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The international pictogram for poisonous substances. The skull and crossbones has long been a standard symbol for poison. A poison is any chemical substance that is harmful or lethal to living organisms. The term is used in a wide range of scientific fields and industries, where it is often specifically defined.
Poisoning is the harmful effect which occurs when toxic substances are introduced into the body. [1] The term "poisoning" is a derivative of poison, a term describing any chemical substance that may harm or kill a living organism upon ingestion. [2] Poisoning can be brought on by swallowing, inhaling, injecting or absorbing toxins through the skin.
Notwithstanding the provisions of this paragraph, the packing group and hazard zone of a tear gas substance is as assigned in Column 5 of the 49CFR 172.101 Table. The packing group and hazard zone for Division 6.1 mixtures that are poisonous (toxic) by inhalation may be determined by one of the following methods:
A substance which is a skin sensitizer causes an allergic response from a dermal application. Carcinogens induce cancer, or increase the likelihood of cancer occurring. Neurotoxicity is a form of toxicity in which a biological, chemical, or physical agent produces an adverse effect on the structure or function of the central and/or peripheral ...
Poison is a related but broader term that encompasses both toxins and toxicants; poisons may enter the body through any means - typically inhalation, ingestion, or skin absorption. Toxin, toxicant, and poison are often used interchangeably despite these subtle differences in definition.
"The dose makes the poison" (Latin: dosis sola facit venenum 'only the dose makes the poison') is an adage intended to indicate a basic principle of toxicology. It is credited to Paracelsus who expressed the classic toxicology maxim "All things are poison, and nothing is without poison; the dosage alone makes it so a thing is not a poison."
Most of us know to be cautious of sharks and lightning, but, in reality, there are some rather big dangers out there that often go unacknowledged.
A toxicant is any toxic substance, whether artificial or naturally occurring. [1] By contrast, a toxin is a poison produced naturally by an organism (e.g. plant, animal, insect, bacterium). [2] The different types of toxicants [3] can be found in the air, soil, water, or food. [4]