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Chemical Burns First Aid

Chemical burns can happen quickly and may be worse than they first look. This page does not give treatment steps; it explains what to prepare, when to call 911 and where to learn proper first aid.

What counts as a chemical burn?

A chemical burn happens when a substance damages skin or eyes on contact. Some products cause damage right away, while others may seem mild at first and get worse over time.

Farm sources include fertilizers, ammonia, lime, acids, bases, cleaning products and some pesticides. The label and the safety data sheet list the hazards and the first aid advice for the product involved.

When should I call 911?

Call 911 if someone has a serious burn, if the eyes are involved, if the person is having trouble breathing, has been exposed to a gas or large amount of product, or seems confused or unwell. If you are unsure, call.

Stay on the line and follow the dispatcher's directions. Tell them what the product is, if you know, and keep the container or label ready for responders.

Do not wait to see whether a burn gets worse before deciding to ask for help. Delay can be costly with some products, and dispatchers would much rather take a call that turns out to be minor.

• Burns involving the eyes or face.
• Any trouble breathing or sign of exposure to gas.
• Large areas of skin or a very deep injury.
• Anyone who is unresponsive, confused or in severe pain.

Why doesn't this page list first aid steps?

The right first aid depends on the product, and mistakes can make an injury worse. Advice that works for one chemical can be harmful with another.

For that reason this site points you to authoritative sources: the safety data sheet, your local poison control center, the American Red Cross and a recognized first aid course. Learn them before you need them.

Spend a little time reading the first aid section of the safety data sheets for your most-used products, so that the wording is familiar. Familiarity does not replace training, but it helps you stay calm.

How can I prepare ahead of time?

Keep safety data sheets where anyone can find them, and know the first aid section before an emergency. Post the farm address and the number for emergency help near phones and in the shop.

Take a first aid course from a recognized provider, and ask whether it covers chemical exposures. Make sure each person who handles chemicals knows what is in your first aid supplies and where they are kept.

Include seasonal and young workers in your first aid planning. They may not know the products, and they may hesitate to speak up, so tell them directly that reporting any splash or contact right away is expected and welcome.

What equipment should be nearby?

Places where hazardous chemicals are mixed or handled should have the first aid and washing equipment that the product guidance and workplace rules call for. See the separate articles on eye wash stations and emergency showers for the general picture.

Equipment only helps if it works and if people know where it is. Check it on a schedule, and practice walking to it with your eyes closed so that you can find it in a real emergency.

What should happen after the emergency?

Anyone with a chemical injury should be seen by a medical professional, even if the pain eases. Bring the label or safety data sheet so that clinicians know what they are treating.

Afterward, look at how it happened. Was the person trained? Was the right gear nearby and in use? Was the plan clear? Use the answers to improve the system, without blaming the person who was hurt.

Where can I learn proper first aid?

The American Red Cross and other recognized providers teach first aid and CPR in many communities, and your extension office or ag safety organization may know of farm-specific training. Ask them what is offered near you.

The U.S. Department of Labor and OSHA also publish information about workplace first aid expectations for employers. Check there for what applies to farms that hire workers. Remember that people may feel embarrassed or try to tough it out after a splash. Make it clear on your farm that speaking up right away is expected, and that nobody will be teased or blamed for asking for help or calling 911.

Last reviewed: November 12, 2026. Written by the Farm Safety Editorial Team. See our editorial policy.