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The word phosphorous is the adjectival form of the P 3+ valence: so, just as sulfur forms sulfurous and sulfuric compounds, phosphorus forms phosphorous compounds (e.g., phosphorous acid) and P 5+ valence phosphoric compounds (e.g., phosphoric acids and phosphates).
Template:Phosphorus compounds This page was last edited on 8 January 2025, at 21:03 (UTC). Text is available under the Creative Commons Attribution ...
Pages in category "Inorganic phosphorus compounds" The following 17 pages are in this category, out of 17 total. This list may not reflect recent changes. A.
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 was kept at 444 °C. Brilliant opaque monoclinic, or rhombohedral, crystals sublimed as a result.
A general formula for such cyclic compounds is [HPO 3] x where x = number of phosphoric units in the molecule. When metaphosphoric acids lose their hydrogens as H +, cyclic anions called metaphosphates are formed. An example of a compound with such an anion is sodium hexametaphosphate (Na 6 P 6 O 18), used as a sequestrant and a food additive.
Phosphates are the naturally occurring form of the element phosphorus, found in many phosphate minerals. In mineralogy and geology, phosphate refers to a rock or ore containing phosphate ions. Inorganic phosphates are mined to obtain phosphorus for use in agriculture and industry. [2] The largest global producer and exporter of phosphates is ...
Some organophosphorus compounds are highly effective insecticides, although some are extremely toxic to humans, including sarin and VX nerve agents. [2] Phosphorus, like nitrogen, is in group 15 of the periodic table, and thus phosphorus compounds and nitrogen compounds have many similar properties.
(In contrast, arsenous acid's major tautomer is the trihydroxy form.) IUPAC recommends that the trihydroxy form P(OH) 3 be called phosphorous acid, and the dihydroxy form HP(O)(OH) 2 phosphonic acid. [3] Only the reduced phosphorus compounds are spelled with an "-ous" ending. P III (OH) 3 ⇌ HP V (O)(OH) 2 K = 10 10.3 (25°C, aqueous) [4]