(Fr. phosphoros, light bearing; ancient name for Venus) Discovered in urine by Brand in 1669. Phosphorus exists in several allotropic forms: white *, red and black. It is an essential componenet of living systems, found in nervous tissue, bones and cell protoplasm.
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yellow solid, insoluble in water, ignites in air,highly toxic and caustic to human tissue,stored under water and handled with forceps
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matches,fire works, pesticides, smoke bombs, fertilizer, special glasses,steel production, water softener, cleaning agent