Hydrofluoric acid chemical properties
By ingestion:By inhalation of the acid:If the poison came into contact with your skin or eyes, you may have:Hydrofluoric acid poisoning can have direct effects on the heart. It can lead to irregular and sometimes life-threatening heartbeats.People who come into contact with this poison are likely to have a combination of the symptoms described.Home Care
Seek immediate medical attention. DO NOT make the person vomit unless told to do so by the poison control center or a health care professional.If the chemical gets on the skin or in the eyes, flush with plenty of water for at least 15 minutes.Take the person to the hospital immediately.Before calling emergency services
The health care provider will measure and monitor the person’s vital signs, including temperature, pulse, breathing rate, and blood pressure. Swallowing this acid may cause a serious drop in blood pressure. If the person inhaled the acid fumes, the provider may hear signs of fluid in the lungs by listening to the chest with a stethoscope.Specific treatment depends on how the poisoning occurred. Symptoms will be treated as appropriate.If the person swallowed the poison, treatment may include:If the person touched the poison, treatment may include:If the person breathed in the poison, treatment may include:Expectations (prognosis).
Dental hydrofluoric acid
Hydrofluoric acid HF is a lethal chemical by inhalation and skin contact. First aid, accidental spillage, decontamination of equipment: Discover our advice for managing this acid and limiting your employees’ exposure.
Hydrofluoric acid is a corrosive product with the formula HF, volatile, colorless and with a pungent odor. Anhydrous, it is gaseous at room temperature and can dissolve in water up to a concentration of 75%. In aqueous solution, hydrofluoric acid dissociates, i.e. it forms acidic H+ ions and F- ions called fluorides.
It is also found in low concentrations in everyday mechanical products, especially in the form of pickling pastes after welding, cleaning of automobile tires, passivation operations, etc.
One of the characteristics of hydrofluoric acid that makes it so dangerous is that it causes a delay in symptoms and, therefore, in treatment: when the HF solutions used are dilute, the action of the H+ ions is slower, and pain and symptoms may appear several minutes or hours after contact.
When a substance is released from a large area, for example from an industrial plant, or from a container such as a barrel or bottle, the substance enters the environment. This release does not always lead to exposure. You are exposed to a substance only when you come into contact with it. You can be exposed by inhaling, eating or drinking the substance, or by skin contact.
Regulations and recommendations may be expressed as ‘levels not to exceed’ in air, water, soil or food and are generally based on levels that affect animals. These levels are then adjusted for the protection of humans. Sometimes these ‘not-to-exceed levels’ differ among federal organizations due to different exposure durations (an 8-hour day or 24-hour day), the use of different animal studies, or other factors.
ATSDR can also direct you to the location of occupational and environmental health clinics. These clinics specialize in the identification, evaluation and treatment of diseases caused by exposure to hazardous substances.
Hydrofluoric acid uses
Hydrofluoric acid is a solution of hydrogen fluoride (HFl) in water. It is a hydrogen acid that should not be put in contact with glass elements as it can corrode them, which is why it is handled under extreme cold using plastic material.
Hydrofluoric acid is used in organic chemistry to obtain fluorinated organic compounds, as a catalyst in petrochemistry, to obtain artificial cryolite (Na3AlF6), which is used to obtain aluminum, inorganic fluorides such as uranium hexafluoride (UF6) and sometimes as a solvent. It is also used in the industry and preparation of glass or crystal in glass cutting and engraving. In petrographic studies of granitic rocks it is used in its pure state to attack with its vapors the silicates that compose the rock, and after a soft washing with distilled water it is covered with sodium cobalt-nitrite which will selectively paint of an intense yellow color the potassium feldspars, which then can be distinguished from the plagioclase feldspars on the basis of their color and in this way the igneous rock can be classified.