Examples of 'ammonium fluoride' in a sentence
Meaning of "ammonium fluoride"
ammonium fluoride: A chemical compound with the formula NH4F, often used in various industrial applications such as etching glass and making other fluoride compounds
How to use "ammonium fluoride" in a sentence
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ammonium fluoride
The preferred catalyst is tetrabutyl ammonium fluoride.
Ammonium fluoride is a white crystalline solid.
The only difference consisted of not adding ammonium fluoride.
Ammonium fluoride or acid ammonium fluoride are the preferred salts.
A preferred fluoride containing compound is tetra alkyl ammonium fluoride.
Contains ammonium fluoride.
Ammonium fluoride is produced and hydrated silica is precipitated by this ammoniation.
A process for the production of titanium dioxide using aqueous ammonium fluoride.
The ammonium fluoride solution was discarded because of the high impurity content.
The oil was dissolved in hexane and was washed with aqueous ammonium fluoride solution.
The solution then is reacted with ammonium fluoride or ammonia to produce pure ammonium fluosilicate.
Ammoniating said ammonium fluosilicate solution to produce high purity silica and ammonium fluoride.
Ammonium bifluoride or ammonium fluoride are not ordinarily employed where ammonia fumes are a potential irritant.
The silyl group can be removed with a fluoride source such as tetrabutyl ammonium fluoride.
Suitable catalysts include tetrabutyl ammonium fluoride and strong acids such as hydrochloric acid.
See also
Process for the recovery of ammonia and fluoride values from ammonium fluoride solutions.
Ammonium fluoride is also present in the SEAL.
The present invention relates to a method for producing high purity silica and ammonium fluoride.
Silica precipitate N and ammonium fluoride solution M produced by this reaction will both have a high purity.
The slurry then was pumped into a centrifugal filter to separate silica and ammonium fluoride solution.
Alternatively, ammonium fluoride is also useful as an ammonium source for diammonium phosphate.
Mehlich III extracts phosphorus with acetic acid and ammonium fluoride.
The article of claim 22 wherein the metal ammonium fluoride comprises magnesium ammonium fluoride.
In an embodiment, tetraalkylammonium chloride is used with ammonium fluoride.
High-purity ammonium fluoride is useful as a precursor for making an oxide etchant for electronic applications.
This reaction is performed by using tetrabutyl ammonium fluoride in THF under reflux.
Ammonium fluoride is the inorganic compound with the formula NH4F.
More preferably, the source of fluoride is ammonium fluoride.
What is the role of the ammonium fluoride added to the mixture in step 6?
A fluorine-containing compound that may typically be used is ammonium fluoride.
To prepare a 40 percent ammonium fluoride solution requires use of a 32 wt percent ammonium fluosilicate solution.
For example, silyl group can be removed by ammonium fluoride treatment.
The ammonium fluoride added corresponds to 1.05 millimole F per gram silica gel.
At the uranium dioxide production process, ammonium fluoride is obtained as a byproduct.
According to a specific variant of the invention, the fluorinating agent is ammonium fluoride.
The extrusions were impregnated with a 5.6 % by weight ammonium fluoride solution following the procedure of Example 2.
The silyl protecting group is then removed, for example, using tetrabutyl ammonium fluoride.
It is a mixture of a buffering agent, such as ammonium fluoride ( NH4F ), and hydrofluoric acid HF.
Suitable fluoride anticavity / antidecay agents include sodium fluoride, potassium fluoride and ammonium fluoride.
Among these fluorine compounds, preferred are ammonium fluoride and aluminum fluoride.
Preferred fluoride ion sources for use herein include sodium fluoride, potassium fluoride and ammonium fluoride.
A method for producing high purity silica and ammonium fluoride comprising,.
Preferred fluoride ion sourcesà for use herein include sodium fluoride, potassium fluoride and ammonium fluoride.
In a variant it also contains ammonium fluoride ( NH 4 F ).
A preferred quarternary ammonium salt is tetra-n-butyl ammonium fluoride.
The product from Step 2 is treated with a solution of ammonium fluoride in methanol.
In other implementations, the salt can be a fluoride salt, e.g. tetrabutyl ammonium fluoride.
The reaction product was discharged into 230 parts of ammonium fluoride and 765 parts methanol.
Ammonium salts are, for example, ammonium halides, like ammonium chloride or especially ammonium fluoride.
The chemical bath 22 comprises an aqueous ammonium fluoride solution.
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