danger signs

• toxic

  ethanol

  
• environmental hazard

  detergents

  
• corrosive

  concentrated acid or alkili

  
• flammable

  ethanol

  
• harmful

  petrol

  
• explosive

  dynamite

  
• gas under pressure

  oxygen tank

  
• moderate hazard

  copper sulfate

  
• health hazard

  cyanide

  
• oxidising

  potassium