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Highly Toxic: a gas that has a LC 50 in air of 200 ppm or less. [2] NFPA 704: Materials that, under emergency conditions, can cause serious or permanent injury are given a Health Hazard rating of 3. Their acute inhalation toxicity corresponds to those vapors or gases having LC 50 values greater than 1,000 ppm but less than or equal to 3,000 ppm ...
The most frequently used chemicals during World War I were tear-inducing irritants rather than fatal or disabling poison. During World War I, the French Army was the first to employ tear gas, using 26 mm grenades filled with ethyl bromoacetate in August 1914.
Unexploded shells containing mustard gases and other chemical agents are still present in several test ranges in proximity to schools in the Edgewood area, but the smaller amounts of poison gas (4 to 14 pounds (1.8 to 6.4 kg)) present considerably lower risks. These remnants are being detected and excavated systematically for disposal.
Hydrogen cyanide is a poisonous gas that interferes with cellular respiration. Cyanide poisoning prevents the cell from producing adenosine triphosphate (ATP) by binding to one of the proteins involved in the electron transport chain. [2] This protein, cytochrome c oxidase, contains several subunits and has ligands containing iron groups.
Division 6.1: Poisonous material is a material, other than a gas, which is known to be so toxic to humans as to afford a hazard to health during transportation, or which, in the absence of adequate data on human toxicity:
The waste, transported from the now-defunct Union Carbide factory in the city of Bhopal - site of the 1984 gas tragedy that killed thousands ... It's poison," said Gayatri Tiwari, a mother of five ...
A chemical weapon agent (CWA), or chemical warfare agent, is a chemical substance whose toxic properties are meant to kill, injure or incapacitate human beings.About 70 different chemicals have been used or stockpiled as chemical weapon agents during the 20th century, although the Organisation for the Prohibition of Chemical Weapons (OPCW) has an online database listing 35,942 chemicals which ...
The poisonous and invisible fumes, also known as CO, comes from the burning of gas, wood, charcoal and other fuels. When you turn on a car or a truck, it releases this fume.