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Oxalic Acid for cleaning and polishing Marble, Mosaic and other calcium based stones. Oxalic acid can also be used for cleaning or bleaching, especially for the removal of rust (iron complexing agent). Oxalic acid is also the perfect chemical for removing stains from timber.
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Oxalic acid is a crystalline powder, which when mixed with water can be used as a cleaning solution for removal of rust, tannin stains and cleaning lime based stones like marble, mosaic and slate.