PAN Pesticides Database - Pesticide Products

Product Name: Princep 4g granular herbicide

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Identifying information, including U.S. EPA registration number, product registration status, formulation and warning label, as well as links to sources of product labels and MSDS information.
Summary of the toxicity properties of each active ingredient and the percent of each active ingredient in the product.
Approved uses for the product by general use type, pest, and crop or location.
Product registration history, including initial date registered, date cancelled (if applicable), and date registration was transferred (if applicable).
Name, address, and identifying number of the company that registered the product. Name and address of the agent, if applicable.
Complete list of names under which this product is sold. Often a company will register a single product and then sell the same product under many different brand names. The 'Distributor Name' list is a complete list of these names.

Product Identification for Princep 4g granular herbicide

Basic Identification Information About This Product
MSDS and Product Label
U.S. EPA Product Reg No
Product Registration Status
Acute Hazard Warning Label
Restricted Use Product
PAN Bad Actor Product:
No. of names this product is sold under
3 Caution
1 (See bottom of page for complete list of products)

Toxicity for Princep 4g granular herbicide

Summary Toxicity Information for the Active Ingredients in this Product
For detailed chemical information click on the chemical names below

Active Ingredients
Chemical Name
Percent Carcinogen Cholinesterase
Developmental or
Reproductive Toxin
Simazine 4.00 % Unclassifiable No
Indicates high toxicity in the given toxicological category. Indicates no available weight-of-the-evidence assessment. For additional information on toxicity from scientific journals or registration documents, see the "Additional Resources for Toxicity " section of the chemical detail page for each active ingredient.

Other Ingredients in this Product

By U.S. law, only active ingredients (AIs) are reported. In addition to active ingredients, pesticide products may contain one or more "inert" ingredients. Many "inert" ingredients in current use have known adverse human and environmental effects.

U.S. EPA statement on inerts      U.S. EPA list of inerts     NCAP Inerts Report (pdf)


Historic Uses in the U.S. for Princep 4g granular herbicide

Note! This product is now cancelled, when it was registered it was used for the following:


Herbicide , Herbicide terrestrial


Annual broadleaf weeds (preemergence) , Perennial broadleaf weeds (preemergence) , Pigweed (preemergence) , Carpetweed (preemergence) , Carelessweed (preemergence) , Fiddleneck (preemergence) , Chickweed (preemergence) , Knawel (preemergence) , German moss (preemergence) , Common chickweed (preemergence) , Fivehook bassia (preemergence) , Lambsquarters (preemergence) , Common lambsquarters (preemergence) , Russian thistle (preemergence) , Ragweed (preemergence) , Burdock (preemergence) , Spanishneedles (preemergence) , Canada thistle (preemergence) , Flora's paintbrush (preemergence) , Dogfennel (preemergence) , Prickly lettuce (preemergence) , Pineappleweed (preemergence) , Groundsel (preemergence) , Annual morningglory (preemergence) , Shepherdspurse (preemergence) , Tansymustard (preemergence) , Pepperweed (preemergence) , Yellow flower pepperweed (preemergence) , Alyssum (preemergence) , Wild mustard (preemergence) , Turkey mullein (preemergence) , Filaree (preemergence) , Annual grasses (preemergence) , Perennial grasses (preemergence) , Quackgrass (preemergence) , Redtop (preemergence) , Silver hairgrass (preemergence) , Wild oat (preemergence) , Brachiaria (preemergence) , Signalgrass (preemergence) , Smooth brome (preemergence) , Cheat (preemergence) , Downy brome (preemergence) , Orchardgrass (preemergence) , Crabgrass (preemergence) , Junglerice (preemergence) , Barnyardgrass (preemergence) , Watergrass (preemergence) , Silvergrass (preemergence) , Goosegrass (preemergence) , Witchgrass (preemergence) , Fall panicum (preemergence) , Bluegrass (preemergence) , Annual bluegrass (preemergence) , Foxtail (preemergence) , Purpletop (preemergence) , Rattail fescue (preemergence) , Henbit (preemergence) , Burclover (preemergence) , Hop clover (preemergence) , Fireweed (preemergence) , Plantain (preemergence) , Smartweed (preemergence) , Redmaids rock purslane (preemergence) , Common purslane (preemergence) , Florida pusley (preemergence) , Speedwell (preemergence) , Corn speedwell (preemergence) , Nightshade (preemergence) , Puncturevine (preemergence) , Annual ryegrass (preemergence) , Carpet burweed (preemergence) , Spurweed (preemergence)

