2.1 Label Components & Registration Numbers

Key Takeaways

  • The pesticide label is a legally binding federal document under FIFRA Section 12(a)(2)(G); applying a pesticide in a manner inconsistent with its labeling is a direct violation of federal and North Carolina law ('The Label is the Law').
  • Every pesticide has three distinct names: the Brand/Trade Name (marketing name), the Common Name (simplified chemical identifier approved by ISO/ANSI), and the Chemical Name (complex IUPAC/CAS chemical formula structure).
  • The Ingredient Statement must list active ingredients (AI) individually by common/chemical name with exact percentages by weight, while inert/other ingredients are listed as an aggregate percentage, summing to exactly 100.0%.
  • The EPA Registration Number identifies the primary manufacturer and product formulation (plus any supplemental distributor), whereas the EPA Establishment Number identifies the specific physical facility where the product was manufactured and packaged.
  • Restricted Use Pesticides (RUPs) require a prominent, mandatory statement banner at the top of the front panel restricting purchase and application to certified applicators or individuals under their direct supervision.
Last updated: August 2026

2.1 Label Components & Registration Numbers

Quick Answer: The pesticide label is a legally binding document under federal (FIFRA §12(a)(2)(G)) and North Carolina state law (NCGS §143-443). Applicators must know the distinction between the Brand Name (trade name), Common Name (standard chemical agent name), and Chemical Name (formal IUPAC structure). The EPA Registration Number (e.g., 1234-567 or 1234-567-8901) confirms federal approval and identifies the manufacturer, product, and distributor, while the EPA Establishment Number (e.g., 1234-NC-001) identifies the physical production facility. Restricted Use Pesticides (RUPs) must feature a bold, boxed warning banner across the top of the front panel.


The Legal Authority of the Pesticide Label ("The Label is the Law")

Under the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA), a pesticide label is not a set of informal recommendations or product guidelines—it is a binding legal document. Applying a pesticide in a manner inconsistent with its labeling is a violation of federal law (FIFRA Section 12(a)(2)(G)) and North Carolina law enforced by the North Carolina Department of Agriculture and Consumer Services (NCDA&CS) Structural Pest Control and Pesticides Division under the North Carolina Pesticide Law of 1971 (02 NCAC 09L).

Label compliance applies to all phases of pesticide handling, including:

  • Mixing, loading, and handling concentrates
  • Target application sites, crops, and target pests
  • Application methods, equipment parameters, and rates
  • Storage, container containment, and rinsate disposal
  • Personal Protective Equipment (PPE) and worker notification
  • Restricted-Entry Intervals (REI) and Pre-Harvest Intervals (PHI)

Violations of label instructions can result in state administrative civil penalties of up to $2,000 per violation under NCDA&CS authority, federal civil fines, criminal prosecution, and immediate license suspension or revocation.


Pesticide Nomenclature: Brand vs. Common vs. Chemical Names

Every commercial pesticide formulation contains one or more active ingredients identified on the label by up to three different names. Understanding these distinctions is critical for calculating active ingredient concentrations, preventing duplicate applications, and managing chemical resistance.

Name TypeDefinition & AuthorityPractical Example 1Practical Example 2
Brand / Trade NameThe commercial trademarked name chosen by the manufacturer or formulator for marketing. Often includes formulation codes (e.g., EC, WP, WDG) and numeric concentration indicators.Roundup PRO® ConcentrateSevin® 4F
Common NameA simplified, officially recognized generic name assigned to the chemical compound by the International Organization for Standardization (ISO) or the American National Standards Institute (ANSI).glyphosatecarbaryl
Chemical NameThe complete scientific chemical description identifying the atomic structure and molecular composition according to IUPAC or Chemical Abstracts Service (CAS) nomenclature.N-(phosphonomethyl)glycine1-naphthyl methylcarbamate

Why Certified Applicators Focus on Common Names

Manufacturers frequently change brand names, market identical active ingredients under multiple trade names for different commodity markets (e.g., turf vs. row crops), or alter product formulations while retaining a legacy brand name. For example:

  • Glyphosate is sold under dozens of brand names (Roundup®, Touchdown®, Accord®, Ranger Pro®) with differing surfactant loads and active ingredient concentrations.
  • Carbaryl is marketed as Sevin®, Carbaryl 4L, and Dreadnaught®.
  • An applicator who only memorizes brand names risks applying incompatible formulations, miscalculating application rates, or failing to rotate chemical Modes of Action (MOA) to prevent pest resistance.

Ingredient Statement & Net Contents

The Ingredient Statement is a mandatory section that must appear prominently on the front panel of every pesticide label. It provides a precise chemical accounting of what is inside the container.

ACTIVE INGREDIENTS:
  Glyphosate, N-(phosphonomethyl)glycine, in the form of its isopropylamine salt* ... 41.0%
OTHER (INERT) INGREDIENTS: ........................................................... 59.0%
TOTAL: .............................................................................. 100.0%

*Contains 480 grams per liter or 4.0 pounds per U.S. gallon of the active ingredient glyphosate.

Mandatory Ingredient Statement Rules

  1. Active Ingredients (AI): The chemical components responsible for controlling, suppressing, repelling, or mitigating the target pest. Active ingredients must be listed individually by percentage by weight, showing the common name and/or chemical name.
  2. Inert (Other) Ingredients: Substances added to the active ingredient to enhance stability, mixing, delivery, shelf-life, or safety (e.g., emulsifiers, solvents, carriers, wetting agents, anti-foaming compounds). Inert ingredients do not have to be named individually (protected as trade secrets), but their total aggregate percentage by weight must be declared.
  3. Total Percentage: Active and inert percentages must always add up to exactly 100.0%.
  4. Pounds per Gallon Declaration: For liquid formulations, the statement must specify the actual weight of active ingredient per unit volume (e.g., "Contains 4.0 lbs of active ingredient per gallon"), which is required for equipment calibration and tank-mix calculations.

