Tetrasodium EDTA, also known as EDTA-4Na or ethylenediaminetetraacetic acid tetrasodium salt, has molecular formula C10H12N2O8Na4⋅4H2O, molecular weight 452.23 and CAS number 13235-36-4.
Thanks to its powerful metal ion sequestering capacity, excellent water solubility, stable pH value and wide formulation compatibility, EDTA-4Na has become one of the indispensable functional core raw materials in daily chemicals, industrial cleaning, water treatment, textile printing and dyeing and papermaking industries.
Ⅰ. Core Indicators–Characteristics of EDTA-4Na
EDTA-4Na is white crystalline powder in appearance, easy to absorb moisture in humid environment and stable under conventional storage conditions.
We supply complete specifications including industrial grade, cosmetic grade and spray grade, with strict quality control on all technical indexes.
In terms of key quality indicators, the content of cosmetic grade EDTA-4Na reaches no less than 99.5%, with chloride ≤0.01%, sulfate ≤0.05%, heavy metal lead ≤0.001%, iron ion ≤0.001%, and NTA content strictly controlled below 0.1%, which meets high-standard daily chemical production requirements.
Industrial grade product has content ≥99.0% and NTA ≤1.0%, suitable for general industrial use. Its chelating value is stably above 220mg CaCO3/g, owning outstanding metal ion binding capacity.
The pH value of 1% aqueous solution is kept between 10.5 and 11.5, presenting stable natural alkalinity without extra pH adjustment in most formulas.
It owns multiple prominent core properties.
Firstly, it has ultra-high water solubility, dissolving fast in both cold and hot water, much better than EDTA disodium salt, convenient to prepare high-concentration solution and simplify production operation.
Secondly, it has strong chelating performance, which can stably combine with calcium, magnesium, iron, copper, manganese and other metal ions to form soluble complexes, effectively eliminate water hardness, inhibit scale formation and avoid raw material precipitation.
Thirdly, it has excellent thermal stability and good compatibility, which will not decompose under conventional production temperature, and can be perfectly compounded with surfactants, alkalis, plant extracts and other raw materials without adverse reactions.
Ⅱ. Diversified Application Scenarios of EDTA-4Na
1. Daily Chemical and Personal Care Products: Formula Stabilizer
EDTA-4Na is widely applied in alkaline facial cleansers, hair care products, hair straightening cream and various body cleaning products.
Relying on its excellent chelating property and high-purity low-impurity advantage, it can effectively capture metal impurities brought in by raw materials and production water, restrain oxidative failure of active ingredients, prevent finished products from yellowing, layering and producing peculiar smell, stabilize emulsion and paste system, and greatly extend the shelf life of daily chemical products.
Strictly controlled NTA and heavy metal content make it safe and reliable for long-term use in skin care formulas.
2.Industrial Cleaning Field: High-efficiency Detergent Builder
As an important functional auxiliary for heavy-duty degreaser, industrial alkaline cleaning agent, laundry detergent and tableware detergent, EDTA-4Na can weaken the negative influence of hard water quality, fully exert the decontamination and emulsification effect of surfactants, reduce soap scum generation, keep cleaning products clear and transparent, and effectively improve overall cleaning efficiency.
Stable alkalinity also helps enhance the oil removal ability of alkaline cleaning formulas.
3.Industrial Water Treatment: Water Softener and Scale Inhibitor
In circulating cooling water, boiler water and circulating pipeline water systems, EDTA-4Na with stable chelating index is used as professional water softener and scale inhibitor.
It removes calcium and magnesium hardness ions in water, prevents scale from adhering to the inner wall of equipment and pipelines, improves heat exchange efficiency, reduces equipment maintenance frequency and production cost, and also plays a certain slow-release anti-corrosion role on metal pipelines.
4.Textile Printing and Dyeing Industry: Color Fixing and Uniform Dyeing Auxiliary
During textile dyeing and finishing process, EDTA-4Na removes excess metal ions in dyeing water, effectively avoid dye fading, color difference and color spot problems caused by metal interference.
Improving dye adhesion and uniform dyeing effect, significantly enhance fabric color fastness, and steadily upgrade the overall printing and dyeing product quality.
5.Papermaking and Other Industrial Fields
In papermaking industry, it can protect hydrogen peroxide bleaching agent from being decomposed by metal ions, guarantee stable bleaching effect and improve paper whiteness.
Besides, it is also widely used in electroplating industry, environmental sewage detection, chemical raw material processing and other fields, playing an irreplaceable role as high-efficiency chelating auxiliary agent.
Ⅲ. Market Development Trends
With the continuous upgrading of daily chemical formula standards, stricter impurity control requirements for raw materials, and the continuous expansion of demand for environmentally friendly industrial water treatment technology, high-purity low-impurity EDTA-4Na is favored by more and more downstream manufacturers, and the market demand maintains steady growth with broad development space.
Unilong Industry specializes in the supply of fine chemical raw materials, and can stably provide industrial grade, cosmetic grade and spray grade EDTA-4Na with complete specifications.
Please feel free to contact us if you have any demand for EDTA-4NA in any time, thanks.
