Pesticide present in a formulation as described by the common name. The part of a pesticide formulation from which the biological effect is obtained. (FAO, 1995)

The chemical(s) in a pesticide product that control the target pest.

The chemical(s) in a formulated product that is (are) principally responsible for the herbicidal effects and that is (are) shown as active ingredient(s) on herbicide labels.

Active constituent That part of a pesticid al commercial product or spray mix which directly causes pesticidal effects, often expressed in percent, weight of toxicant per unit of measure e.g. g/litre (%) for liquids and g/kg (%) for solids. Occasionally mi/litre (%) is used for liquids.

The ingredient(s) of a pesticide that prevent, destroy, repel, or mitigate a pest. In the case of a plant growth regulator, an ingredient which, through physiological or biochemical action, accelerates or retards the growth rate of maturation or otherwise alters the behavior of plants. In the case of a desiccant, an ingredient which artificially accelerates the drying of plant tissue.

a material essential for the specific application for which the aerosol was formulated (e

The chemical, substance, or other component of articles intended for use in the diagnosis, cure, mitigation, treatment, or prevention of diseases in humans or other animals or for use as nutritional supplements.

An active ingredient is any component that provides pharmacological activity or other direct effect in the diagnosis, cure, mitigation, treatment, or prevention of disease, or to affect the structure or any function of the body of man or animals.

The ingredient that is responsible for producing the desired effect of a mixture of ingredients and for giving the product its main characteristic. The active ingredient is not necessarily the most common ingredient in a product.

The chemical in a pesticide formulation designed to kill a pest.

The substance which, contained in a product, actually does the main part of the work that the product is used for.

The ingredient in a product that is responsible for the productâ€(tm)s function.

The ingredient in a pesticide product that controls or repels a pest.

An ingredient in a formulated pesticide product which will prevent, destroy, repel or mitigate any pest.

The chemical or substance in a compound known or believed to have a therapeutic effect.

An ingredient in a pesticide that destroys or controls a pest.

The portion of a pesticide formulation that is responsible for the desired effect.

any substance, as determined by EPA, that will prevent, destroy, repel or mitigate any pest, or that functions as a plant regulator, desiccant, or defoliant within the meaning of FIFRA.

In any pesticide product, the component that kills, or otherwise controls, target pests. Pesticides are regulated primarily on the basis of active ingredients.()

The component which kills or otherwise controls, targets pests in any pesticide product. Pesticides are regulated primarily on the basis of active ingredients.

The chemical that has pesticide action. Active ingredients are listed in order on a pesticide label as percentage by weight or as pounds per gallon of concentrate. See Inert Ingredients.

A substance in a product with an action specific to the intended purpose of the product; the portion of a pesticide formulation which is the actual toxicant.

Any component that is intended to furnish pharmacological activity or other direct effect in the diagnosis, cure, mitigation, treatment, or prevention of disease, or to affect the structure or any function of the body of humans or other animals. The term includes those components that may undergo chemical change in the manufacture of the drug product and be present in the drug product in a modified form intended to furnish the specified activity or effect. [Adapted from §210.3(b)(7)

an agent that is specifically intended to kill, repel, or otherwise deter a target organism, and which is registered with the United States Environmental Protection Agency and the New York State Department of Environmental Conservation as such. Active ingredients are listed on pesticide product labels.

A product component responsible for an effect the product was designed to have.

the part of a pesticide product which gives it its pesticidal properties (the term ‘active substance’ is often used to mean the same thing).

The active ingredients list is the part of an ingredient label that must adhere to specific regulations mandated by the FDA. Active ingredients must be listed first on an ingredient label with the amount and exact function of each active ingredient is controlled and must be approved by the FDA. Active ingredients are considered to have a pharmacological altering effect on skin, and these effects must be documented by scientific evaluation and approved by the FDA. Active ingredients include such substances as avobenzone and oxinate which are sunscreen ingredients, hydroquinone which is a skin-lightening agent, and benzoyl peroxide and sulfur which are acne medicines.

The chemical in a pesticide formulation that kills or otherwise controls a pest or a weed. The remainder of a formulated pesticide is one or more inert ingredients.

Any part of a drug that effects the diagnosis, cure, treatment, or prevention of disease, or affects the structure or function of the body.

A chemical substance that provides medical relief for a specific symptom.

That part or proportion of the pesticide which is responsible for the effect on the target pest.

The name and strength of each medicinal ingredient contained in the product is listed. Information enclosed within brackets represents the inactive or salt portion and identifies how the ingredient is supplied - this information is only included for some ingredients. The number in the strength field refers to the active portion of the drug. For example: calcium (calcium carbonate) 200 mg - 200 mg is the strength of elemental calcium, not calcium carbonate.

That ingredient of a pesticide that actually controls the targeted pest. End-use product A control product that has been manufactured, packaged and labelled in a form that is usable by the consumer.

A substance contained in a pesticide prepara­tion which will, by itself, act in the same manner and for the same purposes as indicated by the directions for the preparation as a whole. Often listed as pounds per gallon of solution.

An active ingredient, also active pharmaceutical ingredient (or API), is the substance in a drug that is pharmaceutically active. Some medications may contain more than one active ingredient. The traditional word for the API is pharmacon (from Greek: (φάρμακον), adapted from pharmacos) which originally denoted a magical substance or drug.