Oxalic acid

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What Wikipedia says

Oxalic acid is an organic acid with the systematic name ethanedioic acid and chemical formula HO−C(=O)−C(=O)−OH, also written as (COOH)2 or (CO2H)2 or H2C2O4. It is the simplest dicarboxylic acid. It is a white crystalline solid that forms a colorless solution in water.

Excerpt from the Wikipedia article “Oxalic acid”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

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