Ethylenediaminetetraacetic acid disodium salt

Product Details

CasNo： 139-33-3

MF： C10H14N2Na2O8

Appearance： powder

Delivery Time： 15 days

Packing： 25kg/bag

Purity： 99%

• Basic Information
  • Chemical Formula: C₁₀H₁₄N₂Na₂O₈
  • Molecular Weight: 336.21
  • CAS Registry Number: 139 - 33 - 3
  • Other Names: EDTA - 2Na, Disodium Edetate, etc.
• Physical and Chemical Properties
  • Appearance: White or off - white crystalline granule or powder
  • Melting Point: 248 °C (decomposition)
  • Density: 1.01 g/ml at 25℃
  • Solubility: Miscible with water, very slightly soluble in cold water, insoluble in alcohol and general organic solvents.
  • Stability: Stable under normal temperature, hygroscopic. It begins to volatilize crystal water at 100℃, loses crystal water to become anhydrous substance at 120℃, and will release toxic nitrogen oxides when heated and decomposed.
• Toxicity: Ethylenediaminetetraacetic acid disodium salt shows low acute toxicity. The LD50 (median lethal dose for rats) is 2.0g/kg to 2.2g/kg. It has a stimulating effect on human mucous membranes, upper respiratory tract, eyes and skin. It is harmful if swallowed and can cause serious eye irritation. According to the regulations of FAO/WHO (1985), ADI is 0 - 2.5g/kg.
• Preparation Method: It is usually prepared by the condensation of sodium chloroacetate and ethylenediamine, and then acidified to obtain ethylenediaminetetraacetic acid, which is neutralized with sodium hydroxide. The crude product can be dissolved in water, and then ethanol is added to precipitate the disodium salt, which is filtered, washed and dried to obtain the product.
• Application Fields
  • Food Field: It can be used in jam, vegetable puree, preserved fruits, pickled vegetables, vegetable cans, etc. as a stabilizer, antioxidant and preservative to prevent food from discoloring and deteriorating. The maximum usage varies according to different products, generally between 0.07g/kg and 0.25g/kg.
  • Chemical and Chemical Engineering Field: It can be used as a softener, detergent, antioxidant synergist for liquid soap and shampoo, etc., and can also be used as a cosmetic additive, disinfectant and a component of contact lens care solution. It can also be used as a polymerization activator for styrene - butadiene latex, a polymerization reaction terminator for acrylic fiber production, etc.
  • Environmental Treatment Engineering Field: It can be used as a water - treatment agent to complex and enrich metal ions in water. It can also be used for laboratory metal titration analysis to determine heavy metal elements such as lead and cadmium in plastics, and can also be used for the washing and repair of heavy - metal - contaminated soil.
  • Pharmaceutical Field: It is widely used as a chelating agent for various pharmaceutical preparations, such as gargles, ophthalmic preparations and topical preparations, etc., and can also be used as a stabilizer for various emulsions.
• Packaging and Storage: Usually, it is packed in 25 - kg packages, such as 25kg/bag or 25kg/drum. It should be stored in a cool and ventilated warehouse, away from fire and heat sources, and protected from moisture.