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Water-reactive substances [1] are those that spontaneously undergo a chemical reaction with water, often noted as generating flammable gas. [2] Some are highly reducing in nature. [ 3 ] Notable examples include alkali metals , lithium through caesium , and alkaline earth metals , magnesium through barium .
Most of the victims died from inhaling poisonous gases, including carbon monoxide. After the fire, the technical institution INTI found that the level of toxicity due to the materials and volume of the building was 225 ppm of cyanide in the air. A lethal dose for rats is between 150 ppm and 220 ppm, meaning the air in the building was highly toxic.
100 ppm IDLH (NIOSH): immediately dangerous to life and health (the level that interferes with the ability to escape) 0.00047 ppm or 0.47 ppb is the odor threshold, the point at which 50% of a human panel can detect the presence of an odor without being able to identify it. [67] 10–20 ppm is the borderline concentration for eye irritation.
1.5 Oceans and bodies of water. 1.5.1 Snow. 1.5.2 Ice. 1.5.3 Rain. ... Severe weather phenomena are weather conditions that are hazardous to human life and property ...
As hot water is more likely than cold water to contain higher amounts of lead, only cold water from the tap should be used for drinking, cooking, and making baby formula. Since most of the lead in household water usually comes from plumbing in the house and not from the local water supply, using cold water can avoid lead exposure. [223]
Though some flash powders are too volatile and dangerous to be safely used, there are milder compounds that are still incorporated into performances today. Silver Fulminate is used to make noise-makers, small contact poppers, and several other novelty fireworks. [12] It is most widely used in bang snaps. In these small explosives, a minuscule ...
Biocides need not be poisonous to humans, because they can target metabolic pathways absent in humans, leaving only incidental toxicity. For instance, the herbicide 2,4-dichlorophenoxyacetic acid is a mimic of a plant growth hormone, which causes uncontrollable growth leading to the death of the plant. Humans and animals, lacking this hormone ...
A 37-year-old acid attack victim from Tabriz, Iran. An acid attack, [1] also called acid throwing, vitriol attack, or vitriolage, is a form of violent assault [2] [3] [4] involving the act of throwing acid or a similarly corrosive substance onto the body of another "with the intention to disfigure, maim, torture, or kill". [5]