How to Clear Clogged Toilets Using Sulphuric Acid

Quck answer

Sulphuric acid can be used to treat clogged toilets. Here is a step-by-step guide:

1. Ensure safety: Put on protective clothing such as gloves and goggles before handling sulphuric acid.

2. Dilute the acid: Mix one part sulphuric acid with ten parts water in a plastic container. This will create a milder solution.

3. Pour the mixture: Slowly pour the diluted acid into the toilet bowl, aiming for the drain. Be careful not to splash or spill the acid.

4. Let it sit: Allow the solution to sit in the toilet bowl for at least 30 minutes. The acid will help break down and dissolve the clog.

5. Flush the toilet: After the designated time, flush the toilet to see if the clog has cleared. If not, you may need to repeat the process or try a different method.

Remember, handling sulphuric acid requires caution. If you are unsure or uncomfortable using it, it’s best to consult a professional plumber.


Dealing with a clogged toilet can cause significant inconvenience, and if you are running a business, it may even violate health codes. Whether you have a single bathroom at home or multiple toilets in your business, it is crucial to address these clogs promptly. Sulphuric acid is a powerful solution that can dissolve even the most stubborn clogs, but it is vital to use this product safely.

Step 1

Visit a hardware store or a plumbing supply center and examine the commercial drain cleaners available. The most effective commercial drain cleaners usually contain high concentrations of chemicals, such as lye and sulfuric acid.

Step 2

Review the chemical composition of each drain cleaner and select the one with the highest concentration of sulfuric acid. Using pure sulfuric acid could potentially damage your plumbing system at home or in the office. However, commercial drain cleaners are formulated to provide a balance between safety and effectiveness.

Step 3

Prior to attempting to clear the blocked drain, ensure that you put on a pair of gloves and safety goggles. The sulfuric acid and other chemicals in the drain cleaner can be harmful if they come into contact with your skin or eyes.

Step 4

Follow the instructions printed on the bottle and pour the drain cleaner into the toilet. It is essential to always read and adhere to the instructions and safety guidelines before attempting to unclog a drain.

Step 5

Allow the specified amount of time for the drain cleaner to work, and then attempt to flush the toilet. If the clog is not completely eliminated, repeat the application of the drain cleaner.

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