Ozone is known as ozonised oxygen.
Ozone (O3) is a highly reactive gas composed of three oxygen atoms. It is both a natural and a human-made product in the Earth’s upper atmosphere (the stratosphere) and lower atmosphere (the troposphere). Ozone has two properties of interest to human health. First, it absorbs UV light, reducing human exposure to harmful UV radiation that causes skin cancer and cataracts. Second, when inhaled, it reacts chemically with many biological molecules in the respiratory tract, leading to several adverse health effects.
- Ozone, O3, is an allotrope of oxygen.
- Ozone has a pungent odour, and its colour is blue-black in its solid and liquid form.
- Ozone occurs both in the Earth’s upper atmosphere and at ground level.