Product Category: Water Treatment Chemicals / Chelating Agents / Detergent Raw Materials
Chemical Name: Tetrasodium Ethylenediaminetetraacetate
Alternative Names: Tetrasodium EDTA / EDTA Na₄ / EDTA-4Na
CAS Number: 64-02-8
Chemical Formula: C₁₀H₁₂N₂Na₄O₈
Molecular Weight: Approx. 380.2 g/mol
Appearance: White powder for typical solid grade
Product Overview
Tetrasodium EDTA is a powerful chelating and sequestering agent used to bind metal ions such as calcium, magnesium, iron, copper, manganese and zinc.
It is widely used in water treatment, detergents, industrial cleaning and chemical formulations to control hardness ions and prevent unwanted reactions caused by trace metals.
Typical Powder-Grade Reference Specification
| Property | Typical Reference |
| SKU | MCS-E1 |
| Appearance | White powder |
| EDTA-Na₄ Concentration | Approx. 86–88% for common hydrated powder grades |
| pH – 1% Solution | Approx. 10.5–12.5 |
| Bulk Density | Approx. 620–760 g/L |
| Solubility | Soluble in water |
| CAS Number | 64-02-8 |
| Molecular Weight | Approx. 380 g/mol |
A BASF commercial tetrasodium EDTA powder reference specifies approximately 86–88% EDTA-Na₄ and pH 10.5–12.5 in a 1% aqueous solution. Different anhydrous, hydrated and liquid grades have different assays.
Applications
- Water-softening formulations
- Industrial cleaning
- Detergent manufacturing
- Boiler and process-water treatment
- Metal treatment
- Textile processing
- Pulp and paper
- Polymer processing
- Oil-industry formulations
- Personal-care formulations where appropriate
- Control of heavy-metal ions
Key Benefits
- Strong chelating ability
- Controls hardness ions
- Helps prevent scale and precipitation
- Improves cleaning-product performance
- Helps improve formulation stability
- Works across a broad alkaline pH range
Packaging
Typically supplied in moisture-resistant industrial bags.
Storage
Tetrasodium EDTA powder is hygroscopic. Store in original tightly sealed packaging and protect from moisture.
