oxalic acid

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oxalic acid
Posting date : Jun 21, 2010
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M.W.:126 Molecular formula:(COOH)2.2H2O Proportion:1.653 Nature: Colorless crystalline, often contain two molecules JieJingShui, heated to 100 degrees JieJingShui lost, as water oxalic acid. No smell, taste is sour. In 100 ° c, start at 125 ° c, sublimation of sublimation, and began to decompose. More than 10,000 times strong acid acetic acid, is the acid. Oxalic acid has strong reducing and antioxidant effects are easily oxidized carbon dioxide and water, Oxalic acid is mainly used for production and bleach, reducing antibiotic and borneol ect drugs and refining rare metal solvent, dyestuff, tanning agent for reducing metal surface cleaning and processing, ree extraction, textile printing &dyeing and leather processing, catalyst preparation. Oxalic acid can be used to rust. And the formation of acid type oxalic acid salt solubility. In addition, still can be used for synthesis of oxalic acid ester of oxalic acid, salt and other products, and grass in dimethyl oxalate ethyl ester and sodium oxalate, calcium oxalate maximum yield. Harm and matters needing attention Oxalic acid in human body is not easy oxidative decomposition, the metabolism of the product, belong to acidity material, can cause human body lost balance ph, overeating will poisoning. And in the human body if meet oxalic acid calcium and zinc and calcium oxalate generation, absorption and oxalic acid zinc and calcium excretion, influence and zinc intake. Children's growth needs a lot of zinc and calcium. If the body lacks calcium and zinc, not only can cause bone and teeth dysplasia, but also affect mental retardation. Excessive intake of oxalic acid can also cause calculi. Oxalic acid can be derusted, but there are certain toxicity. When using, don't eat or drink. Skin contact oxalic acid after rinse. But be careful when using oxalic acid, of stainless steel strong corrosive. High concentrations of oxalic acid also easy to corrosion. Oxalic Acid 99.6% Total Acidity%-----------------------------------99.6 min Ash%----------------------------------------------0.1 max Iron%----------------------------------------------0.02 max Loss on ignition%-----------------------------0.08 Max Sulfate%------------------------------------------0.1 Max Chloride------------------------------------------20ppm Max Heavy metal-------------------------------------10ppm max

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