The information in this profile may be out-of-date.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 products containing the compound include Appa, Decemthion, Fesdan, Imidan, Kemolate, Prolate, PMC and Safidon. It is also found in combination with other insecticides such as carbophenothion.

Regulatory Status: Phosmet is a moderately toxic compound, falling in EPA toxicity class II. It is a General Use Pesticide (GUP). Products containing phosmet must bear the Signal Word WARNING on the label. Some tolerances for phosmet in processed foods were revoked by EPA in 1994.

Chemical Class: organophosphate

Introduction: Phosmet is a non-systemic, organophosphate insecticide used on both plants and animals. It is mainly used on apple trees for control of coddling moth, though it is also used on a wide range of fruit crops, ornamentals, and vines for the control of aphids, suckers, mites, and fruit flies. The compound is also an active ingredient in some dog collars. Phosmet is used on approximately 1.1 million acres in the U.S. each year.

Formulation: Not Available

Toxicological Effects:

Ecological Effects:

Environmental Fate:

Physical Properties:

Exposure Guidelines:

Basic Manufacturer:

Zeneca Ag Products
1800 Concord Pike
Wilmington, DE 19897


References for the information in this PIP can be found in Reference List Number 5

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.