Oxalic Acid Rust Remover
CAS Number: 144-62-7
Oxalic acid rust remover is a mild organic acid that selectively dissolves iron oxides and rust without aggressively attacking the base metal, making it ideal for gentle rust removal from delicate or precision metal parts. Oxalic acid forms soluble iron oxalate complexes that are easily rinsed away, leaving a clean metal surface. It is widely used in wood bleaching, textile rust stain removal, stone cleaning, and metal surface preparation for fine restoration work.
Technical Specifications
| pH | 0.7-1.2 (5% solution) |
| appearance | White crystalline powder |
| purity (%) | ≥99 |
| active content (%) | ≥99 |
| solubility in water (g/100mL) | 9.5 at 20°C |
Applications
- Gentle rust removal from precision and decorative metal parts
- Stone, concrete, and masonry iron stain removal
- Wood surface iron tannate stain removal and bleaching
- Textile and fabric rust stain treatment
- Porcelain and ceramic rust stain cleaning
Key Features
- Selective rust removal with minimal base metal attack
- Forms soluble iron oxalate for easy rinsing
- Suitable for sensitive substrates where strong acids are harmful
- Multipurpose: effective on metal, stone, wood, and textiles