Chemical burn
A 'chemical burn' is an uncomfortable sensation caused by the destruction of body tissue. It is destroyed by various chemicals. For example, concentrated sulfuric acid makes very bad chemical burns. Hydrochloric acid makes milder burns. There are several ways to protect against chemical burns, such as wearing gloves and a lab apron when working with chemicals. Each chemical has its own way to remove it from the skin, but normally drenching the burn with water should help.