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Phosphorus sulfides comprise a family of inorganic compounds containing only phosphorus and sulfur.These compounds have the formula P 4 S n with n ≤ 10. Two are of commercial significance, phosphorus pentasulfide (P 4 S 10), which is made on a kiloton scale for the production of other organosulfur compounds, and phosphorus sesquisulfide (P 4 S 3), used in the production of "strike anywhere ...
Phosphorus forms a wide range of sulfides, where the phosphorus can be in P(V), P(III) or other oxidation states. The three-fold symmetric P 4 S 3 is used in strike-anywhere matches. P 4 S 10 and P 4 O 10 have analogous structures. [49] Mixed oxyhalides and oxyhydrides of phosphorus(III) are almost unknown.
Fibrous red phosphorus is another crystalline form of red phosphorus. [7] It is obtained along with violet phosphorus when red phosphorus is sublimed in vacuum in the presence of iodine. [21] It is structurally similar to violet phosphorus. However, in fibrous red phosphorus, phosphorus chains lie parallel instead of orthogonal, unlike violet ...
Phosphorus sesquisulfide is the inorganic compound with the formula P 4 S 3. It was developed by Henri Sevene and Emile David Cahen in 1898 as part of their invention of friction matches that did not pose the health hazards of white phosphorus. [2] [3] This yellow solid is one of two commercially produced phosphorus sulfides. It is a component ...
Phosphorus pentasulfide is the inorganic compound with the formula P 2 S 5 or P 4 S 10 . This yellow solid is the one of two phosphorus sulfides of commercial value. Samples often appear greenish-gray due to impurities. It is soluble in carbon disulfide but reacts with many other solvents such as alcohols, DMSO, and DMF.
With the addition of a grit such as boron carbide (in a modified formulation given as 70% KClO 3, 19% red phosphorus, 3% sulfur, 3% chalk, and 5% boron carbide by weight), Armstrong's mixture has been considered for use in firearm primers. [5] This use as primer for artillery propellants may have been Armstrong's original purpose. [6]
Violet phosphorus (right) by a sample of red phosphorus (left) Hitorff's phosphorus structure. Monoclinic phosphorus, violet phosphorus, or Hittorf's metallic phosphorus is a crystalline form of the amorphous red phosphorus. [15] [16] In 1865, Johann Wilhelm Hittorf heated red phosphorus in a sealed tube at 530 °C. The upper part of the tube ...
Red: Yttrium oxide-sulfide activated with europium is used as the red phosphor in color CRTs. The development of color TV took a long time due to the search for a red phosphor. The first red emitting rare-earth phosphor, YVO 4:Eu 3+, was introduced by Levine and Palilla as a primary color in television in 1964. [29]