Net Contents

The label must clearly state the total volume (liquid: gallons, quarts, pints, fluid ounces) or total weight (dry: pounds, ounces, kilograms) contained in the package. Applicators use the net contents to verify inventory, calculate total active ingredient purchased, and verify tank charges.


Deciphering EPA Registration & Establishment Numbers

The EPA assigns specific registration and establishment numbers to track pesticide products from chemical synthesis to retail application.

┌─────────────────────────────────────────────────────────────┐
│                     EPA REGISTRATION NUMBER                 │
│                                                                             │
│       EPA Reg. No.   524   -   529   -   12345              │
│                      ───       ───       ─────              │
│                       │         │          │                │
│   Company Number ─────┘         │          │                │
│   (Primary Registrant)          │          │                │
│   Product Specific Number ──────┘          │                │
│   (Specific Formulation)                   │                │
│   Distributor / Sub-Registration Number ───┘                │
│   (Present only on distributor/private labels)              │
└─────────────────────────────────────────────────────────────┘

1. EPA Registration Number (EPA Reg. No.)

The EPA Registration Number proves that the pesticide formulation has undergone comprehensive federal review, risk-benefit analysis, and registration under FIFRA Section 3. It appears in one of two formats:

  • Two-Part Number (Company#-Product#, e.g., EPA Reg. No. 100-759): Indicates a primary federal registration. 100 identifies the registrant company (Syngenta Crop Protection), and 759 identifies the specific product formulation.
  • Three-Part Number (Company#-Product#-Distributor#, e.g., EPA Reg. No. 100-759-5481): Indicates a distributor product (also called a supplemental registration or private-label brand). The first two numbers represent the basic registrant and formulation, while the third number (5481) identifies the secondary distributor distributing the product under their own brand name.

2. EPA Establishment Number (EPA Est. No.)

The EPA Establishment Number identifies the physical manufacturing facility or packaging plant where the pesticide product was produced, formulated, blended, or packaged (e.g., EPA Est. No. 524-IA-01 or EPA Est. No. 1234-NC-002).

  • 524 = Company identifier
  • IA or NC = Two-letter state abbreviation of the manufacturing plant location
  • 01 or 002 = Facility sequence identifier for that specific plant

Exam Trap: Do not confuse the Registration Number with the Establishment Number! The EPA Reg. No. tells you who registered the product and what formulation it is (required for official recordkeeping). The EPA Est. No. tells you which factory physically produced the batch (used during product quality inquiries, adulteration checks, and emergency chemical recalls).


Classification Statements: General Use vs. Restricted Use Pesticides (RUP)

Every pesticide product registered by the EPA is classified under one of two legal tiers based on toxicity, environmental fate, and hazard potential:

╔════════════════════════════════════════════════════════════════════════════╗
║                         RESTRICTED USE PESTICIDE                           ║
║             DUE TO ACUTE TOXICITY AND GROUNDWATER HAZARDS                  ║
║  For retail sale to and use only by Certified Applicators or persons under  ║
║  their direct supervision and only for those uses covered by the Certified ║
║  Applicator's certification.                                               ║
╚════════════════════════════════════════════════════════════════════════════╝

1. General Use Pesticides (Unclassified)

Pesticides that, when applied in accordance with directions for use, will generally not cause unreasonable adverse effects on human health or the environment. They can be purchased and applied by the general public without special certification (though commercial applications for hire in North Carolina still require licensing).

2. Restricted Use Pesticides (RUP)

Pesticides classified as RUP pose potential human health hazards (acute toxicity, oncogenicity, mutagenicity) or environmental risks (groundwater contamination, drift hazard, avian or aquatic toxicity).

  • Mandatory Front-Panel RUP Banner: RUP products MUST carry a prominent boxed statement across the top of the front panel stating "RESTRICTED USE PESTICIDE" along with the specific underlying reason for restriction (e.g., groundwater vulnerability or avian toxicity).
  • Sale and Application Restriction: May be sold only by licensed pesticide dealers to certified applicators, and applied only by certified applicators or individuals under their direct supervision.
  • Mandatory Recordkeeping: Under 02 NCAC 09L .1402, licensed applicators and public operators using ground equipment must keep restricted use pesticide application records for three years; certified private applicators keep theirs two years under the federal USDA rule at 7 CFR Part 110.

Manufacturer Information & Emergency Contacts

The label must include the legal corporate name, business address, and contact information of the manufacturer, packager, or primary registrant. In addition, labels provide dedicated telephone numbers for:

  • Chemical emergencies, spills, or leaks (e.g., CHEMTREC: 1-800-424-9300)
  • Human poisoning emergencies (National Poison Help Hotline: 1-800-222-1222)
  • National Pesticide Information Center (NPIC: 1-800-858-7378)
Test Your Knowledge

An applicator inspects a pesticide container and observes the identification number 'EPA Reg. No. 100-759-5481'. What does the third segment ('5481') indicate?

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Test Your Knowledge

What is legally required regarding the Ingredient Statement on a commercial pesticide label?

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Test Your Knowledge

Why is it critical for a certified pesticide applicator to select products based on the active ingredient's common name rather than the brand name?

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Test Your Knowledge

Where must the Restricted Use Pesticide (RUP) classification statement appear on a pesticide label?

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