Hydrofluoric acid is an aqueous solution of hydrogen fluoride gas, a clear, colorless, corrosive liquid that emits smoke and has a strong irritant odor. Hydrofluoric acid is a weak acid with extremely strong corrosiveness, capable of strongly corroding metals, glass, and silicon containing objects. Inhaling vapors or coming into contact with the skin can cause incurable burns. Laboratories generally use fluorite (mainly composed of calcium fluoride) and concentrated sulfuric acid to produce it, which needs to be sealed in plastic bottles and stored in a cool place.

Skin contact: Immediately remove contaminated clothing, rinse with plenty of flowing water for at least 15 minutes, and seek medical attention.

Eye contact: Immediately lift the eyelids and thoroughly rinse with plenty of flowing water or saline solution for at least 15 minutes. Seek medical attention.

Inhalation: Quickly leave the scene and move to a place with fresh air. Keep the respiratory tract unobstructed. When breathing difficulties occur, oxygen should be administered and artificial respiration should not be performed, which may cause the person performing the artificial respiration to inhale hydrogen fluoride gas. Administer 2-4% sodium bicarbonate solution by nebulization inhalation. Seek medical attention.

Ingestion: Rinse mouth with water and drink milk or egg whites. Seek medical attention.

Storage precautions

Store in a cool and ventilated warehouse. Stay away from sources of fire and heat. The storage temperature shall not exceed 30 ℃, and the relative humidity shall not exceed 85%. Keep the container sealed. It should be stored separately from alkali, active metal powder, and glass products, and avoid mixing storage.