Sodium Edetate CAS 64-02-8

Factory Supply Sodium Edetate CAS 64-02-8 with Best Price

  • Appearance: White powder
  • Purity: 99. 0%min
  • Stock: In stock
  • Sample: Available
  • Zhishang Chemical: Sodium Edetate Supplier & Manufacturer

Basic Info of Sodium Edetate

What is Sodium Edetate?

Ethylenediaminetetraacetic acid (EDTA) contains 4 carboxyl groups and can generally form di-salts, tri-salts and tetra-salts. Common EDTA salts are disodium EDTA (EDTA-2Na), tetrasodium EDTA-4Na, dipotassium EDTA-2K (EDTA-2K), and EDTA-3 Potassium (EDTA-3K). Tetrasodium ethylenediaminetetraacetate (EDTA-4Na) is a multifunctional organic small molecule containing amino and carboxyl groups, which is widely used in analytical chemistry as a complexing agent. It is widely available and inexpensive.

Tetrasodium EDTA has stable properties and is easily soluble in water. It is mainly used as stabilizer for cosmetics, chelating agent for pharmaceuticals, water softener, synthetic rubber catalyst, acrylic fiber polymerization terminator, printing and dyeing auxiliaries and washing auxiliaries. On top of that, EDTA-4Na can properly catalyze a collection of fragrant aldehydes, malononitriles and naphthols in a three-component one-pot response to create the matching chromene by-products. Its derivatives have antiviral, antitumor and other biological and also pharmacological tasks. It is widely used in your home and abroad. The application of EDTA-4Na in everyday chemical, electroplating, medication and various other fields has higher needs for its top quality.

Sodium Edetate Uses

  1. Tetrasodium EDTA is an important complexing representative as well as steel masking agent. It can be made use of for dyeing in fabric industry, water top quality treatment, color sensitization, medication, day-to-day chemical industry, papermaking as well as other markets, as additive, activator, water cleanser, metal ion covering up agent and also activator in styrene-butadiene rubber industry.
  2. In the dry-process acrylic sector, it can offset metal interference, enhance the color as well as brightness of dyed materials, and can also be utilized in liquid detergents to enhance cleaning high quality and also boost cleaning impact.
  3. Sodium edetate is utilized as ammonia carboxyl complexing agent, artificial rubber catalyst, and additionally used as water softener in fiber refining, whitening and also dyeing sectors.

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Preparation of Sodium Edetate

At present, the production of high-quality EDTA-4Na basically adopts the acidification of the reaction solution to obtain ethylenediaminetetraacetic acid (EDTA), and EDTA is then reacted with liquid alkali to obtain EDTA-4Na. This process requires a large amount of acid and alkali, and produces a large amount of High-salt waste water consumes a lot of energy and has an impact on the environment. Therefore, a high-quality EDTA-4Na production process with low material consumption and low energy consumption was studied.

Choice of process route
At present, the production processes of EDTA series products mainly include chloroacetic acid method, sodium cyanide method and hydrocyanic acid method, etc. None of these methods can directly meet the high quality requirements of EDTA-4Na and need further processing. If high-quality EDTA-4Na can be obtained directly from the EDTA-4Na in the reaction solution, it is of great significance in terms of resource and energy utilization. After analysis, it is believed that the solubility of EDTA-4Na is relatively large, and high-quality EDTA-4Na can be obtained directly from the reaction solution through two crystallizations. The amount of water used to treat the mother liquor is basically the same.

In the two crystallization purification processes, 2800kg of water needs to be concentrated per ton of product. The amount of concentrated water is large, and an efficient and energy-saving dehydration method is required. MVR is the abbreviation of mechanical vapor recompression technology (mechanical vapor recompression), which uses the secondary steam and its energy generated by the evaporation system itself to upgrade the low-grade steam into a high-grade steam heat source through the mechanical work of the compressor. Reducing the consumption of steam and cooling water in the concentration process has the characteristics of high efficiency, energy saving and low consumption, and the concentration cost is only 20% of the traditional triple-effect steaming.

Results and Discussion

The influence on high-quality EDTA-4Na is mainly manifested in impurities. The main factors affecting the precipitation of impurities are the solid-to-liquid ratio of the concentrated crystallization and the withdrawal amount of the mother liquor after concentration. Therefore, the solid-to-liquid ratio of EDTA-4Na and the withdrawal of the EDTA-4Na mother liquor of the primary and secondary concentrated crystallization were studied.

The process parameters for obtaining high-quality EDTA-4Na from the EDTA-4Na reaction solution through two crystallization methods were determined and verified in actual production. Using MVR technology to concentrate the crystallization, the solid-liquid ratio of the primary crystallization is controlled at 50%, and the amount of the primary mother liquor is 30%; the solid-liquid ratio of the secondary crystallization is controlled at 70%, the secondary mother liquor is 20%. The mother liquor enters the primary crystallization system, and under this production condition, high-quality EDTA-4Na that meets the requirements can be obtained. This method not only avoids the consumption of acid and alkali in the production process, but also uses MVR technology to reduce the energy consumption to 20% of the original, realizes the comprehensive utilization of resources and energy, and avoids the generation of EDTA-4Na by EDTA method. The batch process realizes the continuous and improves the automation level.


  1. Edetate sodium – PubChem
  2. Liang Dehui. Application and development of ethylenediaminetetraacetic acid [J]. Chemistry World. 1994(5): 234.

Sodium Edetate Supplier and Manufacturer

As a sodium edetate supplier and manufacturer with a strict standard product quality system certificate, Zhishang Chemical has long been providing the best sodium edetate raw materials to customers all over the world.

Over the years, relying on professional team experience and customer-centric team concept to meet customer needs in a timely manner, our company enjoys a high reputation in the world. At present, our company has served more than 6,000 customers and has established long-term cooperative relations with customers from many countries.

If you have a demand for sodium edetate and related products, please contact our service staff Zhishang Chemical – White directly, and we will provide you with high-quality products at the best price.

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