Structural abbreviation: HOOC-COOH

Oxalic acid, also known as oxalic acid, is the simplest dibasic acid with the molecular formula of C2H2O4. Oxalic acid usually exists in the form of dihydrate (H2C2O4 2H2O), which is a colorless and transparent monoclinic crystal with a toxic melting point of 10 1℃ ~ 102℃. When it melts, it loses crystal water and begins to sublimate. Anhydrous oxalic acid crystallizes in glacial acetic acid, which is rhombic and hygroscopic. Its melting point is 189.5℃ (decomposition), and sublimation begins around 157℃. When the temperature rises again, it can be decomposed into carbon monoxide, carbon dioxide, H2O and CHOOH. Oxalic acid is an important chemical raw material, which is widely used in medicine, dyes, coatings, separation and purification of rare earth metals and bleaching of clothes. Molecular formula: H2C2O4

Structural abbreviation: HOOCCOOH

Oxalic acid, namely oxalic acid, is one of the simplest organic dibasic acids. Simple structure HOOCCOOH Generally, it is a colorless and transparent crystal, which is harmful to the human body, which will make the pH in the human body lose balance and affect the development of children. Oxalic acid plays an important role in industry. Oxalic acid can remove rust. Oxalic acid is widely distributed in nature, and often exists in the cell membranes of plants such as Funiu flower, sheep hoof, Oxalis, Rumex, etc. Almost all plants contain oxalate.