Since endothall is not a listed chemical in the Toxics Release Inventory, data on releases during its manufacture and handling are not available. Environmental Fate 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. Its persistence in soil may be prolonged by adsorption to organic matter or by factors inhibiting microbial activity. 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 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. With these BCF values, endothall is not expected to bioaccumulate in aquatic organisms. 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.