Description
Chemical Name:N-(2-HYDROXYETHYL)ETHYLENEDIAMINE-N,N’,N’-TRIACETIC ACID TRISODIUM SALT
Cas No:139-89-9
Synonyms:HEDTA-NA3;HEDTA TRISODIUM SALT;
Molecular Weight:344.2
Molecular Forumula:C10H15N2Na3O7
Molecular Structure:
Specification:
Items | Specifications |
Melting point | 288 °C |
Boiling point | / |
Density | 1.285 g/cm3 |
Chloride(Cl)% | ≤ 0.01 |
Purity | 98% |
Water solubility | 480g/L at 20℃ |
LogP | -11.35 |
PH | 11 |
Sulfate | ≤ 0.05 |
Function:
Complexation: HEDTA-3Na molecules contain multiple coordination atoms and can form stable complexes with a variety of metal ions. Through coordination with metal ions, metal ions are wrapped inside the complex, thereby changing the chemical and physical properties of metal ions.
Stabilization: Based on its strong complexation ability, it can effectively reduce the activity of metal ions in the solution, inhibit the catalytic effect of metal ions on chemical reactions or the adverse effects on the stability of the system, and improve the stability of many chemical systems.
Buffering: It can regulate and stabilize the pH value of the solution to a certain extent, resist the drastic changes in pH caused by the addition of a small amount of acid or alkali, and maintain the acid-base balance of the system.
Application:
Detergent industry
Enhance decontamination ability: It can complex with metal ions in water to prevent metal ions from combining with active ingredients in detergents to form insoluble substances, thereby improving the decontamination effect of detergents in hard water and making clothes and other washed items cleaner.
Prevent stain redeposition: By complexing metal ions, it reduces the adsorption and fixation of metal ions on dirt, reduces the redeposition of dirt on the surface of clothing, and maintains the cleanliness and whiteness of clothing.
Textile printing and dyeing industry
Dyeing auxiliaries: In the textile dyeing process, it can complex with metal ions in water to avoid the influence of metal ions on dyes, so that dyes are evenly adsorbed on fibers, improve the uniformity and color brightness of dyeing, and reduce dyeing defects such as color spots and color flowers.
Fabric pretreatment: It is used in the pretreatment process of fabric desizing, scouring, etc., which can remove metal ion impurities on the surface of fabrics, improve the wettability and reactivity of fabrics, and create good conditions for subsequent dyeing and finishing processes.
