Acute exposure can irritate and burn the skin, eyes, and throat, and can cause dizziness, headache, and nausea. High levels can lead rapidly to convulsions or sudden death. Chronic exposure damages the thyroid gland and nervous system. Hydrofluoric acid is a corrosive colorless fuming liquid or gas with a strong irritating odor. It is used in etching glass and in making other chemicals, including gasoline.
Contact can severely burn the skin and eyes, resulting in permanent eye damage or blindness.
Long term exposure may damage the liver and kidneys, and causes fluorosis, with symptoms of weight loss, malaise, anemia, and osteosclerosis. It is used as a fumigant and in making lubricants, detergents, and other chemicals. Acute exposure can severely burn the skin and eyes. Inhaling the vapor can irritate the nose, throat, and lungs, and cause difficulty breathing. Exposure can lead to headache, dizziness, and passing out.