National Core Pesticide Manual - Chapter Five Flashcards
Toxicity
ability of a pesticide to cause short term or long term injury
Acute
short term injury; caused by a single, one time exposure event
Chronic
long term injury
Exposure
when pesticides get onto or into the body through he skin, lungs, mouth or by eye contact
Hazard Formula
Toxicity x Exposure
Local Effects
those that occur to the area of contact with skin, eyes or respiratory tract; contact symptoms
Systemic Effects
occur once the substance is absorbed and distributed throughout the body; can be acute or chronic
Allergy Effects
hypersensitivity to a specific substance (allergen)
Four Primary Routes of Exposure
Skin (dermal), eyes (ocular), lungs (inhalation), mouth (oral)
Main Route of Pesticide Entry
the skin, esp warm, moist areas
LD
lethal dose, dose of a toxicant required to kill 50% of the population of test animals under a standard set of conditions (LOWER LD = GREATER TOXICITY)
GHS Hazard Class I
highly toxic w/ acute oral LD50 DANGER / POISON / SKULL AND CROSSBONES; some may just say Danger
GHS Hazard Class II
moderately toxic, WARNING / AVISO, LD50 from 50 - 500 mg / kg
GHS Hazard Class III
CAUTION, slightly toxic LD50 from 500-5,000 mg / kg
Delayed Effects
illnesses or injuries that do not appear immediately (within 24 hours) after exposure to a pesticide - could be weeks, months or even years