, chemically hydrolyze, photolyze, volatilize, bioaccumulate or adsorb to suspended solids or sediments in water. If released to the atmosphere, endothall is expected to exist predominantly on particles and should either settle out or wash out in precipitation. It is not expected to chemically react or photolyze in the atmosphere. The most probable routes of human exposure to endothall are inhalation and dermal contact of workers involved in the manufacture, handling or application of endothall. The general public could potentially be exposed through use for lawn weed control.