Which chemical is widely used to unclog drains and sinks?

Author: Dr. Keshawn Nicolas PhD  |  Last update: Sunday, March 2, 2025

While there are many methods for unclogging drains, one of the most effective solutions is using hydrochloric acid (HCl), a powerful chemical cleaner.

What is the best chemical to unclog a sink drain?

9 Best Drain Cleaners, Tested by Experts
  • Best Overall Drain Cleaner. Drano Max Gel Liquid Clog Remover. Read more.
  • Best Drain Cleaner for Hair Clogs. Liquid-Plumr Hair Clog Eliminator. Read more.
  • Best Drain Cleaner for Kitchen Sinks. Green Gobbler Drain Opening Pacs. Read more.

What chemicals are used to unblock drains?

Hydrochloric Acid

In a similar way, this acid, when used in a chemical cleaner, can be poured down a drain pipe or in a kitchen sink and it can help unblock a drain quickly by breaking down the blockages.

What liquid do plumbers use to unclog drains?

Hydrochloric Acid (Muriatic Acid)

Properties and Uses: Hydrochloric acid, also known as muriatic acid, is a highly corrosive acid used extensively by plumbers to clear severe clogs. It reacts rapidly with organic materials in drains, breaking them down into simpler compounds that can be easily flushed away.

Why do plumbers say to not use Drano?

Drano is a very caustic liquid, and extremely dangerous. Sometimes it may not unclog a drain, and it just sits in the drain. If someone were to open that drain without knowing Drano is in it, it could splash on that person and cause severe injury. Also, Drano, over time, will eat away cast iron drains pipes.

Which Drain Opener is the Best? Let's Find Out!

What is the safest drain cleaner?

If the blockage remains, these efforts can still make the cleaner's job easier.
  • Option #1: Baking Soda and Cider Vinegar. ...
  • Option #2: Baking Soda and Lemon Juice. ...
  • Option #3: Alka-Seltzer® ...
  • Option #4: Boiling Water. ...
  • Option #5: Salt, Borax, and Vinegar. ...
  • Option #6: Enzymatic Drain Cleaners.

Does Drano cause damage to pipes?

The answer is yes, but with some caution. Drano can dissolve hair and other organic materials causing the blockage, but it's important to follow the manufacturer's instructions carefully. Using too much Drano or leaving it in the drain for too long can lead to damage on the pipes and potentially cause harm to the user.

Why should you never use baking soda and vinegar to unclog a drain?

The fizzing reaction and gas created may help loosen some small blockages. However, it is not typically strong enough to break down larger clogs or remove hard-to-reach debris. As a result of the above facts, if you have a serious drain clog, using baking soda and vinegar is unlikely to be effective.

What do professionals use to unblock drains?

Drain snakes also called drain rooters or augers, use a long cable with a spiral-shaped head.

What is the strong chemical for clogged drains?

The Santeen Sulfuric Acid Drain Opener proved to be the most potent among all the chemical drain cleaners we tested, effectively dissolving 80% of the hair, 80% of the organic matter, 40% of the grease and 76% of the paper products.

Does green gobbler damage pipes?

Simply put, liquid drain cleaners like Liquid-Plumr, Drano, and Green Gobbler are not designed for frequent use. Because of the chemicals found in these types of products, you could cause irreparable damage to your pipes.

What dissolves concrete in a drain?

Use Croc Crete to Remove Hardened Cement

This is the best method of removing hardened concrete from a drainage system. Croc Crete is a cement softener that attacks concrete at its core. It transforms cement back to its liquid form, allowing you to work it through the drain.

Which chemical is used to unclog drains and sinks?

While there are many methods for unclogging drains, one of the most effective solutions is using hydrochloric acid (HCl), a powerful chemical cleaner.

Can I leave Mr. Muscle drain Gel overnight?

Using innovative drain unblocking technology, Mr Muscle's new biodegradable formula delivers the power to unclog bathroom drains in just 5 hours. Use it at night, let it work its magic and wake up to freely flowing drains.

What works better than Drano?

Some of the best Drano alternatives include using a plunger or pipe snake, soap or salt mixed with boiling water, or baking soda and white vinegar. Also, for maximum effectiveness, you can combine several of these methods together to get rid of the clog.

What do plumbers recommend for clogged drains?

Drain Snakes

Also known as plumbing augers, these versatile, budget-friendly tools are great for hard-to-reach or stubborn clogs in toilets, sinks, tubs and showers. There are several different types: Drum augers or snakes have a motor that rotates the cable.

How do you unclog a severely clogged drain?

Pour one-half cup table salt down the drain, followed by boiling water. Or try a cup of baking soda and a cup of vinegar—let it bubble, wait 15 minutes, then pour boiling water down the drain. You can also try a cup of baking soda and a half-cup of salt; let it sit for several hours, then flush with boiling water.

What chemical dissolves fat in drains?

You might find it difficult to know where to look for caustic soda, but it is available from many hardware shops and online. When hot water is not effective enough you only need to use a few tablespoons of caustic soda in the drain for it to work.

What is the best homemade drain cleaner?

Baking Soda + Vinegar
  • Pour 1/2 cup baking soda, followed by 1/2 cup vinegar down drain.
  • Plug drain and let sit for one hour.
  • Then, pour a pot of boiling water down drain. Repeat if necessary.

Does vinegar damage PVC pipes?

While harmless for most metal and PVC pipes, prolonged exposure to the acidic nature of vinegar might corrode certain metals, like copper. PVC pipes, on the other hand, can withstand these substances without damage.

What do you do if your drain won't unclog?

Pour one cup of fresh baking soda down the drain, followed by one cup of white vinegar. Place a rubber stopper or other sink hole cover over the drain opening. Wait 15 minutes to allow the vinegar and baking soda to unclog your drain, Then take out the drain cover and run hot tap water down the drain to clear the clog.

Why do plumbers not like Drano?

Plumbers unanimously encourage homeowners not to use Drano due to its corrosive nature. The chemicals in Drano can erode not only the clogged material causing the blockage but will also quickly eat away at the metal plumbing pipes themselves, causing more harm than good.

Is boiling water bad for pipes?

Chemical cleaners can eat away at your pipes, and boiling water can melt important components. Over time, this damage can lead to leaks and expensive plumbing repairs.

How to fix a slow draining sink?

How to Unclog a Drain Naturally
  1. Pour boiling water down the drain.
  2. Pour ½ cup of baking soda down the drain.
  3. Pour ½ cup of vinegar down the drain.
  4. Wait 10 minutes.
  5. Pour boiling water down the drain again.
  6. Turn on the hot water faucet to clear out the solution.

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