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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]
The lists and codes include several thousand substances. Many substances are covered under more than one category. [9] [10] Oils, as defined in regulation 1 of annex I to MARPOL 73/78 (carried in bulk) Noxious liquid substances, as defined in regulation 1.10 of Annex II MARPOL 73/78.
Many gases have toxic properties, which are often assessed using the LC 50 (median lethal concentration) measure. In the United States, many of these gases have been assigned an NFPA 704 health rating of 4 (may be fatal) or 3 (may cause serious or permanent injury), and/or exposure limits (TLV, TWA/PEL, STEL, or REL) determined by the ACGIH professional association.
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]
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
In biology, a poison is a chemical substance causing death, injury or harm to organisms or their parts. In medicine , poisons are a kind of toxin that are delivered passively, not actively. In industry the term may be negative, something to be removed to make a thing safe, or positive, an agent to limit unwanted pests .
The following is a list of types of poison by intended use: Biocide – a chemical substance capable of killing living organisms, usually in a selective way Fungicide – a chemical compound or biological organism used to kill or inhibit fungi or fungal spores; Microbicide – any compound or substance whose purpose is to reduce the infectivity ...
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