Oxalic_Acid_99.5% 3000 (3kg) x 4
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Molecular formula: C2H2O4 2H2O
Oxalic acid is an organic compound with the formula C₂H₂O₄. It is a colorless crystalline solid that forms a colorless solution in water. Its condensed formula is HOOCCOOH, reflecting its classification as the simplest dicarboxylic acid.
Oxalic acid is toxic because of its acidic and chelating properties. It may cause burns, nausea, severe gastroenteritis and vomiting, shock and convulsions. It is especially toxic when ingested. As little as 5 to 15 grams (71 mg/kg) may be fatal tohumans.
Oxalic acid is rubbed onto completed marble sculptures to seal the surface and introduce a shine. Oxalic acid is also used to clean iron and manganese deposits from quartz crystals. Oxalic acid is used as a bleach for wood, removing black stains caused by dissolved iron that binds to the wood during water penetration.