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Phosgene was first deployed as a chemical weapon by the French in 1915 in World War I. [24] It was also used in a mixture with an equal volume of chlorine, with the chlorine helping to spread the denser phosgene. [25] [26] Phosgene was more potent than chlorine, though some symptoms took 24 hours or more to manifest.
Phosgene was used by the German army from the end of May 1915, when attacks were conducted on the Western Front against French troops and on the Eastern Front on Russians, where 12,000 cylinders with 240–264 long tons (244–268 t) of 95 per cent chlorine and 5 per cent phosgene was discharged on a 7.5 mi (12 km) front at Bolimów. [5]
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 ...
An artist's representation of how some people may see phosphenes by retinal stimulation. A phosphene is the phenomenon of seeing light without light entering the eye.The word phosphene comes from the Greek words phos (light) and phainein (to show).
A science project is an educational activity for students involving experiments or construction of models in one of the science disciplines. Students may present their science project at a science fair, so they may also call it a science fair project. Science projects may be classified into four main types.
In other projects Wikidata item; Appearance. move to sidebar hide. This is a list of common ... phosgene: 75-44-5 CO 2: carbon dioxide: 124-38-9 CO 3:
Traces of a toxic, colorless gas were found at the headquarters of Sweden’s security agency where a suspected gas leak last week forced authorities to evacuate some 500 people from the facility ...
In 1989, the United States Environmental Protection Agency (EPA) considered using data from Nazi research into the effects of phosgene gas, believing the data could help US soldiers stationed in the Persian Gulf at the time. They eventually decided against using it, on the grounds it would lead to criticism and similar data could be obtained ...