EDTA 2NA CAS 6381-92-6 Disodium edetate dihydrate

1. Industrial sector (with a high proportion)

Water treatment agent: Edta disodium salt dihydrate is one of the main uses. EDTA-2na is used in industrial circulating water, boiler water, swimming pool water, etc. By chelating Ca²⁺ and Mg²⁺ (hard water ions) in water, it prevents the formation of scale. At the same time, it chelates metal ions such as Fe³⁺ and Cu²⁺, preventing them from catalyzing the oxidation and deterioration of organic matter in water and reducing pipeline corrosion.

Metal processing: Edta-2na serves as a stabilizer for electroplating solutions (chelating metal ions to ensure uniform coating), a metal cleaner (removing oxides and scale from metal surfaces to prevent metal ions from interfering with cleaning effects), and a textile printing and dyeing assistant (chelating metal ions in water to prevent uneven dyeing of fabrics and a decline in color fastness).

Detergent/cleaning agent: edta disodium salt dihydrate is added to laundry powder, dishwashing liquid, and industrial cleaning agents as a "water softener" - chelating hard water ions in water to enhance the decontamination ability of detergents and prevent the formation of "soap scum" (such as insoluble calcium soap formed by soap and Ca²⁺).

2. Food Field (Compliant Additives)

Edta disodium salt dihydrate, as a food additive (permitted for use in Chinese GB 2760), functions as "stabilizer, antioxidant, metal chelating agent" :

For beverages (such as carbonated drinks and fruit juices) : Chelate metal ions like Fe³⁺ and Cu²⁺ to prevent them from catalyzing the oxidation and deterioration of vitamin C, thereby extending the shelf life.

For canned food and sauces: edta-2na inhibits the dissolution of Fe ions in metal containers (such as tinplate), preventing food from discoloring and altering its flavor.

For oils and fried foods: edta-2na chelates metal ions to prevent oxidation and rancidity of oils (resulting in a rancid taste).

Note: The dosage of food-grade EDTA disodium salt must be strictly controlled (usually ≤0.05-0.2g/kg, varying by food category), and its safety has been certified by the Codex Alimentarius Commission (CAC).

3. The medical field

Drug excipients: Edta-2na serves as a "stabilizer" for injections and oral liquids - chelating trace amounts of metal ions in the liquid medicine (such as Fe and Cu ions introduced during the production process), preventing metal ions from causing drug degradation (such as antibiotics and vitamin drugs), and ensuring the efficacy and safety of medication.

Heavy metal detosifier: EDTA-2NA is used to treat heavy metal poisoning (such as lead poisoning and mercury poisoning) - by intravenous injection of disodium EDTA, toxic metal ions such as Pb²⁺ and Hg²⁺ within its chelate form water-soluble complexes and are excreted through urine.

Dentistry/Cosmetics: Root canal irrigation fluid used in dentistry (chelating Ca²⁺ in dentin, softening dentin, and facilitating cleaning); As a "metal ion stabilizer" in cosmetics, it prevents metal ions from causing oxidation and discoloration of skin care products.

4. Other fields

Agriculture: Edta disodium salt dihydrate, as an additive for trace element fertilizers - chelates essential trace elements such as Fe, Zn, and Mn for plants, increases their solubility in the soil, and facilitates plant absorption (avoiding fixation by the soil).