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Hydrofluoric acid poisoning


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Alternative Names

Fluorhydric acid


Home Treatment

Seek immediate medical help. DO NOT make a person throw up unless told to do so by Poison Control or a health care professional.

If the chemical is on the skin or in the eyes, flush with lots of water for at least 15 minutes.

Immediately take the person to the hospital.


Before Calling Emergency

Determine the following information:

  • The patient's age, weight, and condition
  • The name of the product (ingredients and strengths if known)
  • The time it was swallowed
  • The amount swallowed

Poison Control, or a local emergency number

If you suspect possible poisoning, seek emergency medical care immediately.




The National Poison Control Center (1-800-222-1222) can be called from anywhere in the United States. This national hotline number will let you talk to experts in poisoning. They will give you further instructions.

This is a free and confidential service. All local poison control centers in the United States use this national number. You should call if you have any questions about poisoning or poison prevention. It does NOT need to be an emergency. You can call for any reason, 24 hours a day, 7 days a week.

Take the container with you to the hospital, if possible.

See: Poison control center - emergency number


What to expect at the emergency room

The health care provider will measure and monitor the patient's vital signs, including temperature, pulse, breathing rate, and blood pressure. Swallowing this acid can cause a severe drop in blood pressure. If the person breathed in fumes from the acid, the health care provider may hear signs of fluid in the lungs when 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:

  • A tube thru the nose into the stomach to empty the stomach (gastric lavage)
  • Endoscopy -- camera down the throat to see burns in the esophagus and the stomach
  • Endotracheal intubation to prevent the windpipe from swelling shut due to burns
  • Magnesium and calcium solutions to neutralize the acid
  • Pain medicines
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