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As an analytical reagent, in dye and paint industries, in polymers, in metal treatment, in cleaning and textile finishing and as a reagent for dehydration and condensation Oxalic acid dihydrate acts as an analytical reagent, as a reducing agent for photographic films and as mordant in the dyeing process. It is used as a plating agent, a surface treating agent, a grinding agent, a precipitating agent in rare-earth mineral processing, a bleaching agent in textile and a purifying agent in the pharmaceutical industry. It plays an important role in antibiotic medication like oxytetracycline and chloramphenicol. It finds application in water treatment plants to remove calcium waste water. It is also used as a buffer in chromatographic separation as well as bleach for wood, removing black stains caused by water penetration.
Stash, A. I.; Chen, Y. S.; Kovalchukova, O. V.; Tsirelson, V. G. Electron density, electrostatic potential, and spatial organization of ammonium hydrooxalate oxalic acid dihydrate heteromolecular crystal from data of diffraction experiment at 15 K using synchrotron radiation and theoretical calculations. Russ. Chem. Bull. 2013, 62 (8), 1752-1763.
Mokhtary, M.; Qandalee, M.; Niaki, M. R. Highly Efficient Selective Oxygenation of Sulfides to Sulfoxides by Oxalic Acid Dihydrate in the Presence of H2O2. J. Chem. 2012, 9 (2), 863-868.
Hazard Statements: H302-H312-H318
Harmful if swallowed. Harmful in contact with skin. Causes serious eye damage.
Precautionary Statements: P280-P305+P351+P338-P310a-P301+P312a-P321-P501a
Wear protective gloves/protective clothing/eye protection/face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a POISON CENTER/doctor IF SWALLOWED: Call a POISON CENTER/doctor if you feel unwell. Specific treatment (see label). Dispose of contents/container in accordance with local/regional/national/international regulations.