Disodium EDTA (Ethylenediaminetetraacetate) is a white crystalline powder with a melting point of approximately 240°C (with decomposition). It dissolves in water at room temperature (25°C) at a rate of 0.5 grams per liter but becomes up to 160 times more soluble in boiling water. It is insoluble in common organic solvents but soluble in alkaline solutions such as sodium hydroxide.

Properties and Function of Disodium EDTA

Disodium EDTA is known as a strong chelating agent with a high capacity to bind and neutralize metal ions such as calcium, magnesium, iron, lead, copper, and manganese. This property makes it highly effective in softening hard water and enhancing the performance of cleaning and hygiene products. By binding metal ions, it also prevents their negative effects on the appearance, stability, and functionality of products.

Advantages of Disodium EDTA

Easy and safe to transport and use

Enhances foaming and cleaning power in detergent formulations

Improves preservative effectiveness and extends the shelf life of cosmetic products

Neutralizes harmful metal ions in formulations

Applications of Disodium EDTA

Disodium EDTA has a wide range of applications across various industries, including

Detergent industry: As a water softener and surfactant booster

Textile industry: Used in dyeing and finishing processes

Cosmetic and personal care products: For formulation stabilization and performance improvement

Polymerization: As a reaction rate controller and heavy metal complexing agent

In specific processes such as styrene-butadiene rubber polymerization, disodium EDTA is used to control iron levels and regulate the reaction speed