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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 ...
Biology is the overall natural science that studies life, with the other life sciences as its sub-disciplines. Some life sciences focus on a specific type of organism. For example, zoology is the study of animals, while botany is the study of plants. Other life sciences focus on aspects common to all or many life forms, such as anatomy and ...
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; Noxious stimulus, an actually or potentially tissue damaging event, may be mechanical, chemical or thermal
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 ...
One prime example of this is ribosome-inactivating proteins, tested in the treatment of leukemia. [ 2 ] The word toxicology ( / ˌ t ɒ k s ɪ ˈ k ɒ l ə dʒ i / ) is a neoclassical compound from Neo-Latin , first attested c. 1799 , [ 3 ] from the combining forms toxico- + -logy , which in turn come from the Ancient Greek words τοξικός ...
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]
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]