10 Oxalic Acid Tips for Home, Garden & Garage
1. Remove Rust Stains from Clothes & Surfaces
Intro: Rust stains ruining your fabrics or sinks? Oxalic acid is your hero!
Recipe: Mix 1 tablespoon oxalic acid crystals with 1 litre warm water.
Steps:
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Soak stained fabric for 20 minutes (test a small area first!).
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For surfaces, scrub with a cloth dipped in the solution.
Tip: Rinse thoroughly after use.
Safety: Wear gloves and goggles!
2. Restore Faded or Stained Wooden Furniture
Intro: Sun-bleached or water-damaged wood? Bring it back to life!
Mix: 100g oxalic acid + 1 litre warm water.
Steps:
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Brush onto wood, leave for 10 minutes.
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Neutralise with water + baking soda (2 tbsp per litre).
Note: Sand lightly after drying for a smooth finish.
3. Clean Garden Decking & Outdoor Timber
Intro: Mouldy deck? Brighten it in minutes.
Method: Dissolve 150g oxalic acid in 5 litres water.
Steps:
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Scrub deck with a stiff brush.
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Rinse with a hose.
Bonus: Repeat yearly to maintain timber.
4. Brighten Yellowing White Clothes
Intro: Whites lost their sparkle? Try this laundry hack!
Recipe: Add 1 teaspoon oxalic acid to your washing machine’s rinse cycle.
Why It Works: Breaks down stubborn dirt and mineral deposits.
Caution: Don’t use on coloured fabrics!
5. Clean Metal Garden Furniture
Intro: Rusty patio chairs? Make them shine again.
Mix: 2 tbsp oxalic acid + 1 litre hot water.
Steps:
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Scrub metal surfaces with a steel wool pad.
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Rinse and dry to prevent new rust.
6. Prep Timber for Staining or Painting
Intro: Prepping wood? Oxalic acid ensures a smooth base.
Steps:
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Clean wood with oxalic acid solution (see Blog 2).
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Let dry completely before sanding or staining.
Tip: Perfect for DIY carpentry projects!
7. Revive Old Bricks or Stone Pathways
Intro: Dirty bricks? Remove moss and stains naturally.
Method: Mix 100g oxalic acid + 5 litres water.
Steps:
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Spray on bricks/paving.
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Scrub and rinse after 15 minutes.
Warning: Keep plants covered – acid can harm them!
8. Remove Ink Stains from Carpentry Tools
Intro: Ink stains on tools or workbenches? Easy fix!
Mix: 1 tsp oxalic acid + 250ml warm water.
Steps:
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Dab solution onto stains.
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Wipe clean with a damp cloth.
9. Clean Algae from Garden Pots & Paths
Intro: Slippery green algae? Bust it safely.
Recipe: 50g oxalic acid + 2 litres water.
Steps:
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Spray on affected areas.
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Scrub with a brush and rinse.
Tip: Works on concrete, tiles, and plastic!
10. Refresh Vintage Carpentry Projects
Intro: Restoring old wooden doors or frames?
Steps:
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Strip old paint/varnish.
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Apply oxalic acid to remove deep stains.
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Sand and refinish.
Pro Tip: Use a mask to avoid inhaling dust!
General Safety Notes for All Posts:
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Always wear gloves, goggles, and a mask.
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Keep oxalic acid away from children/pets – it’s toxic if swallowed.
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Rinse surfaces thoroughly after cleaning.
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Neutralise spills with baking soda + water.
Where to Buy in SA:
Find oxalic acid powder online at Takealot.com in 100g and 900g containers.