Q&A

What is chlorine? Where does it come from? How is it produced? Master the basics of chlorine and discover why it’s the element of surprise.
Questions
  • What is chlorine?

    Chlorine is a chemical element, one of roughly 90 basic building blocks of matter.

  • When was chlorine discovered?

    Chlorine was discovered in 1774 by Swedish pharmacist Carl Wilhem Scheele.

  • Why is chlorine important?

    Chlorine is the element of surprise! 

  • Where does chlorine come from?

    Chlorine is the 19th most abundant chemical element in the Earth.

  • How is chlorine produced?

    Chlorine is produced from one of nature’s most plentiful minerals—common salt, sodium chloride— as well as potassium chloride.

  • Why is chlorine in our drinking water?

    Chlorine is the most commonly used drinking water disinfectant in all regions of the world.

  • Which germs does bleach destroy?

    Chlorine effectively destroys a wide range of disease-causing bacteria, viruses and parasitic protozoa.

  • What's the difference between chlorine and chlorine bleach?

    While chlorine is a chemical element, chlorine bleach is essentially "chlorine to go."

  • What are disinfection by-products?

    Disinfection byproducts, or DBPs, are unwanted chemical compounds formed when chlorine or other disinfectants react with natural organic matter in water. 

  • Is using bleach or other chlorine disinfectants bad for the environment?

    Used properly, consumers can safely use bleach without significant environmental effects.