Tetrasodium EDTA
EDTA-4Na, Tetrasodium Ethylenediaminetetraacetate, Na4EDTA.
- CAS
- 64-02-8
- EC
- 200-573-9
- Sectors
- Water & Wastewater Treatment, Home Care & Industrial Cleaning, Textiles, Leather & Paper
Tetrasodium EDTA (CAS 64-02-8) is the tetrasodium salt of ethylenediaminetetraacetic acid, a white crystalline chelating agent supplied as a 99% pure powder or a 40% aqueous solution, used to sequester calcium and magnesium ions in water treatment, industrial cleaning and textile processing. This Technical Grade white crystalline solid is essential for preventing mineral precipitation in high-hardness water environments.
The product exhibits exceptional pH stability in alkaline conditions, making it the preferred sequestering agent for heavy-duty industrial cleaners. It enhances the efficiency of surfactants by removing metal interference, ensuring a high-performance Industrial Grade cleaning result.
Commonly supplied as a 99% pure powder or a 40% aqueous solution, it is highly soluble and chemically stable under diverse temperatures. It effectively prevents scale formation and protects equipment in boiler systems and cooling water circuits.
Typical Properties
| Molecular formula | C10H16N2O8.4Na |
|---|---|
| Molecular weight | 380.17 g/mol |
| Appearance | Tetrasodium EDTA is a white crystalline solid. |
| Form | Crystalline Powder |
| Color | White |
| Melting point | >300 °C |
| Density | Apparent density: 6.9 lb/gallon |
| GHS signal word | Danger · Corrosive, Irritant / harmful, Health hazard |
| HS code | 29224985 |
| Grades available | Technical Grade |
Typical literature values for identification; lot-specific results are stated on the certificate of analysis (COA) and the safety data sheet (SDS) that accompany every delivery.
Tetrasodium EDTA
Applications
- Detergent Manufacturing: Acts as a builder in laundry detergents to soften water and improve soil removal efficiency.
- Scale Inhibition: Used in industrial water treatment to prevent the build-up of calcium and magnesium deposits in piping.
- Textile Processing: Removes metal traces during the dyeing and bleaching process to ensure color uniformity and prevent spotting.
Safety & Risks
Classified as an Irritant. Causes serious eye irritation; wear Nitrile Gloves and Chemical Splash Goggles. Hazard Class: 8 (Corrosive to metals in some concentrations).
Packaging
25 kg PP Bags with PE liners, 1000 kg Jumbo Bags, or 250 kg Drums for liquid varieties.