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You are here: NPIC Home Page Pesticide Ingredients Active Ingredients 2,4-D

2,4-D is a chlorophenoxy herbicide that is also sometimes used as a plant growth regulator. It is used in a wide variety of products in the United States. It controls broadleaf weeds by affecting the growth of the plants' vascular tissue. 2,4-D has a number of chemical forms, including esters and salts. The different chemical forms of 2,4-D affect organisms in different ways.

General Questions about 2,4-D

What is 2,4-D? What are some products that contain 2,4-D? How does 2,4-D work? How might I be exposed to 2,4-D What are some signs and symptoms from a brief exposure to 2,4-D? What happens to 2,4-D when it enter the body? Is 2,4-D likely to contribute to the development of cancer? Has anyone studied non-cancer effects from long-term exposure to 2,4-D? Are children more sensitive to 2,4-D than adults? What happens to 2,4-D in the environment? Can 2,4-D affect birds, fish, and other wildlife?

General Fact Sheet	Pesticides: Testing for Exposure Using the Clinical Laboratory Medical Case Profile	Would I hurt the fish by weeding and feeding the lawn? Q & A
Will this weed killer hurt my grass? Q & A	Would I hurt the fish by weeding and feeding the lawn? Podcast (1:50 min., 3.36MB)

If you have questions about this, or any pesticide-related topic, please call NPIC at 1-800-858-7378 (8:00am - 12:00pm PST), or email at npic@ace.orst.edu.

Related Topics:

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What are pesticides?

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NPIC provides objective, science-based information about pesticides and pesticide-related topics to enable people to make informed decisions. NPIC is a cooperative agreement between Oregon State University and the U.S. Environmental Protection Agency (cooperative agreement #X8-83947901). The information in this publication does not in any way replace or supersede the restrictions, precautions, directions, or other information on the pesticide label or any other regulatory requirements, nor does it necessarily reflect the position of the U.S. EPA.