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Ammonium bifluoride is a component of some etchants. It attacks silica component of glass: SiO 2 + 4 [NH 4][HF 2] → SiF 4 + 4 [NH 4]F + 2 H 2 O. Potassium bifluoride is a related more commonly used etchant. Ammonium bifluoride has been considered as an intermediate in the production of hydrofluoric acid from hexafluorosilicic acid.
Ammonium tetrafluoroborate (or ammonium fluoroborate) is an inorganic salt composed of the ammonium cation and the tetrafluoroborate anion, with the chemical formula NH 4 BF 4. When heated to decomposition, ammonium tetrafluoroborate releases toxic fumes of hydrogen fluoride , nitrogen oxides , and ammonia .
Ammonium formate can also be used in palladium on carbon (Pd/C) reduction of functional groups. In the presence of Pd/C, ammonium formate decomposes to hydrogen , carbon dioxide , and ammonia . This hydrogen gas is adsorbed onto the surface of the palladium metal, where it can react with various functional groups.
Safety data sheet (SDS) ICSC 0414 ... −1.98 −2.93 Na + + e − ⇌ ... Ammonium salts of carboxylic acids can be dehydrated to amides by heating to 150–200 °C ...
Perfluorooctanoic acid (PFOA; conjugate base perfluorooctanoate; also known colloquially as C8, for its 8-carbon chain structure) is a perfluorinated carboxylic acid produced and used worldwide as an industrial surfactant in chemical processes and as a material feedstock.
Ammonium persulfate (APS) is the inorganic compound with the formula (NH 4) 2 S 2 O 8. It is a colourless (white) salt that is highly soluble in water, much more so than the related potassium salt .
Tetrabutylammonium hexafluorophosphate is a salt with the formula NBu 4 PF 6.It is a white powder that is used as an electrolyte in nonaqueous electrochemistry.It is highly soluble in polar organic solvents such as acetone and acetonitrile.
MXenes adopt three structures with one metal on the M site, as inherited from the parent MAX phases: M 2 C, M 3 C 2, and M 4 C 3.They are produced by selectively etching out the A element from a MAX phase or other layered precursor (e.g., Mo 2 Ga 2 C), which has the general formula M n+1 AX n, where M is an early transition metal, A is an element from group 13 or 14 of the periodic table, X is ...
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