How strong is the corrosiveness of hydrofluoric acid?
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Hydrofluoric acid is extremely corrosive; although it is classified as a weak acid chemically, its destructive power far exceeds that of strong acids such as sulfuric acid, and it is known as \"bone-dissolving acid.\" Its ability to corrode materials: It is one of the few acids that can corrode silicon-containing materials such as glass, quartz, and ceramics; it can also rapidly destroy the oxide protective layers of metals like stainless steel and aluminum, as well as concrete. Conventional acid-resistant materials are almost ineffective against it. It poses a fatal threat to the human body. Fluoride ions have extremely high permeability; 5% hydrofluoric acid can penetrate the skin and reach the bones in just 3 minutes. There may be no pain at first, but it later leads to liquefactive necrosis of deep tissues and bone dissolution ； A burn area as small as the size of a palm can lead to hypocalcemia, which may cause cardiac arrest and death. Inhaling acid mist can result in pulmonary edema, while contact with the eyes can cause corneal perforation and blindness.
Thanks for the education; I’ve learned something new! I used to know only that hydrofluoric acid could corrode glass; I never imagined its destructive power on the human body to be so severe. For such highly hazardous chemicals, here are a few additional safety recommendations: It is essential to wear fluororubber gloves and goggles when handling them (regular rubber gloves are ineffective); it is advisable for laboratories to keep calcium gluconate gel on hand as an emergency antidote ； Even if there is no pain upon contact, immediately rinse the area thoroughly with plenty of water and seek medical attention. Do not delay treatment just because you feel nothing. Also, a reminder: under no circumstances should you try this on your own. Any experiment involving hydrofluoric acid must be conducted in a professional fume hood and under the supervision of qualified personnel.