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FDC™ 99.6% Pure Oxalic Acid Powder | Cry GSO
FDC™ 99.6% Pure Oxalic Acid Powder | Cry GSO
FDC™ 99.6% Pure Oxalic Acid Powder | Cry GSO
FDC™ 99.6% Pure Oxalic Acid Powder | Cry GSO
FDC™ 99.6% Pure Oxalic Acid Powder | Cry GSO
FDC™ 99.6% Pure Oxalic Acid Powder | Cry GSO
FDC™ 99.6% Pure Oxalic Acid Powder | Cry GSO
FDC™ 99.6% Pure Oxalic Acid Powder | Cry GSO
FDC™ 99.6% Pure Oxalic Acid Powder | Cry GSO
FDC™ 99.6% Pure Oxalic Acid Powder | Cry GSO

FDC™ 99.6% Pure Oxalic Acid Powder | Cry GSO

Regular price $24.99 $0.00 free shipping
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#1 All-Natural, Bleaching Agent Used for Wood, Rust, Quartz, Pool Stains, and Hundreds of Other Uses!

oxalic acid banner

Oxalic acid is an essential household chemical that can be used, like many acids, as a cleaner. For example, use 99.6% Pure Oxalic Acid as a rust remover, cleaning agent, wood stain lifter, bleaching agent, etc. Oxalic acid is a natural component of plants and vegetables (such as buckwheat and rhubarb) and is available for purchase in powdered form. Oxalic powder should be mixed with water to turn into Oxalic acid. Oxalic Acid can become dangerous if used in high doses. Use moderately to ensure safe and effective application.

oxalic acid e-book

  • GREAT FOR: Rust removal, iron stain removal, bleaching agent, wood stain removal, cleaning quartz, pool stain remover, and much more!
  • USE for home, industrial and commercial applications
  • SAFE resealable storage container with child resistant cap
  • BEEKEEPERS love using it too!



Some Oxalic Acid Uses Include..

boat hull rust remover
Cleans Boat Hulls
quartz polishing
Cleans & Bleaches Quartz
rusty shingles
Cleans Rusty Shingles


wood bleaching

laundry rust remover


Oxalic acid can be used as a bleaching agent for both wood and stone. Wood, when exposed to the elements, can turn gray. When oxalic acid is applied on an old and graying wood floor, it brings back the wood floor’s natural white color. Actually, this acid is often used when preparing to stain old wood floors. It is also used by furniture manufacturers to lighten heavily stained areas of wood furniture in preparation for refinishing.

Removes Stains

Oxalic acid effectively removes ink, food stains, and many other types of stains. It is a gentle stain remover that eats the stain but leaves the base surfaces, such as wood, intact. You can use oxalic acid to remove most stains found on stone, brick, linoleum, wood, clothing and vinyl surfaces. However, do not use oxalic acid if your flooring is sealed as it will eat through the finishing. Although you can also use oxalic acid to remove stains from fabrics such as linen and cotton, it will take a lot of time, so it is better to have your fabrics dry cleaned instead.

oxalic acid rust removal

Removes Rust in Common Areas

Oxalic acid powder is also used to remove rusts that are commonly found on plumbing pipes and kitchen countertops, and is a major ingredient found in commercial rust removers for sinks, tubs, and metal rust stains.

oxalic acid granules other uses

Other Uses 

Aside from bleaching, rust removing, and stain removing, oxalic acid granules can be used as a reducing agent in developing photographic film. It can also be used in wastewater treatment to remove calcium from wastewater. Lastly, oxalic acid is also used as a grinding agent when polishing marble.



For Dilution: You can either make it into a paste or create an acid bath. For an acid bath you can use between 1/2lb - 1lb of oxalic acid to 1 gallon of water depending on the application. If you'd like to create a paste use 3 parts oxalic acid to 1 part water ratio. A paste can be used for small areas like removing rust on nails and an acid bath can be used for bleaching wood or cleaning up a boat hull. If you'd like to make a spray solution, add 1 tablespoon of oxalic acid per 8oz of water. This can be used to treat rust stains on several applications.

Discard Acid Bath: To discard your acid solution, pour baking soda in it. The solution will bubble, so keep pouring it in until it stops bubbling. Then, use a pool test strip and measure the pH to be sure that all of the oxalic acid is neutralized. You'll want to make sure it reads higher than 7 (7.5 is ideal). At this point all of the acid will have converted to it's nitrous salt form, which is safe and harmless. Feel free to dump it on your lawn (away from your pets reach as a pre-caution) or on your driveway if it's cold outside. It won't kill your grass, so you won't have to worry about it destroying your lawn.

General: Always handle oxalic acid in a well ventilated area. Keep out of reach of children. Always mix oxalic acid to water, not water to oxalic acid. Do not mix in metal containers as the chemical can eat away at it, use plastic or ceramic.


Frequently Asked Questions

We sell Oxalic Acid as a raw chemical that has multi-uses. We have not directly tested it to kill moss & mildew. Reports received are mixed.

One states that Oxalic acid generally brightens the wood surface, but is not very effective for removing algae or mold.

Another states to use a blend of 3 tablespoons of oxalic acid into half a quart of water to remove the stain usually left behind by a mold infestation. Lastly, clean everything with water, and then dry the wood completely.

Other solutions:
Make a chlorine bleach and water solution in the ratio of 1:1 and then use it on the mold.

Spray white vinegar generously onto the dirty mold, and refrain from rinsing. The odor will vanish in some time.

It has a two year shelf life.

Oxalic Acid is sold as a raw chemical with multi-uses. We have not directly tested it to polish the surface of natural stone but reports indicate that it has been used successfully for that purpose.

Why should you order from us?

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