Forgot a pot in the sink? Don't let rust spoil your day, or your sink. Try these no-fail methods to remove rust.

Rust stains can sometimes be removed from concrete by scrubbing with a solution of four ounces of oxalic acid in a quart of water. Oxalic acid is sold in crystal or powder form at paint stores.

A: Oxalic acid is a potent but toxic cleaner that removes rust and stains caused by iron, water and tannic acid. It's available in dry crystal form, to be dissolved in warm water for use.

I tried bleach and a chemical remover to no avail. Can you help? A: Rust stains on concrete seem to respond best to acids of various types. The classic treatment is oxalic acid, which is sold at […] ...

Potatoes contain oxalic acid, which converts rust into a water-soluble salt that dissolves in water and easily rinses away. Cut a raw potato in half. Put a few drops of dish soap on the cut sides.

Not too many years later, I learned that oxalic acid can solve a different problem. A reader had written to me about removing rust from concrete. I asked a chemist friend for advice and he said ...

The secret is oxalic acid. Found naturally in rhubarb and other vegetables such as spinach, ... I keep it handy in my laundry room to remove rust stains from the inside of my clothes washer.

Oxalic acid solutions are the go-to cleaner for exterior redwood. If you recall your high school chemistry, you know that acidic solutions have a pH lower than 7. Caustic chemicals like many ...

According to Future Market Insights, the oxalic acid market is projected to grow from USD 1 billion in 2025 to USD 1.7 ...

Every week, readers reach out to me with fantastic questions about a column of mine they have just read. Often they ask why I didn’t delve deeper into the topic. The answer is that newspapers ...