oxalic acid

noun Chemistry.

1. a white, crystalline, water-soluble, poisonous acid, H2C2O4⋅2H2O, first discovered in the juice of the wood sorrel species of oxalis and obtained by reacting carbon monoxide with sodium hydroxide or certain carbohydrates with acids or alkalis: used chiefly for bleaching, as a cleanser, and as a laboratory reagent.

noun

1. a colourless poisonous crystalline dicarboxylic acid found in many plants: used as a bleach and a cleansing agent for metals. Formula: (COOH) 2Systematic name: ethanedioic acid

n.

1. A poisonous crystalline organic acid found in many plants and used as an agent in chemical reduction.

1. A poisonous, crystalline acid found in a number of plants such as sorrel and the leaf blades of rhubarb. It is used for many industrial purposes, including rust removal and bleaching. Chemical formula: C2H2O4.