Hydrofluoric Acid - an overview | ScienceDirect Topics
Hydrofluoric acid (HFA) is the inorganic acid of elemental fluorine. HFA is used in fluorocarbons, fluoropolymers, aluminum production, stainless steel pickling, uranium processing, glass etching, oil well acidizing, gasoline production, removal of sand and scale from foundry castings, and as a laboratory reagent.
Hydrofluoric Acid - an overview | ScienceDirect Topics
Hydrofluoric acid (HFA) is the inorganic acid of elemental fluorine. HFA is used in fluorocarbons, fluoropolymers, aluminum production, stainless steel pickling, uranium processing, glass etching, oil well acidizing, gasoline production, removal of sand and scale from foundry castings, and as a laboratory reagent.
Hydrofluoric Acid - an overview | ScienceDirect Topics
Hydrofluoric acid has long been used for the decomposition of silicate rocks, usually in combination with nitric, perchloric or sulphuric acid and in platinum apparatus. This combination enables substantially all the fluorine as well as all the silica to be removed, leaving a residue that can be dissolved in dilute acid and used for the ...
Hydrofluoric Acid - an overview | ScienceDirect Topics
Hydrofluoric acid (HF) is a dangerous inorganic acid that is used widely in the chemical industries, electronics manufacturing, glass etching, smelting, cleaning, and other industrial fields [1–3]. It exists in two forms: in a purified form (>99%), called anhydrous hydrofluoric acid, and in a dilute form, called aqueous hydrofluoric acid [4].
Hydrofluoric Acid - an overview | ScienceDirect Topics
Hydrofluoric Acid. Hydrofluoric acid is a highly corrosive chemical primarily causing dermal injury to the hands. Hydrofluoric acid releases free hydrogen ions (H +) that penetrate and corrode the skin, potentially down to bone, producing bone demineralization and necrosis. The respiratory effects parallel those of the skin, except effects in ...
Hydrofluoric Acid - an overview | ScienceDirect Topics
Hydrofluoric Acid. Hydrofluoric acid is a corrosive that is commonly used in industrial applications and computer processing. It is used as a cleaning agent in the petroleum industry, in the production of high-octane fuel, glass etching, germicides, dyes, tanning, and fireproofing material, as well as in rust removal.
A review of treatment strategies for hydrofluoric acid burns: …
2014年12月1日 · Hydrofluoric acid (HF), a dangerous inorganic acid, can cause severe corrosive effects and systemic toxicity. HF enters the human body via where it contacts, such as skin and mucosa, alimentary and respiratory tracts, and ocular surfaces. In the recent years, the incidence of HF burn has tended to increase over time.
Precisely sensing hydrofluoric acid by photonic crystal hydrogels ...
2023年3月15日 · It is a great challenge to detect hydrofluoric acid (HF) with high precision, good selectivity, and visual readouts characteristics. Herein, a new photonic crystal (PC) hydrogel HF sensor based on the “selective etching-induced swelling” mechanism has been developed.
Effect of hydrofluoric acid concentration and etching time on the ...
2023年1月1日 · This study systematically reviewed the literature to compare the effect of alternative vs. manufacturer-recommended hydrofluoric (HF) acid etching time and concentrations on the adhesive and mechanical behavior of feldspathic (FEL), leucite-reinforced (LEU), lithium disilicate (LD), and lithium silicate (LS) glass-ceramics.
Chemical etching of glasses in hydrofluoric Acid: A brief review
2022年1月1日 · Due to their unusual viscosity-temperature relationship, glasses can be moulded into any required form with relative simplicity. Further, glasses are resistant to most gases and liquids. At room temperature, they can only be dissolved in hydrofluoric acid and other HF-containing aqueous solutions [1]. Hence, for a number of applications ...