Phosphorus pentoxide (see the wiki page)
It is a very good dessicant (dehydrating agent) used to remove moisture from air (used in preserving things) or used chemically to remove water from other chemicals.
It is in the form of a white crystalline powder.
It is stable in air - it is usually made by burning phosphorus in air (which white phosphorus does spontaneously).
It react violently with water or alchohols and is a very toxic substance. See the material safety data sheet.
2006-10-15 17:09:15
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answer #1
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answered by Orinoco 7
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P2= 2Molecules of Phosphorus
O5=5 Molecules of Oxygen
Generally is it a Oxidant and acts even as catalyst for some reactions
2006-10-15 17:12:23
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answer #2
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answered by ashishmulye 3
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Phosphorus pentoxide is the chemical compound with the formula P2O5. This white crystalline solid is the acid anhydride of phosphoric acid. It is a powerful desiccant. It is also called as White Phosphorus
Potential Health Effects
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Phosphorus pentoxide reacts with moisture on body tissue surfaces to form phosphoric acid, which approximates sulfuric acid and hydrochloric acids in corrosive intensity.
Inhalation:
Inhalation produces damaging effects on the mucous membranes and upper respiratory tract. Symptoms may include irritation of the nose and throat, and labored breathing. May cause lung edema, a medical emergency.
Ingestion:
Corrosive. Releases heat on contact with moisture and will burn mucous surfaces. Sore throat, abdominal pain, nausea, vomiting, and diarrhea may result. Brown or yellow stains will ne found around the mouth. Suffocation may occur from swelling of the tongue. Aspiratiuon into the lungs can cause chemical pneumonitis. Ingestion of this material has caused human fatalities.
Skin Contact:
Corrosive. Contact can cause severe irritation, burns, redness, and pain. Burns usually penetrate the skin with sharply defined edges, and heal slowly with the formation of scar tissue.
Eye Contact:
Corrosive. Fumes and airborne powder cause eye irritation. Contact with substance can cause severe eye burns and permanent damage.
Chronic Exposure:
Chronic ingestion or inhalation may induce systemic phosphorous poisoning. Liver damage, kidney damage, jaw/tooth abnormalities, blood disorders and cardiovascular effects can result.
Aggravation of Pre-existing Conditions:
Persons with pre-existing skin disorders or eye problems, jaw/tooth abnormalities, or impaired liver, kidney or respiratory function may be more susceptible to the effects of the substance.
White phosphorus is a common allotrope of the chemical element phosphorus which has found extensive military application as an incendiary agent [1], smoke-screening agent, and as an antipersonnel flame compound capable of causing serious burns[2].
2006-10-15 17:21:57
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answer #4
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answered by vijaya l 4
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