how to use wood bleach oxalic acid

Best answer


To bleach stains from the surface of wood, mix28-30 grams of Oxalic acid crystals with one cup of hot water, and leave it to dissolve completely. Using a brush, apply the mixture on the surface of the wood you wish to bleach and leave it to dry, make sure to cover all the area evenly.

People also ask


  • Does oxalic acid bleach remove stains on wood?

  • (If the wood has oxidized 鈥?for example, cherry darkening 鈥?oxalic acid may lighten it back to its original color.) The bleach can also remove shallow rust stains and alkali stains caused by some wood strippers, but its widest use is in removing dark water stains. The effectiveness of oxalic-acid bleach is clear from this after picture.

  • What is oxalic acid bleach used for?

  • Oxalic acid is a popular choice of bleach among woodworkers because it bleaches and removes stains from wood without altering the natural color of the wood. It is important to bleach wood correctly with oxalic acid to get the best result that this method can offer.

  • What is oxalic acid used for in wood finishing?

  • One of the most useful products in wood finishing that doesn鈥檛 get a lot of attention is oxalic acid, often labeled wood bleach. It鈥檚 useful for removing black water stains without changing the color of the wood. (If the wood has oxidized 鈥?for example, cherry darkening 鈥?oxalic acid may lighten it back to its original color.)

  • How do you clean hardwood floors with oxalic acid?

  • Clean the wood thoroughly with wood cleaner and strip all paint and finish down to the bare wood. Mix the oxalic acid crystals or powder with the recommended amount of hot water. For stains, use 12 to 16 ounces of acid per gallon of water, and use 3 to 5 ounces of acid per gallon.

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