Product Information
Name EDTA Tetrasodium
CAS 64-02-8
Molecular Formula C₁₀H₁₂N₂Na₄O₈
Molecular Weight 380.17Synonym EDTA tetrasodium salt; Tetrasodium ethylenediaminetetraacetate
Appearance White crystalline powder
Chemphysical Properties
Solubility: Easily soluble in water, insoluble in ethanol and ether
pH (1% aqueous solution): 10.5 ~11.5
Chelating value: ≥220 mg CaCO₃/g
Stability: Stable under normal temperature, hygroscopic
Quality Specification
| Test Item | Standard |
|---|---|
| Assay (EDTA-4Na) | ≥99.0% |
| Heavy metals (Pb) | ≤0.001% |
| Iron (Fe) | ≤0.001% |
| Chloride | ≤0.01% |
| Sulphate | ≤0.05% |
| Loss on drying | ≤10.0% |
Application & Use
Water treatment: Scale inhibitor, metal ion sequestering agent for circulating water.
Detergent & personal care: Stabilizer in liquid soap, shampoo and cosmetics.
Textile industry: Remove metal impurities to improve dyeing quality.
Paper & pulp: Bleaching auxiliary agent.
Industrial cleaning, photography, agriculture additive.Packing Delivery & Storage
Packing: 25kg plastic woven bag with PE inner bag
Storage: Keep sealed in cool, dry and ventilated warehouse, away from moisture and strong oxidants.
Transport: Avoid heavy rain and package damage during transportation.
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