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Toxic: a chemical that has a median lethal concentration (LC 50) in air of more than 200 parts per million (ppm) but not more than 2,000 parts per million by volume of gas or vapor, or more than 2 milligrams per liter but not more than 20 milligrams per liter of mist, fume or dust, when administered by continuous inhalation for 1 hour (or less if death occurs within 1 hour) to albino rats ...
Noxious describes any happening that is perceived as harmful. It may also refer to: Poison, substances that can harm or kill; Noxious weed, a plant designated by the government as injurious to public health, agriculture, recreation, wildlife or property
This is the list of extremely hazardous substances defined in Section 302 of the U.S. Emergency Planning and Community Right-to-Know Act (42 U.S.C. § 11002). The list can be found as an appendix to 40 CFR 355. [1] Updates as of 2006 can be seen on the Federal Register, 71 FR 47121 (August 16, 2006). [2]
This includes any amount paid by the ship owner and his insurer. Companies that import hazardous and noxious substances in member states of the convention will be required to contribute to this fund. Contributions will be based on the amount of substances companies receive each year. [16] Types of damages covered: [10] Loss of life or personal ...
An asphyxiant gas, also known as a simple asphyxiant, is a nontoxic or minimally toxic gas which reduces or displaces the normal oxygen concentration in breathing air. ...
A biological hazard, or biohazard, is a biological substance that poses a threat (or is a hazard) to the health of living organisms, primarily humans. This could include a sample of a microorganism, virus or toxin that can adversely affect human health. A biohazard could also be a substance harmful to other living beings. [a]
Following a disaster or conflict, an environmental emergency can occur when people's health and livelihoods are at risk due to the release of hazardous and noxious substances, or because of significant damage to the ecosystem. Examples include fires, oil spills, chemical accidents, toxic waste dumping and groundwater pollution.
The term "environmental toxin" can sometimes explicitly include synthetic contaminants [26] such as industrial pollutants and other artificially made toxic substances. As this contradicts most formal definitions of the term "toxin", it is important to confirm what the researcher means when encountering the term outside of microbiological contexts.