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Language: English
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Training Time: 31 minutes
Compatibility: Desktop, Tablet, Phone
Based on: 29 CFR 1910.120
Languages: English
A chemical's ability to cause adverse health effects in people or animals is indicated by its toxicity. The more toxic a substance is, the smaller the dose required to produce a damaging effect. This module will help you better understand toxicity and exposure limit information so you can prevent dangerous exposures.
At the end of this module, you will be able to:
The following key questions are answered in this module:
What are the main routes of exposure to hazardous chemicals? People can be exposed to chemicals through inhalation, absorption, ingestion, or injection.
What are acute and chronic effects? Acute effects show up at the time of exposure or shortly after. Chronic effects are caused by repeated exposures over a long period of time. It can take years for symptoms to appear.
How is dose determined? Dose is usually expressed as the amount of chemical per unit of body weight.
What is the dose-response relationship? All substances are toxic if the dose is high enough. The relationship between the dose and the magnitude of its effects for a given route of exposure can be represented using a dose-response curve.
How is toxicity quantified? Death is the typical response used to assess the relative toxicity of a substance. Toxicity can be expressed by LD50 or LC50 values, which represent the lethal dose (LD50) or concentration (LC50) required to kill 50 percent of a sample population.
Below is a transcript of the video sample provided for this module:
Use the additional resources and links below to learn more about this topic:
HAZWOPER Air Monitoring
View Course
HAZWOPER Decontamination
HAZWOPER Emergency Response Plan
HAZWOPER Hazmat Physical Properties
HAZWOPER Medical Surveillance
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