Hazard symbols are used to warn people about dangerous substances and products. They’re designed to be simple, clear and instantly recognisable, helping you stay safe at home, at work, and in your community. Below is an explanation of the most common symbols you may come across, what they mean, and where they’re typically found.
| Hazard Symbol and Name | Meaning / Description | Common Household or DIY Products |
| Explosive | May explode if heated, shocked, or mixed incorrectly. | • Fireworks and bangers • Aerosol cans (pressurised/explosive risk) |
| Flammable | Easily ignites or releases flammable vapours. | • White spirit / paint thinners • Methylated spirits • Nail polish remover (acetone) • Lighter fluid / barbecue fluid • Aerosol sprays (deodorants, hairsprays) • Petrol and diesel • WD-40 and lubricants |
| Oxidising | Intensifies fire or causes combustion with other materials. | • Bleach (sodium hypochlorite) • Oxygen canisters • Hair dye developers (hydrogen peroxide) • Pool chlorine granules or tablets |
| Corrosive | Can destroy metals or cause severe burns to skin/eyes. | • Drain cleaner (caustic soda) • Oven cleaner • Descalers (acid-based) • Battery acid • Brick or patio cleaner |
| Toxic | Can cause serious harm or death if swallowed, inhaled, or absorbed. | • Rat poison • Antifreeze • Insecticides / pesticides • Old paint strippers |
| Hazardous to the Environment | Toxic to aquatic life or ecosystems. | • Motor oil / engine fluids • Weed killers / herbicides • Insect sprays / slug pellets • Paints and varnishes • Bleach and disinfectants |
| Health Hazard / Ozone Layer | May cause irritation, dizziness, or allergic reactions. | • All-purpose cleaners • Washing-up liquid • Laundry detergents / fabric softeners • Glass cleaners • Degreasers / kitchen sprays • Adhesives / glues |
| Serious Health Hazard | May cause respiratory sensitisation or organ damage. | • Paint strippers • Epoxy resins • Wood preservatives • Aerosol paints / lacquers • Silica dust |
| Gas Under Pressure | Contains compressed gas | • Aerosol sprays • Camping gas / butane bottles • SodaStream CO₂ cylinders • Helium canisters • Propane bottles for BBQs |