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94% 62-66 per kilogram
99% 65-70 per kilogram
Uses : 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. Oxalic acid is sometimes used in the aluminum anodizing process, with or without sulfuric acid.