decolour BrE
decolourise BrE
decolor AmE
decolorize AmE

While I was still sitting under the sickly, drowsy influence of the drugs that decolourise blood, there came a repeated knocking at the door.

Oxalates also decolourise KMnO and give a white precipitate with CaCl.

In the presence of water, sulfur dioxide is able to decolorize substances.

Ferric chloride is often used to decolorize cotton seed oil.

It also can decolorize skin.

The female magnes ore did not attract iron, but was used to decolorize glass.

Another method of producing rosé that is to severely decolorize a red wine using absorbent charcoal such as activated carbon.

The sulfuric acid solution does not decolorize as strongly as the hydrochloric acid.

The fungus has been investigated for its ability to decolorize synthetic dyes that are used in the textile, plastics, biomedical and foodstuff industries.

(If you are a person of color, you may need to eliminate or limit benzoyl peroxide because it can decolorize the skin.

It is frequently used to decolorize, filter, and purify animal, mineral, and vegetable oils and greases.

Shown to have the enzymes laccase and manganese peroxidase, the fungus is able to decolorize the recalcitrant polymeric dye R-478.

They are used to help convert one type of sugar into another type of sugar, and to decolorize and purify sugar syrups.

More possibilities: d-Alpha tocopherol, beta-carotene or ascorbic acid (or ascorbate salt)) Let well-stirred solution sit overnight in a closed container to fully decolorize.

While it can be used to decolorize a wine, often much more than just color is stripped from the wine which makes this method very rarely used in the production of quality rosés.

If the color is already set to pink with dilute alkaline solution (NaOH or KOH, NOT (repeat NOT) NH4OH) the bleach solution will simply decolorize the phenolphthalein solution.