Product Code:
TECHNICAL FEATURES
Chelating agent used in conservation for the controlled removal of salts, encrustations, and metallic oxides, particularly effective in alkaline environments
Composition:
- Tetrasodium salt of ethylenediaminetetraacetic acid (Na₄EDTA)
- Synthetic-based chelating agent
- Very high solubility in water
- Active in strongly alkaline conditions (pH 10–11)
- Compatible with gel carriers (e.g., agar, carboxymethyl cellulose)
Appearance:
- White crystalline powder or clear solution (depending on formulation)
- Fully water-soluble
- Neutral odor
- Solution pH: 10–11
Main applications:
- Selective removal of black crusts, insoluble salts, and metallic oxides from stone materials and resistant surfaces
- Cleaning of sculptures, architectural surfaces, and corroded metal objects
- Application in gel or poultice form for localized and controlled treatments
- Recommended for interventions where an alkaline pH is required for treatment effectiveness
- Used as an alternative to more aggressive agents in conservation protocols
