Disodium ethylenediaminetetraacetate (EDTA-2Na) is a crucial chemical widely used as a potent chelating agent. It binds with various metal ions (such as calcium, iron, and copper), preventing them from causing food discoloration, spoilage, vitamin oxidation, and other issues. Consequently, it finds extensive application in food, pharmaceuticals, cosmetics, water treatment, detergents, and other fields. It functions as a stabilizer, antioxidant, and water softener. However, industrial-grade and food-grade products adhere to different standards and must be used appropriately.
| Chemical Name | Disodium Ethylene Diamine Tetraacetic |
| Chemical Formula | C10H14N2O8Na2 |
| CAS | 6381-92-6 |
| Appearance | White powder |
| Melting point | 248 ℃ |
| Boiling point | 614.2 ℃ |
| Density（ρ20）, g/cm³ | 1.77 g/cm³ |
| Molecular Weight | 336.206 |
| Solubility | Soluble in water |
Among the salts of ethylenediaminetetraacetic acid (EDTA), disodium salt is the most significant. It serves as a crucial chelating agent for complexing metal ions and separating metals. Additionally, it finds applications in detergents, liquid soaps, shampoos, agricultural chemical sprays, bleaching and fixing solutions for color photographic materials, water purifiers, pH adjusters, and coagulants. In redox initiation systems for styrene-butadiene rubber polymerization, disodium EDTA serves as a component of the activator, primarily complexing ferrous ions to regulate polymerization reaction rates. This product exhibits low toxicity, with an oral LD50 of 2000 mg/kg in rats. It functions as a chelating agent for metal ions.
Used for testing calcium, magnesium, etc. Applied in pharmaceutical manufacturing, color development, and rare metal smelting. An important chelating agent and metal masking agent.
Serves as an ammonium carboxylate complexing agent for determining calcium, magnesium, and other metals. Functions as a metal masking agent and color developer. Also employed in pharmaceutical production and rare metal smelting.
Also serves as an antioxidant synergist in cosmetics, functioning as a metal ion chelating agent with similar properties to EDTA but broader applicability. Suitable for cosmetic formulations containing trace metal ions and scenarios involving metal containers during production, storage, or transportation.
This product is packaged in plastic drums or double-walled drums with plastic liners. During transportation, take precautions against severe vibration, moisture, rain, and direct sunlight. Store in a dry, cool warehouse; avoid outdoor stacking. Keep away from heat sources and open flames; store in a cool place.
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