• Phosphate
  • A charged molecule composed of one atom of phosphorus and four atoms of oxygen, PO4(-3), available to plants and phytoplankton as a nutrient.  
Abstract from DBPedia
    In chemistry, a phosphate is an anion, salt, functional group or ester derived from a phosphoric acid. It most commonly means orthophosphate, a derivative of orthophosphoric acid H3PO4. The phosphate or orthophosphate ion [PO4]3− is derived from phosphoric acid by the removal of three protons H+. Removal of one or two protons gives the dihydrogen phosphate ion [H2PO4]− and the hydrogen phosphate ion [HPO4]2− ion, respectively. These names are also used for salts of those anions, such as ammonium dihydrogen phosphate and trisodium phosphate. * H3PO4Phosphoricacid * [H2PO4]−Dihydrogenphosphate * [HPO4]2−Hydrogenphosphate * [PO4]3−Phosphate In organic chemistry, phosphate or orthophosphate is an organophosphate, an ester of orthophosphoric acid of the form PO4RR′R″ where one or more hydrogen atoms are replaced by organic groups. An example is trimethyl phosphate, (CH3)3PO4. The term also refers to the trivalent functional group OP(O-)3 in such esters. Orthophosphates are especially important among the various phosphates because of their key roles in biochemistry, biogeochemistry, and ecology, and their economic importance for agriculture and industry. The addition and removal of phosphate groups (phosphorylation and dephosphorylation) are key steps in cell metabolism. Orthophosphates can condense to form pyrophosphates.

    リン酸塩(リンさんえん、英: phosphate)は、1個のリンと4個の酸素から構成される多原子イオンまたは基から形成される物質である。リン酸イオンは−3価の電荷を持ち、PO43−と書き表される。食品添加物としても使用される。 有機化学においては、リン酸のアルキル誘導体は有機リン酸化合物と呼称される。 リン酸塩は通常、元素のリンを含み、種々のリン酸鉱物(リン鉱)として見出される。一方、単体のリンやホスフィンなど低酸化状態のリン化合物は自然界では見ることができない(稀に隕石中に、ホスフィン類が見出される)。


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