Endothall (3,6-endoxohexahydrophthalic acid) is used as an

herbicide Herbicides (, ), also commonly known as weedkillers, are substances used to control undesired plants, also known as weeds.EPA. February 201Pesticides Industry. Sales and Usage 2006 and 2007: Market Estimates. Summary in press releasMain page fo ...

for both

terrestrial Terrestrial refers to things related to land or the planet Earth. Terrestrial may also refer to: * Terrestrial animal, an animal that lives on land opposed to living in water, or sometimes an animal that lives on or near the ground, as opposed to ...

and aquatic plants. It is used as an aquatic herbicide for submerged aquatic plants and algae in lakes, ponds and irrigation canals. It is used as a

desiccant A desiccant is a hygroscopic substance that is used to induce or sustain a state of dryness (desiccation) in its vicinity; it is the opposite of a humectant. Commonly encountered pre-packaged desiccants are solids that absorb water. Desiccant ...

on potatoes, hops, cotton, clover and alfalfa. It is used as a

biocide A biocide is defined in the European legislation as a chemical substance or microorganism intended to destroy, deter, render harmless, or exert a controlling effect on any harmful organism. The US Environmental Protection Agency (EPA) uses a slig ...

to control mollusks and algae in

cooling towers A cooling tower is a device that rejects waste heat to the atmosphere through the cooling of a coolant stream, usually a water stream to a lower temperature. Cooling towers may either use the evaporation of water to remove process heat and ...

. The chemical formula for endothall is C₈H₁₀O₅. Its

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(CAS) name is 7-oxabicyclo .2.1eptane-2,3-dicarboxylic acid. Endothall is an organic acid but is used as the dipotassium salt or the mono-''N'',''N''-dimethylalkylamine salt. Endothall is considered safe in drinking water by the

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up to a maximum contaminant level of 0.1 mg/L (100 ppb). Some people who drink water contaminated by endothall above the maximum contaminant level set by the EPA for many years may experience stomach or intestinal problems. Endothall is chemically related to

cantharidin Cantharidin is an odorless, colorless fatty substance of the terpenoid class, which is secreted by many species of blister beetles. It is a burn agent or a poison in large doses, but preparations containing it were historically used as aphrodisiac ...

. both compounds are

protein phosphatase 2A Protein phosphatase 2A may refer to: * Protein phosphatase 2 Protein phosphatase 2 (PP2), also known as PP2A, is an enzyme that in humans is encoded by the ''PPP2CA'' gene. The PP2A heterotrimeric protein phosphatase is ubiquitously expressed, ...

inhibitors.

References

* * http://www.apms.org/japm/vol08a/v8p50.pdf * http://dnr.wi.gov/lakes/plants/factsheets/EndothallFactsheet.pdf {{Herbicides Herbicides Dicarboxylic acids Ethers Oxygen heterocycles Phosphatase inhibitors

See also

References