19 results about "Squaric acid" patented technology

Squaric acid, also called quadratic acid because its four carbon atoms approximately form a square, is a dibasic organic acid with the chemical formula C₄H₂O₄. The conjugate base of squaric acid is the hydrogensquarate anion C₄HO⁻₄; and the conjugate base of the hydrogensquarate anion is the divalent squarate anion C₄O²⁻₄. This is one of the oxocarbon anions, which consist only of carbon and oxygen.