The information in this profile may be out-of-date. It was last revised in 1996. EXTOXNET no longer updates this information, but it may be useful as a reference or resource.

Please visit the National Pesticide Information Center (NPIC) to find updated pesticide fact sheets. If you don't find a fact sheet related to your question, feel free to call 1-800-858-7378. NPIC is open five days a week from 8:00am to 12:00pm Pacific Time.


Extension Toxicology Network

Pesticide Information Profiles

A Pesticide Information Project of Cooperative Extension Offices of Cornell University, Oregon State University, the University of Idaho, and the University of California at Davis and the Institute for Environmental Toxicology, Michigan State University. Major support and funding was provided by the USDA/Extension Service/National Agricultural Pesticide Impact Assessment Program.

EXTOXNET primary files maintained and archived at Oregon State University

Revised June 1996


Trade and Other Names: Trade names for herbicides containing triclopyr include Access, Crossbow, ET, Garlon, Grazon, PathFinder, Redeem, Rely, Remedy, and Turflon. The herbicide may be mixed with picloram or with 2,4-D to extend its utility range.

Regulatory Status: Some or all applications of the product Access may be classified as Restricted Use. Restricted Use Pesticides (RUPs) may be purchased and used only by certified applicators. It is toxicity class III - slightly toxic, but can cause eye irritation. The product will either have the Signal Word DANGER or CAUTION on the label, depending on the specific formulation. Products labeled DANGER include Garlon 3A, Redeem, and Turflon Amine.

Chemical Class: pyridine compound

Introduction: Triclopyr, a pyridine, is a selective systemic herbicide used for control of woody and broadleaf plants along rights-of-way, in forests, on industrial lands, and on grasslands and parklands. Unlike a similar product, 2,4,5-T, which has been banned in the U.S., dioxin impurities do not occur in triclopyr. Over 70,000 pounds of triclopyr are used annually in the U.S. Triclopyr is commercially available mainly as a triethylamine salt or butoxyethyl ester of the parent compound.

Unless otherwise specified, data presented refer to the technical grade of the parent compound.

Formulation: Triclopyr is commercially available mainly as a triethylamine salt or butoxyethyl ester of the parent compound.

Toxicological Effects:

Ecological Effects:

Environmental Fate:

Physical Properties:

Exposure Guidelines:

Basic Manufacturer:

9330 Zionsville Road
Indianapolis, IN 46268-1054


References for the information in this PIP can be found in Reference List Number 10

DISCLAIMER: The information in this profile does not in any way replace or supersede the information on the pesticide product labeling or other regulatory requirements. Please refer to the pesticide product labeling.