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3 often prepared as the tributylammonium ((C 4 H 9) 3 NH +) or tetrabutylammonium ((C 4 H 9) 4 N + salt. The anion features phosphorus(V) bonded to three tetrachlorocatecholate (C 6 Cl 4 O 2− 2) ligands. This anion can be resolved into the axially chiral enantiomers, which are optically stable (the picture shows the Δ enantiomer).
Pyrophosphorolysis is the reverse of the polymerization reaction in which pyrophosphate reacts with the 3′-nucleosidemonophosphate (NMP or dNMP), which is removed from the oligonucleotide to release the corresponding triphosphate (dNTP from DNA, or NTP from RNA). The pyrophosphate anion has the structure P 2 O 4− 7, and is an acid anhydride ...
Potato starch slurry Roux. A thickening agent or thickener is a substance which can increase the viscosity of a liquid without substantially changing its other properties. Edible thickeners are commonly used to thicken sauces, soups, and puddings without altering their taste; thickeners are also used in paints, inks, explosives, and cosmetics.
For example, treatment of Bu 4 NOH with disodium pyrophosphate, Na 2 H 2 P 2 O 7, gives (Bu 4 N) 3 [HP 2 O 7], which is soluble in organic solvents. [2] Similarly, neutralization of Bu 4 NOH with hydrofluoric acid affords a relatively water-free Bu 4 NF. This salt dissolves in organic solvents and is useful in desilylation. [3]
The last one is pyrophosphate [P 2 O 7] 4−. The pyrophosphates are mostly water-soluble. The pyrophosphates are mostly water-soluble. Likewise, tripolyphosphoric acid H 5 P 3 O 10 yields at least five anions [H 5− k P 3 O 10 ] k − , where k ranges from 1 to 5, including tripolyphosphate [P 3 O 10 ] 5− .
Some tetrabutylammonium salts of simple anions include: tetrabutylammonium fluoride, a desilylation reagent.; tetrabutylammonium bromide, a precursor to other tetrabutylammonium salts via salt metathesis reactions.
At physiological pH's, pyrophosphate exists as a mixture of doubly and singly protonated forms. When molten, pyrophosphoric acid rapidly converts to an equilibrium mixture of phosphoric acid, pyrophosphoric acid and polyphosphoric acids. The percentage by weight of pyrophosphoric acid is around 40% and it is difficult to recrystallise from the ...
It is used to prepare many other tetrabutylammonium salts by salt metathesis reactions. The anhydrous form is a white solid. [2] In addition to being cheap, tetrabutylammonium bromide is also environmentally friendly, has a greater degree of selectivity, is operationally simple, non-corrosive, and can be recycled easily as well. [5]