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P2 Inorgchem
P2W2
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Light-carrier, St. Elmo's fire
Phosphorus
essential constituent of protoplasm, nervous tissue, teeth and bones (as phosphate)
Phosphorus
Allotropes of Phosphorus
-White Phosphorus
-Red Phosphorus
-Violet Phosphorus
-Black Phosphorus
yellow phosphorus, tetraphosphorus
white
phosphorus
chemically reactive and poisonous form of Phosphorus
white
phosphorus
colorless or white solid with waxy appearance and has distinct disagreeable ozone-like odor
white phosphorus
causes slow healing burns
white phosphorus
Antidote of white phosphorus
Cupric Sulphate
Chronic P toxicity: phossy jaw (bony necrosis of the mandible)
white phosphorus
Acute P Toxicity: Garlic odor of breath, luminous vomitus
white phosphorus
Former use: rat poison
white phosphorus
Appears as brown to red amorphous powder; stable in air
Red phosphorus
Non-poisonous and non-flammable in air except at high temperature (less chemically active compared to white P)
Red phosphorus
Relatively nontoxic unless it contains white P as impurity
impurity
Red Phosphorus
Prepared by heating white P at 300 degree C in the absence of air or by exposing white P to air
Red Phosphorus
uses: safety matches and pyrotechnics
Red Phosphorus
Hittorf's Metallic Phosphorus, monoclinic phosphorus
Violet Phosphorus
Prepared from red phosphorus heated in a sealed tube at ___ degree C
530
Violet Phosphorus
Thermodynamically stable form of Phosphorus at RT and pressure
Black
Phosphorus
Resembles graphite in texture
Black Phosphorus
Produced from white P under high pressure
Black Phosphorus
Stable in air
Black
Phosphorus
Does not catch fire spontaneously
Black Phosphorus
Insoluble in organic solvent
Black
Phosphorus
Phosphorus compounds and preparation
-Phosphates