How to buy muriatic acid

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How to buy muriatic acid
Muriatic acid is sometimes used to clean swimming pools. (GYRO PHOTOGRAPHY/amanaimagesRF/amana images/Getty Images)

Muriatic acid is a potent chemical often used to reduce pH in swimming pools, to clean masonry or tile, and to etch metal. Muriatic acid is considered a hazardous waste. It can damage clothing, skin, metals and other items, so it should be used only as a last resort and with extreme caution.

Skill level:


  1. 1

    Ask for muriatic acid at hardware centres or home supply shops. It's also called hydrochloric acid and is often stocked near paint or outdoor supplies.

  2. 2

    Check your local swimming pool shop or the pool section at your local department store. Look at the product labels to find solutions that contain muriatic acid in the strength you need.

  3. 3

    Order muriatic acid from a dealer who sells specialty cleaning products, chemicals or marine supplies. You can also buy it at online sites, such as Amazon and eBay.

  4. 4

    Prepare a space to store the muriatic acid. It should be in a space that is out of the reach of children and away from other chemicals that could cause a dangerous reaction. Check the product label for storage and disposal information.

  5. 5

    Look for alternatives to muriatic acid. Phosphoric acid and TSP (trisodium phosphate) are heavy duty cleaning products that are safer to use and may produce the same results. Consider renting a mechanical tool to clean masonry.

  6. 6

    Stock up on other items to help you use the acid safely, including acid resistant gloves, goggles, a respirator, rubber boots and resistant coveralls. Get a tarpaulin to cover plants and grass if the acid will be used outdoors.

  7. 7

    Purchase neutralising agents, such as garden lime or baking soda, that can be applied if the acid gets spilled. Have plenty of containers of water nearby when you work with the acid.

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