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• n  a toxic colorless crystalline organic acid found in oxalis and other plants; used as a bleach and rust remover and in chemical analysis

• ethanedioic acid

News & Articles

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• AIMEE BLUME: Saucy sorrel enlivens salads
  Sorrel (Rumex acetosa) is an early-growing spring herb suitable for salads or seasoning. It is a very tart herb, full of sour oxalic acid, the chemical which also gives rhubarb its sourness (as well as the annoying yellow-flowered shamrock-shaped oxalis weed that springs up in your garden all summer).
  April 30, 2014 - The San Angelo Standard-Times