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Potassium Dichromate is also known as Potassium Bichromate or Bichromate of Potash. It is a bright orange-red solid that is dissolved in water and used to stain woods. To make a stock solution dissolve 2 ounces in a pint of water. To use as a mordant dilute with water. It is most effective in staining woods that are with high in tannin such as oak, mahogany and walnut. The color it produces depends on the wood, but it is generally red to brown in color. It will also stain woods that are low in tannin by prestaining with tannic acid solution. It is the best known and most used of the common mordants. It is used extensively as a mordant for the natural dyes and to give better penetration to water soluble aniline dyes. Use this chemical with caution as it is poisonous.

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