Phosphorus reaction with water

White Phosphorus Oxidation. Emission of green light from the oxidation of elemental white phosphoms in moist air is one of the oldest recorded examples of chemiluminescence. Although the chemiluminescence is normally observed from sotid phosphoms, the reaction actually occurs primarily just above the surface with gas-phase phosphoms vapor. The reaction mechanism is not known, but careful spectral analyses of the reaction with water and deuterium oxide vapors indicate that the primary emitting species in the visible spectmm are excited states of (PO)2 and HPO or DPO. Ultraviolet emission from excited PO is also detected (196). 

Few industrial uses have so far been found for phosphides. Ferrophosphorus is produced on a large scale as a byproduct of P4 manufacture, and its uses have been noted (p. 480). Phosphorus is also much used as an alloying element in iron and steel, and for improving the workability of Cu. Group 3 monophosphides are valuable semiconductors (p. 255) and Ca3P2 is an important ingredient in some navy sea-flares since its reaction with water releases spontaneously flammable... 

This reaction is an example of a hydrolysis reaction, a reaction with water in which new element-oxygen bonds are formed. Another example is the reaction ot PC15 (phosphorus oxidation state +5) with water to produce phosphoric acid, H3P04 (also phosphorus oxidation state - -5) ... 

Reactions with water, e.g. reaction of phosphorus oxychloride with water to produce gaseous hydrogen chloride ... 

White phosphorus has an autoignition temperature only shghtly above ambient, dispersed it will soon heat itself to that by the slow oxidation responsible for its glow. Red is not spontaneously combustible, however if it does catch fire white will be produced, so that the fire, once extinguished, may spontaneously re-ignite. Both can produce phosphine, among other products, by slow reaction with water. Sealed containers of damp phosphorus (white is often stored under water) may pressurise with highly toxic, pyrophoric, gas mixtures [1]. 

Phosphorus acid can be prepared by the reaction of phosphorus trichloride with water ... 

A number of compounds containing phosphorus-metal bonds exhibit an interesting reactivity. In platinum (II) complexes, coordinated PC13 undergoes solvolysis reactions with water and alcohols to form stable orthophosphite esters or phosphorous acid (Equation 32) (66, 67). 

Pour the reaction mixture into the flask of an apparatus for fractional distillation under atmospheric pressure (see Fig. 20). Collect the fraction boiling at 125 °C. Pour the phosphorus thiochloride into a weighed drawn out test tube. Seal the ampoule wear eye protection ). Weigh the ampoule and the remaining parts of the test tube. Write the equation of the reaction. Calculate the yield in per cent. Test the reaction of phosphorus thiochloride with water. Write the equation of the reaction. What is the oxidation state of sulphur in this compound ... 

All these halides are gases, volatile liquids, or low-melting solids. For example, phosphorus trichloride is a colorless liquid that boils at 76°C, and phosphorus pentachloride is an off-white solid that melts at 167°C. Both fume on contact with moist air because of a reaction with water that breaks the P-Cl bonds, converting PCI3 to phosphorous acid (H3P03), and PCI5 to phosphoric acid (H3P04) ... 

Impressive evidence of such a reaction was provided in Ref. 121, where trivalent phosphoms compound Z3P undergoes single-electron transfer to the photoexcited rhodamine 6C (Rho+ ), generating the corresponding trivalent phosphorus radical cation Z3/J1. However, this cation undergoes the ionic reaction with water in the solvent, which is so fast that electron transfer becomes irreversible ... 

DOT CLASSIFICATION 8 Label Corrosive SAFETY PROFILE A very poisonous material that is also corrosive to the eyes, skin, and mucous membranes. Violent reaction with water. Vigorous reaction with phosphorus. When heated to decomposition it emits ver " toxic fumes of CL and SOx. See also CHLOROSULFONIC ACID. 

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