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Controls and PPE

First Aid for Chemical Exposure

What to Do When Someone Is Splashed, Breathes In, or Swallows a Chemical

Quick answer

When someone is splashed in the eye with oven cleaner or breathes in cellar gas, the first few minutes decide how serious the injury becomes, so first aid for chemical exposure has to be known in advance, not looked up in the moment. The safety data sheet for each product gives the specific first aid advice, and your COSHH assessment should pull that into clear instructions your staff can act on. Eye and skin splashes from corrosive products are the injuries hospitality sees most, and the response, immediate and prolonged flushing with water, is simple but only works if people know it and the means are in place. This article sets out the first aid response for the main exposure routes and what your premises need to support it.

  • Chemical first aid must be known in advance, drawn from the safety data sheet into your assessment, not looked up in the moment.
  • An eye splash from a corrosive product is an emergency: flush immediately with water for fifteen to twenty minutes and get medical help.
  • For skin contact, remove contaminated clothing and flush with plenty of water; do not try to neutralise a burn with another chemical.

Key takeaways

Chemical first aid must be known in advance, drawn from the safety data sheet into your assessment, not looked up in the moment.
An eye splash from a corrosive product is an emergency: flush immediately with water for fifteen to twenty minutes and get medical help.
For skin contact, remove contaminated clothing and flush with plenty of water; do not try to neutralise a burn with another chemical.
For inhalation, move to fresh air without entering a gassy confined space; for swallowing, do not induce vomiting.
Provide eyewash and running water where corrosive products are used, and send the safety data sheet to hospital with the casualty.

Splashes to the Eyes

A chemical splash to the eye, particularly from a corrosive oven cleaner, descaler, or drain unblocker, is a medical emergency where seconds count, because these products can cause permanent eye damage very quickly. The response is to flush the eye immediately with clean water and keep flushing, typically for at least fifteen to twenty minutes or as the safety data sheet directs, holding the eyelid open and letting the water run from the inner corner outwards so it does not wash into the other eye. Contact lenses should be removed if they can be, but flushing should not be delayed to do so. This is why an eyewash provision, whether plumbed eyewash, a station, or sterile eyewash bottles kept where corrosive products are used, is important in a kitchen. After flushing, the person needs medical attention, and the product details or safety data sheet should go with them so the medical team knows what they are treating.
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Splashes to the Skin

Skin contact is the most common chemical exposure in hospitality, ranging from the irritation and dermatitis that build up from repeated contact with sanitisers to the burns a corrosive product can cause. For a splash, remove contaminated clothing and flush the affected skin with plenty of water, continuing for as long as the safety data sheet advises, which for a corrosive product can be many minutes. Do not try to neutralise an acid or alkali burn with another chemical; water is the right first response unless the sheet specifically says otherwise. Watch for delayed effects, since some burns develop after the initial contact. Beyond the immediate splash, occupational dermatitis from everyday contact is a real and reportable health effect, which is why gloves, good substitution, and not handling neat product matter day to day. Anyone with a significant skin burn or a reaction that does not settle needs medical attention.

Inhalation and Swallowing

If someone breathes in fumes, vapour, or gas, move them into fresh air straight away, keeping yourself safe, and do not enter a confined space such as a gassy cellar to reach them, because you risk becoming a second casualty. Carbon dioxide build-up in a cellar is the serious hospitality case here, and the priority is fresh air and calling for help, with rescue from a confined space left to those equipped for it. For someone who has swallowed a chemical, usually from a decanted bottle mistaken for a drink, do not make them vomit, because bringing a corrosive product back up causes further damage, and follow the safety data sheet, which often advises rinsing the mouth, not inducing vomiting, and seeking urgent medical help. In any case of inhalation or swallowing, take the product container or safety data sheet to hospital so the chemical can be identified quickly.

Being Ready Before It Happens

First aid for chemicals only works if the preparation is in place, which means it belongs in your COSHH assessment and your first aid arrangements, not just in a leaflet. Make sure the first aid response for each high-risk product is written into the assessment in plain terms, drawn from the safety data sheet, and that staff who use the product know it. Provide the means to act: running water and eyewash where corrosive products are used, and the product information to hand so it can go with an injured person. Train staff that the safety data sheet travels to hospital with the casualty. Treat any chemical injury, even a minor one, as a prompt to review the controls that allowed it. Being ready turns a frightening incident into a managed one, and it is exactly the kind of preparation an inspector expects to see behind a COSHH assessment that lists corrosive products.

What to do next

Provide eyewash where corrosive products are used

Fit eyewash or keep sterile eyewash bottles beside oven cleaners, descalers, and drain unblockers so flushing can start immediately.

Write product first aid into the assessment

Pull the first aid advice from each safety data sheet into plain instructions in your COSHH assessment and brief staff on them.

Train staff to send the safety data sheet to hospital

Make it routine that the product container or safety data sheet goes with any casualty so the medical team can identify the chemical.

Common mistakes to avoid

Mistake
Trying to neutralise a chemical burn with another chemical
Instead
Adding acid to an alkali burn or vice versa can make the injury worse. Flush with plenty of water as the first response, unless the safety data sheet specifically advises otherwise.
Mistake
Entering a gassy cellar to rescue a collapsed colleague
Instead
You risk becoming a second casualty. For inhalation in a confined space, raise the alarm and get help equipped for confined-space rescue rather than going in yourself.

Frequently asked questions

What is the first aid for a chemical in the eye?

Flush the eye immediately with clean water and keep flushing for at least fifteen to twenty minutes or as the safety data sheet directs, holding the eyelid open and running the water from the inner corner outwards. Then seek medical attention and take the product details with the casualty.

Should you make someone vomit if they swallow a chemical?

No. Inducing vomiting can cause further damage, especially with corrosive products. Follow the safety data sheet, which usually advises rinsing the mouth, not inducing vomiting, and getting urgent medical help, and take the container to hospital.

What do you do if someone breathes in chemical fumes?

Move them into fresh air while keeping yourself safe. Do not enter a confined space such as a gassy cellar to reach them, as you risk becoming a second casualty; raise the alarm and get appropriate help, and seek medical attention.

Do kitchens need eyewash for chemical splashes?

Where corrosive products such as oven cleaners and drain unblockers are used, a means of flushing the eyes, whether plumbed eyewash, a station, or sterile eyewash bottles kept at the point of use, is important so flushing can begin immediately after a splash.

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