Ethylenediaminetetraacetic Acid

• CAS No.: 60-00-4
• Appearance: Powder
• Usage: Water Treatment Chemicals, Rubber Auxiliary Agents
• Color: White
• pH: 2.8-3.0
• Molecular Formula: C10h16n2o8
• Model NO.: CAS NO.: 60-00-4
• Molecular Weight: M=292.24
• Content: 99% Min
• Trademark: Deborn
• Origin: China

Product Description

Ingredients: Ethylenediaminetetraacetic acid

Ethylenediaminetetraacetic acid (EDTA) is an aminopolycarboxylic acid with the formula [CH₂N(CH₂CO₂H)₂]₂. This white, water-soluble solid is widely used to bind to iron and calcium ions. It binds these ions as a hexadentate ("six-toothed") chelating agent. EDTA is produced as several salts, notably disodium EDTA, sodium calcium edetate, and tetrasodium EDTA.

Molecular formula: C10H16N2O8
Molecular weight: M=292.24
CAS NO.: 60-00-4
Chemical structural formula:
 
Technical index:
Appearance: white crystal powder
Content: ≥ 99.0%
Loss on drying: ≤ 0.2%
pH: 2.8-3.0
Solubility: 0.5 g/L (25 ºC) water.
Application: This product is mainly used as complexing agent reagent, dyeing auxiliary, additives of cosmetics, water treatment agent, rubber polymerization initiator, heat stabilizer of PVC, detergent and others.
 

In industry, EDTA is mainly used to sequester metal ions in aqueous solution. In the textile industry, it prevents metal ion impurities from modifying colours of dyed products. In the pulp and paper industry, EDTA inhibits the ability of metal ions, especially Mn²⁺, from catalysing the disproportionation of hydrogen peroxide, which is used in chlorine-free bleaching. In a similar manner, EDTA is added to some food as a preservative or stabiliser to prevent catalytic oxidative decolouration, which is catalysed by metal ions.^[5] In soft drinks containing ascorbic acid and sodium benzoate, EDTA mitigates formation of benzene (a carcinogen).^[6]

The reduction of water hardness in laundry applications and the dissolution of scale in boilers both rely on EDTA and related complexants to bind Ca²⁺, Mg²⁺, as well as other metal ions. Once bound to EDTA, these metal complexes are less likely to form precipitates or to interfere with the action of the soaps and detergents. For similar reasons, cleaning solutions often contain EDTA. In a similar manner EDTA is used in the cement industry for the determination of free lime and free magnesia in cement and clinkers