Oxalic acid, or oxalate, is a naturally occurring organic compound in plant foods like vegetables, fruits, grains, and nuts. Your body also produces small amounts of oxalate. Oxalic acid is sometimes ...

Q: Thank you so much for your article on rust and oxalic acid ("Rust isn't her best color," Jan. 7). We have had this problem for years! And it is frustrating. We even have our water treated through ...

Q: My concrete sidewalk and driveway have large brown rust stains that I haven’t been able to remove. I tried bleach and a chemical remover to no avail. Can you help? A: Rust stains on concrete seem ...

Do you remember asking the classic question in high school chemistry class, “When will I ever use this?” I admit that I was one who posed this question loud enough that I was rewarded with an ...

Q: I've heard that spinach and some other vegetables contain significant amounts of oxalic acid, which can interfere with absorption of some minerals. What do you think about the oxalic acid issue? A: ...

Oxalic acid, the toxic substance that police investigators blame for the deaths of those killed in the recent milk tea poisoning in Manila, appears harmless enough in its crystalline form as it looks ...

Removing carbon dioxide from power plant emissions is a good idea to start with -- and it may have an extra economic benefit. Engineers are presenting results on turning carbon dioxide into oxalic ...

Rhubarb is a plant that enjoys cold climates and is found in mountainous and temperate areas of the world like Northeast Asia. The species Rheum x hybridum is commonly grown as an edible vegetable ...

Researchers are sounding the alarm about a dangerous interaction between oxalic acid and MRI contrast agents. This common compound found in many foods could promote the toxic buildup of gadolinium in ...

Manila’s chief health officer said a proposal to impose a local ban on oxalic acid—the substance found in the bodies of the two victims of apparent milk tea poisoning last month—needs careful study as ...