Potassium fluoride,anhydrous
           Potassium fluoride,extra pure
           Potassium fluoride,Granular
           Silicon Dioxide
           Hydrofluoric acid
           Synthetic Cryolite
           Potassium Fluoaluminate
           Ammonium bifluoride
           Potassium Bifluoride
           Aluminium fluoride
           Sodium fluoride
           Potassium Fluorosilicate
           Fluorosilicic Acid
           Sodium silicofluoride
           Potassium Hydroxide Flakes
           Magnesium Fluoride
           Magnesium fluorosilicate
           Barium Fluoride
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First assess the situation to decide on the protective measures necessary for yourself. These will include gloves, eye protection and an apron. They may also include Respiratory Protective Equipment (RPE) if you need to go into a room where there is Hydrofluoric acid vapour in the air. Skin: Remove or cut off contaminated clothing. Wear neoprene gloves and protective clothing. Flush the burn with water for at least 5-10 minutes, then apply calcium gluconate gel, gently massaging it into the burn. Continue for at least 15 minutes AFTER pain is relieved. The person applying the gel should wear gloves. Transport to hospital (this can be started as soon as washing is finished). 

Eyes: Immediately flush the eye with water or eyewash and continue for at least 15 minutes. This can be done while the casualty is being transported to hospital. Transport to hospital should be arranged immediately. Inhalation: (Unlikely unless exposed to Hydrofluoric acid at 40-50% or greater)Remove the casualty from the contaminated area immediately and place in fresh air. If necessary, resuscitate. Call an ambulance. Send the casualty to Hospital. Ingestion: Never attempt to induce vomiting. If the casualty is conscious, rinse out the mouth with water. Call an ambulance and send the casualty to Hospital. This could be a life-threatening emergency. Be prepared to resuscitate the casualty.

After receiving the report of the student, school chemistry teacher just required "wash with water, soap or toothpaste wipe point" performance is clearly a lack of knowledge of chemistry. Toothpaste, soap and other alkaline substances commonly used to deal with acid burns, but is not toxic hydrofluoric acid hydrogen ion, but rather a strong penetration of fluoride ions. For emergency treatment of hydrofluoric acid burns, except rinse immediately with plenty of water for about 30 minutes, we should also use calcium gluconate fluoride ion binding agent treatment of the skin, and calcium gluconate cream itself was asked to hydrofluoric acid test essential emergency drugs. In addition, the school also did not inform the students should be able to handle chemical burns to the hospital for diagnosis and treatment, and general hospitals often lack the experience to deal with hydrofluoric acid burns. Because the school lag disposal afterwards, students injured 36 hours before being taken to the Nanjing Military Region General Hospital, but it has delayed the best treatment time.