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  2. Ammonium fluoride - Wikipedia

    en.wikipedia.org/wiki/Ammonium_fluoride

    This substance is commonly called "commercial ammonium fluoride". The word "neutral" is sometimes added to "ammonium fluoride" to represent the neutral salt [NH 4]F as opposed to the "acid salt" (NH 4 HF 2). The acid salt is usually used in preference to the neutral salt in the etching of glass and related silicates. This property is shared ...

  3. List of CAS numbers by chemical compound - Wikipedia

    en.wikipedia.org/wiki/List_of_CAS_numbers_by...

    Chemical formula Synonyms CAS number C 10 H 16 N 2 O 8: Ethylenediaminetetraacetic acid (EDTA): 6381–92–6 C 12 H 22 O 11: sucrose: 57–50–1 C 18 H 29 O 3 S: sodium dodecyl benzenesulfonate: 2155–30–0

  4. Tetra-n-butylammonium fluoride - Wikipedia

    en.wikipedia.org/wiki/Tetra-n-butylammonium_fluoride

    Tetra-n-butylammonium fluoride, commonly abbreviated to TBAF and n-Bu 4 NF, is a quaternary ammonium salt with the chemical formula (CH 3 CH 2 CH 2 CH 2) 4 N + F −. It is commercially available as the white solid trihydrate and as a solution in tetrahydrofuran. TBAF is used as a source of fluoride ion in organic solvents. [1]

  5. Ammonium bifluoride - Wikipedia

    en.wikipedia.org/wiki/Ammonium_bifluoride

    Ammonium bifluoride, as its name indicates, contains an ammonium cation ([NH 4] +), and a bifluoride (or hydrogen difluoride) anion ([HF 2] −).The triatomic bifluoride anion features a strong three-center four-electron bond (specifically, a symmetrical hydrogen bond) with a bond energy greater than 155 kJ/mol, [2] and an H-F length of 114 pm. [3]

  6. Tetrabutylammonium - Wikipedia

    en.wikipedia.org/wiki/Tetrabutylammonium

    tetrabutylammonium fluoride, a desilylation reagent. tetrabutylammonium bromide, a precursor to other tetrabutylammonium salts via salt metathesis reactions. tetrabutylammonium iodide, a low cost catalyst. [1] tetrabutylammonium triiodide, a common carrier of the triiodide anion used in chemical synthesis.

  7. Ammonium fluorosilicate - Wikipedia

    en.wikipedia.org/wiki/Ammonium_fluorosilicate

    Ammonium fluorosilicate (also known as ammonium hexafluorosilicate, ammonium fluosilicate or ammonium silicofluoride) has the formula (NH 4) 2 SiF 6. It is a toxic chemical, like all salts of fluorosilicic acid. [4] It is made of white crystals, [5] which have at least three polymorphs [6] and appears in nature as rare minerals cryptohalite or ...

  8. Buffered oxide etch - Wikipedia

    en.wikipedia.org/wiki/Buffered_oxide_etch

    Buffered oxide etch (BOE), also known as buffered HF or BHF, is a wet etchant used in microfabrication. It is a mixture of a buffering agent, such as ammonium fluoride NH 4 F, and hydrofluoric acid (HF). Its primary use is in etching thin films of silicon nitride (Si 3 N 4) or silicon dioxide (SiO 2), by the reaction: SiO 2 + 4HF + 2NH 4 F → ...

  9. Tetramethylammonium fluoride - Wikipedia

    en.wikipedia.org/wiki/Tetramethylammonium_fluoride

    Most other soluble salts of fluoride are in fact bifluorides, HF 2 –. Historically, there have been two main approaches to prepare tetramethyl­ammonium fluoride: hydrofluoric acid neutralization of tetramethyl­ammonium hydroxide, and salt metathesis between different ammonium salts and inorganic fluoride sources, such as KF or CsF. [1]

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