Oxalic Acid Wood Bleach

Oxalic acid is used to bleach wood when it has been stained by iron. There are many ways iron works it’s way into wood and this is the best remover for those stains when you are working on refinishing wood surfaces. Weighs 16 oz. Have you ever removed the finish from a piece of furniture and found black stains or black rings from metal pots or prolonged water exposure? Have you ever removed the finish from a floor and found black or deep brown pet urine stains in the wood, which no amount of sanding will take out? These are all iron stains caused by the chemical reaction of tannins in the wood mixing with the trace metals in urine and water. Oxalic acid is an all-natural, organic compound. It’s found in vegetables like sorrel, spinach and rhubarb. There are many processes to extract it from vegetation, but modern methods manufacture it through the oxidation of carbohydrates or glucose using nitric acid or vanadium pentoxide. It is a relatively strong acid for its acid group. It is im