Ethylenediaminetetraacetic acid (EDTA, C₁₀H₁₆N₂O₈)
2,2′,2″,2‴-(Ethane-1,2-diyldinitrilo)tetraacetic acid
What is Ethylenediaminetetraacetic Acid (EDTA)?
Ethylenediaminetetraacetic Acid (EDTA, C₁₀H₁₆N₂O₈); Known as EDTA, it is a chelating agent found in white powder form. It is soluble in water and polar solvents and begins to decompose at 150–200 °C.
The most important feature of EDTA is its ability to bind (chelate) calcium, magnesium, iron, and other metal ions. Thanks to this feature, it is widely used in both industrial and medical applications.
EDTA and its derivatives (disodium EDTA, dipotassium EDTA) have a very wide range of applications, from food additives to pharmaceuticals, cleaning products, and cosmetics.
Ethylenediaminetetraacetic Acid (EDTA) Properties
| Feature | Value |
|---|---|
| Physical Appearance | White powder |
| Solubility | Soluble in water and polar solvents |
| Decomposition Temperature | 150–200 °C |
| Packaging Type: | Bag |
| Other Names | EDTA, Ethylenediaminetetraacetic Acid, E385 (Food Additive Code) |
In Which Industries Is Ethylenediaminetetraacetic Acid (EDTA) Used?
Ethylenediaminetetraacetic acid (EDTA) is a versatile chemical used in many industries. In some industries, EDTA’s applications include:
- Food industry: EDTA is used as a food additive to preserve the color, taste, smell, and nutritional value of food products.
- Cosmetics industry: EDTA can be used as a stabilizer in cosmetic products.
- Cleaning industry: EDTA is used in cleaning products to reduce water hardness and improve detergent performance.
- Pharmaceutical industry: EDTA is used to increase the stability and effectiveness of drugs.
- Textile industry: EDTA can be used as a mordant to help fix textile dyes.
- Agricultural industry: EDTA is used to increase the effectiveness of plant nutrients and pesticides.
In addition to these industries, EDTA can also be used in water treatment, the petroleum industry, metal processing, and other industries.
How is EDTA produced?
EDTA (Ethylenediaminetetraacetic acid) is an organic acid obtained as a result of the reaction between ethylenediamine (C2H8N2) and acetic acid (CH3COOH). The production process generally consists of the following steps:
Reaction Start: Ethylenediamine (EDA) and sodium hydroxide (NaOH) are combined to form sodium ethylenediaminetetraacetate (Na₂EDTA) salt.
Acidification: Sodium ethylenediaminetetraacetate is acidified using hydrochloric acid (HCl). As a result of this process, EDTA acid is formed.
Salt Formation: EDTA acid is then neutralized using sodium hydroxide or potassium hydroxide, yielding EDTA salt (disodium EDTA or dipotassium EDTA).
These processes are a general method used in the industrial-scale production of EDTA. However, the production process may vary, and different information may be obtained from different sources.