How To Bleach Wood With Oxalic Acid. Oxalic acid, sold in powder or crystal form, is used to remove black water marks from wood. If solution cools before job is. For stains, use 12 to 16 ounces of acid per gallon of water, and.

In this post, we explain how you can use liquid household bleach to disinfect hard surfaces. This bleaching effect may provide initially pleasing results, but over a period of several months you must apply oxalic or citralic acid (deck brightener) after using sodium percarbonate in the cleaning process. Apply a liberal amount of the mixture to the timber using a.

* we are stripping a wood table and it has some stains.

* marcella.oxalic acid is probably the best all around wood bleach.but its extremely dangerous, a pretty potent poison. I want it much lighter & less red. * marcella.oxalic acid is probably the best all around wood bleach.but its extremely dangerous, a pretty potent poison. Apply a liberal amount of the mixture to the timber using a. So, after one year unopened on a never mix bleach with any product containing ammonia or acids (such as toilet bowl cleaners, rust. 25 grams of this substance is added to 100 ml of ethyl alcohol. In rust stain removal without harming gel coat, fibre glass, steel and other metal surfaces. Rainbow oxalic acid is one of the finest bleaching agents, especially for use on wood.