Crops and Locations

Blackberries (soil treatment) , Blackberries (delayed dormant application) , Boysenberries (soil treatment) , Boysenberries (delayed dormant application) , Loganberries (soil treatment) , Loganberries (delayed dormant application) , Raspberries (soil treatment) , Raspberries (delayed dormant application) , Blueberries (soil treatment) , Blueberries (delayed dormant application) , Cranberries (dormant application) , Cranberries (postharvest application to plants) , Grapefruit (soil treatment) , Oranges (soil treatment) , Christmas tree plantings (soil treatment) , Arborvitae (shelterbelt) (soil treatment) , Arborvitae (plantation) (soil treatment) , Boxelder (shelterbelt) (soil treatment) , Douglas-fir (plantation) (soil treatment) , Douglas-fir (shelterbelt) (soil treatment) , Hemlock (plantation) (soil treatment) , Hemlock (shelterbelt) (soil treatment) , Honeylocust (shelterbelt) (soil treatment) , Juniper (shelterbelt) (soil treatment) , Juniper (plantation) (soil treatment) , White cedar (plantation) (soil treatment) , White cedar (shelterbelt) (soil treatment) , Yew (shelterbelt) (soil treatment) , Knobcone pine (shelterbelt) (soil treatment) , Knobcone pine (plantation) (soil treatment) , Austrian pine (plantation) (soil treatment) , Austrian pine (shelterbelt) (soil treatment) , White fir (plantation) (soil treatment) , White fir (shelterbelt) (soil treatment) , Lodgepole pine (plantation) (soil treatment) , Lodgepole pine (shelterbelt) (soil treatment) , Red pine (plantation) (soil treatment) , Red pine (shelterbelt) (soil treatment) , White spruce (plantation) (soil treatment) , White spruce (shelterbelt) (soil treatment) , Bishop pine (plantation) (soil treatment) , Bishop pine (shelterbelt) (soil treatment) , Monterey pine (plantation) (soil treatment) , Monterey pine (shelterbelt) (soil treatment) , Scotch pine (plantation) (soil treatment) , Scotch pine (shelterbelt) (soil treatment) , Holly (shelterbelt) (soil treatment) , Russian olive (shelterbelt) (soil treatment) , Red spruce (plantation) (soil treatment) , Red spruce (shelterbelt) (soil treatment) , American elm (shelterbelt) (soil treatment) , Balsam fir (plantation) (soil treatment) , Balsam fir (shelterbelt) (soil treatment) , Fraser fir (plantation) (soil treatment) , Fraser fir (shelterbelt) (soil treatment) , Norway spruce (plantation) (soil treatment) , Norway spruce (shelterbelt) (soil treatment) , White pine (plantations) (soil treatment) , White pine (shelterbelt) (soil treatment) , Caragana (shelterbelt) (soil treatment) , Blue spruce (plantation) (soil treatment) , Blue spruce (shelterbelt) (soil treatment) , Siberian elm (shelterbelt) (foliar treatment) , Red oak (shelterbelt) (soil treatment) , Bermudagrass (golf fairways) (soil treatment) , Bermudagrass (lawns) (soil treatment) , Bermudagrass (ornamental turf) (soil treatment) , Centipedegrass (golf fairways) (soil treatment) , Centipedegrass (lawns) (soil treatment) , Centipedegrass (ornamental turf) (soil treatment) , St. augustinegrass (ornamental turf) (soil treatment) , St. augustinegrass (golf fairways) (soil treatment) , Zoysiagrass (lawns) (soil treatment) , Zoysiagrass (ornamental turf) (soil treatment) , Zoysiagrass (golf fairways) (soil treatment) , Barberry (nursery) , Caragana (nursery) , Cotoneaster (nursery) , Holly (nursery) , Mahonia (nursery) , Oleander (nursery) , Oregongrape (nursery) , Pieris (nursery stock) , Bottlebrush (nursery) , Bush honeysuckle (nursery) , American elm (nursery) , Arborvitae (nursery stock) , Austrian pine (nursery stock) , Balsam fir (nursery stock) , Blue spruce (nursery) , Boxelder (nursery) , Dogwood (nursery) , Douglas-fir (nursery) , Eucalyptus (nursery) , Fraser fir (nursery) , Hemlock (nursery) , Honeylocust (nursery) , Juniper (nursery) , Lodgepole pine (nursery stock) , Mugho pine (nursery) , Norway spruce (nursery) , Palm (nursery) , Red-cedar (nursery) , Red oak (nursery) , Red pine (nursery) , Red spruce (nursery) , Russian olive (nursery) , Scotch pine (nursery) , Siberian elm (nursery) , White cedar (nursery) , White pine (nursery) , White spruce (nursery) , Yew (nursery) , Monterey pine (nursery stock) , White fir (nursery stock) , Carob (ornamental) (nursery stock) , Knobcone pine (nursery stock) , Bishop pine (nursery stock) , Farm buildings (outdoor) , Farm equipment (outdoor) , Farm roads (soil treatment) , Agricultural (noncrop areas) (soil treatment) , Farm fuel storage areas (soil treatment) , Noncrop areas (soil treatment) , Rights-of-way (highway) (soil treatment) , Roadsides (soil treatment) , Rights-of-way (railroad) (soil treatment) , Industrial sites (soil treatment) , Tank farms (petroleum) (soil treatment) , Lumber yards (soil treatment) , Fencerows (soil treatment)

U.S. Product Registration History for Princep 4g granular herbicide

U.S. EPA Product Reg No:
Product Registration Status:
Approval Date:
Nov 10, 1958  
Cancellation Date:
Oct 9, 1992  
Cancel/Transfer Reason:
Company request

Company and Agent Information for Princep 4g granular herbicide

Manufacturer Agent Distributor
Syngenta crop protection, llc
Po box 18300
Greensboro, NC 27419
Company Number: 000100
No Agent, See Company Info. No Additional Distributor, See Company Info.

Distributor Names for Princep 4g granular herbicide

Product names Distributor Product Type Approval Date Cancellation Date
Princep 4g granular herbicide Syngenta crop protection, llc Parent Product Nov 10, 1958 Oct 9, 1992
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