Oxalic Acid Dihydrate (C₂H₂O₄·2H₂O) – Usage Instructions
1. For Rust and Stain Removal (Metal Cleaner/Stain Remover):
Use: To remove rust from iron or metal surfaces.
Preparation Method:
- Dissolve 20–50 grams of Oxalic Acid Dihydrate in 1 liter of hot water.
- Apply the solution to the stained area using a brush or cloth.
- Wait for 10–15 minutes, then rinse thoroughly with clean water.
2. For Tile and Marble Cleaning:
- Use: To remove yellow stains or water marks from white tiles or marble.
Preparation Method:
- Mix 25–40 grams of Oxalic Acid Dihydrate in 1 liter of water.
- Apply with a sponge or brush. After 5–10 minutes, rinse thoroughly with water.
3. For Wood Bleaching:
- Use: To lighten old stains or dark color on wood surfaces.
Preparation Method:
- Mix equal parts of Oxalic Acid Dihydrate and hot water to make a paste.
- Apply to the wood using a brush.
- Once dry, rinse well with clean water.
4. For Removing Fabric Stains (Textile Stain Remover):
Use: To remove ink, iron, or metallic stains from fabric.
Preparation Method:
- Dissolve 10–20 grams of Oxalic Acid Dihydrate in 1 liter of water.
- Soak the stained fabric in the solution for 30 minutes.
- Then wash it with regular detergent.
Safety Precautions:
- Always use gloves, goggles, and a mask
- Avoid direct contact with skin or eyes
- Keep out of reach of children
- Wash hands and containers thoroughly after use