GAZA DISELIMUTI PHOSPORUS
White phosphorus, classified as a 'chemical weapon' by the US intelligence, is an incendiary material that causes horrific burns, severe injuries or death when it comes in contact with human skin.
Under the Geneva Treaty of 1980, the use of white phosphorous as a weapon is prohibited, however, there is no blanket ban on its use as a smokescreen or for illumination.
Human Rights Watch has warned Israel not to use white phosphorus in Gaza, saying its researchers have observed the use of the chemical weapon by the Israeli military in the Gaza Strip.
Phosphorus is very poisonous, 50 mg constituting an approximate fatal dose. Exposure to white phosphorus should not exceed 0.1 mg/m3 (8-hour time-weighted average per 40-hour work week). White phosphorus should be kept under water (as it is dangerously reactive in air) and should be handled with forceps, as contact with the skin may cause severe burns.
When exposed to sunlight or when heated in its own vapor to 250oC, it is converted to the red variety, which does not phosphoresce in air as does the white variety. This form does not ignite spontaneously and is not as dangerous as white phosphorus. It should, however, be handled with care as it does convert to the white form at some temperatures and it emits highly toxic fumes of the oxides of phosphorus when heated. The red modification is fairly stable, sublimes with a vapor pressure of 1 atm at 17C, and is used in the manufacture of safety matches, pyrotechnics, pesticides, incendiary shells, smoke bombs, tracer bullets, etc.
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