pyrophosphoric การใช้

• It is an ester of pyrophosphoric acid with the nucleoside uridine.
• The chemical structure of pyrophosphoric acid is also shown in the illustration.
• Pyrophosphoric acid is a medium strong salts, and esters of pyrophosphoric acid are called pyrophosphates.
• Pyrophosphoric acid is a medium strong salts, and esters of pyrophosphoric acid are called pyrophosphates.
• When one molecule of water has been removed for each two molecules of phosphoric acid, the result is pyrophosphoric acid ( H 4 P 2 O 7 ).
• When two orthophosphoric acid molecules are condensed into one molecule, "'pyrophosphoric acid "'( H 4 P 2 O 7 ) is obtained as follows:
• In comparison, phosphoric acid, H 3 PO 4 can be formulated as 3H 2 O稰 2 O 5 and pyrophosphoric acid, H 4 P 2 O 7, as 2H 2 O稰 2 O 5.
• On standing the anydrous acid undergoes rearrangement and disproportionation to form a mixture of isohypophosphoric acid, HPO ( OH )-O-PO 2 ( OH ); pyrophosphoric acid H 2 P 2 O 7 and pyrophosphorous acid.
• "' Triphosphoric acid "'( also "'tripolyphosphoric acid "'), with formula H 5 P 3 O 10, is a phosphoric acids, it is the next polyphosphoric acid after pyrophosphoric acid, H 4 P 2 O 7, also called diphosphoric acid.
• The initial phosphoric acid solution may contain 23 33 % P 2 O 5 ( 32 46 % H 3 PO 4 ), but can be concentrated by the evaporation of water to produce " commercial-" or " merchant-grade " phosphoric acid, which contains about 54 62 % pyrophosphoric and polyphosphoric acids will start to form, making the liquid highly viscous ).