1. Introduction
EDTA-4Na, also known as tetrasodium ethylenediaminetetraacetic acid, is an important complexing agent and metal masking agent, which can be used in textile industry dyeing, water treatment, color photosensitivity, medicine, daily chemicals, paper and other industries.
EDTA-4Na is named as Ethylene diamine tetraacetic acid tetrasodium
Physical data:
Synonyms: Tetrasodium EDTA; EDTA tetrasodium salt, Molecular formula C10H12N2O8Na4
CAS NO 64-02-8, EINECS 200-573-9
Organoleptic White powder, odorless
Assay ≥99.0%, Iron(Fe) ≤0.001%
Heavy Metals (Pb) ≤0.002%
Chelation value (mgCaCO3/g) ≥215
PH 10.5-11.5
2. Features
High chelation capacity
It binds stably to metal ions at a 1:1 molar ratio, especially at pH ≥8, which can soften calcium-containing hard water and inhibit oxidation reaction.
Broad-spectrum pH adaptability
It can maintain stable chelating activity in acidic to strongly alkaline (pH 4-12) environment, and is suitable for a wide range of applications.
High thermal stability
It does not decompose in superheated water and is resistant to high-temperature processes (e.g. polymerization reactions in the rubber industry).
High purity and safety
The purity of electronic grade products ≥ 99.99%, and the content of metal impurities is less than 1ppm, which is suitable for high-precision fields such as semiconductor cleaning.
Eco-friendly compatibility
The phosphorus-free formula reduces the risk of eutrophication in water bodies and complies with green industry standards
3. Function and application area
Water softening
Quickly remove calcium and magnesium ions in water, prevent scaling in boilers or pipes, and the softening efficiency is 30% higher than that of traditional phosphate.
Metal ion masking
In textile printing and dyeing, metal interference is eliminated, the color brightness of dyes is improved, and the color fastness is increased by 0.5 grades.
Antioxidant and antiseptic
In the food industry, chelated metal ions inhibit oxidation and extend shelf life, e.g. juice browning rate is reduced by 40%.
Detoxification and treatment In the field of medicine, the complex of heavy metals (lead, mercury) is used to promote the excretion and treatment of poisoning and calcified diseases
| Area | Detail |
|---|---|
| Water treatment | Industrial circulating water softener and RO film protector to reduce the risk of fouling. |
| Textile printing and dyeing | Dye additives to improve the whiteness and color uniformity of fabrics. |
| Medicine & Food | Heavy metal antidotes, food preservatives (infant formula additives) |
| Rubber industry | Styrene-butadiene rubber polymerization initiator to improve rubber elasticity and anti-aging performance. |
| Electronics Manufacturing | Semiconductor wafer cleaners to remove surface metal contaminants (e.g., Fe, Cu). |
| Daily chemical products | Shampoo and detergent additives to enhance detergency and prevent metal ion deposition. |
4. Package:
25kg/bag
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